CA2436745A1 - Rocking chair with automatic locking device - Google Patents
Rocking chair with automatic locking device Download PDFInfo
- Publication number
- CA2436745A1 CA2436745A1 CA002436745A CA2436745A CA2436745A1 CA 2436745 A1 CA2436745 A1 CA 2436745A1 CA 002436745 A CA002436745 A CA 002436745A CA 2436745 A CA2436745 A CA 2436745A CA 2436745 A1 CA2436745 A1 CA 2436745A1
- Authority
- CA
- Canada
- Prior art keywords
- backrest
- locking mechanism
- frame assembly
- base
- assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/02—Rocking chairs
- A47C3/025—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
- A47C3/0255—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame pivotally mounted in the base frame, e.g. swings
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/02—Rocking chairs
- A47C3/03—Locking members
Abstract
A rocking chair comprising a base, a frame assembly rockably mounted to the base, and a seat assembly, including a backrest, mounted to the frame assembly is provided with a pair of biasing members, each mounted to both the frame assembly and the backrest for biasing the seat assembly from an unlocked position towards a locked position, and a locking mechanism mounted to both the seat assembly and the frame assembly so as to reciprocate between the locked position and an unlocked position; the locking mechanism allowing to selectively securing the frame assembly to the base in response to a backward movement of the backrest. The locking mechanism includes a toothed rack and an arm lever that operatively cooperate in response to a small force exerted on the backrest. The rocking chair is safe for people having hand or forearm disability problem and for people with reduced mobility.
Description
TITLE OF THE INVENTION
ROCKING CHAIR WITH AUTOMATIC LOCKING DEVICE
FIELD OF THE INVENTION
The present invention relates to rocking chairs. More specifically, the present invention is concerned with an automatic locking device for a locking chair.
BACKGROUND OF THE INVENTION
Rocking chairs provided with a locking mechanism for preventing rocking movements while a person attempts to rise from the chair or to sit thereon have been known since many years. Generally, the chair comprises a fixed base, a seat movably mounted to the base, and a locking mechanism mounting to the chair for selectively immobilizing the seat relatively to the base.
Locking mechanism comes in two flavours: manually operated and automatic. Examples of rocking chairs equipped with a manually operated locking mechanism are described in the United States Patent No. 6,120,094, issued to Parent on September 19, 2000 and entitled "Rocking Chair With Automatic Locking Device", and in the United States Patent No. 6,213,551, entitled "Chair Locking Mechanism", issued to Desnoyers et al. on April 10, 2001.
ROCKING CHAIR WITH AUTOMATIC LOCKING DEVICE
FIELD OF THE INVENTION
The present invention relates to rocking chairs. More specifically, the present invention is concerned with an automatic locking device for a locking chair.
BACKGROUND OF THE INVENTION
Rocking chairs provided with a locking mechanism for preventing rocking movements while a person attempts to rise from the chair or to sit thereon have been known since many years. Generally, the chair comprises a fixed base, a seat movably mounted to the base, and a locking mechanism mounting to the chair for selectively immobilizing the seat relatively to the base.
Locking mechanism comes in two flavours: manually operated and automatic. Examples of rocking chairs equipped with a manually operated locking mechanism are described in the United States Patent No. 6,120,094, issued to Parent on September 19, 2000 and entitled "Rocking Chair With Automatic Locking Device", and in the United States Patent No. 6,213,551, entitled "Chair Locking Mechanism", issued to Desnoyers et al. on April 10, 2001.
A drawback of such rocking chairs is that the lever of the locking mechanism may be difficult to operate for people having hand or forearm disability problem and for people with reduced mobility.
Bouchard et al. in the United States Patent No. 6,406,095, issued on June 18, 2002 and entitled "Self-Locking Mechanism" propose a solution to the above-mentioned drawback in the form of a locking mechanism intended to be automatically actuated while the occupant is still assuming a normal sitting position. The proposed locking mechanism comprises a detector for establishing whether a person is sitting on the chair, a lock, and an actuator for unlocking the lock when the presence of a person on the chair has been detected. The detector is responsive to pressure onto the backrest of the chair.
A first drawback of Bouchard's self-locking mechanism is the important number of its components and its complexity, yielding a mechanism bound to malfunction and an overall chair expensive to manufacture. A second drawback is that Bouchard's self-locking mechanism is uncomfortable and difficult to operate.
OBJECTS OF THE INVENTION
An object of the present invention is therefore to provide an improved locking mechanism for a rocking chair.
Bouchard et al. in the United States Patent No. 6,406,095, issued on June 18, 2002 and entitled "Self-Locking Mechanism" propose a solution to the above-mentioned drawback in the form of a locking mechanism intended to be automatically actuated while the occupant is still assuming a normal sitting position. The proposed locking mechanism comprises a detector for establishing whether a person is sitting on the chair, a lock, and an actuator for unlocking the lock when the presence of a person on the chair has been detected. The detector is responsive to pressure onto the backrest of the chair.
A first drawback of Bouchard's self-locking mechanism is the important number of its components and its complexity, yielding a mechanism bound to malfunction and an overall chair expensive to manufacture. A second drawback is that Bouchard's self-locking mechanism is uncomfortable and difficult to operate.
OBJECTS OF THE INVENTION
An object of the present invention is therefore to provide an improved locking mechanism for a rocking chair.
BRIEF DESCRIPTION OF THE DRAWINGS
In the appended drawings:
Figure 1 is a side elevation view of a rocking chair according to an illustrative embodiment of the present invention;
Figure 2 is a cross section of the rocking chair from Figure 1;
Figure 3 is a cross section taken along line 3-3 on Figure 1, illustrating a biasing member according to an embodiment of the present invention, the biasing member being illustrated in a passive position;
Figure 4 is a cross section similar to Figure 3 illustrating the biasing member in a working position; and Figure 5 is a cross section similar to Figure 2, illustrating the rocking chair in an operating position.
DETAILED DESCRIPTION OF THE INVENTION
Turning now to Figures 1 and 2 of the appended drawings, a rocking chair 10 provided with an automatic locking mechanism 12 according to an illustrative embodiment of the present invention is illustrated.
The rocking chair 10 comprises a fixed base 14, a frame assembly 16 rockably mounted to the base 14, a seat assembly 18 mounted to the frame assembly 16, a pair of biasing members 20 (only one shown), each mounted to both the frame assembly 16 and the seat assembly 18, an automatic locking mechanism 12, and a safety locking mechanism 21.
The base 14 includes bottom and top rectangular frames 22-24, the top frame 22 being biased from the bottom frame 24 and supported by the rods 26. The base 14 and more specifically the bottom rectangular frames 22 are configured and sized so as to provide stability to the chair 10.
The frame assembly 16 includes two S-shape members 28 (only one shown), each rockably mounted to a side of the rectangular base 14 via two elongated mounting members 30. The S-shape members 28 are in the form of bended hollow tubing.
More specifically, a first longitudinal end of each mounting member 30 is pivotally mounted to the bottom leg of an S-shape member near a longitudinal end thereof, while the other longitudinal end of the mounting member 30 is pivotally mounted to a beam of the top rectangular frame 22 near a longitudinal end thereof so as to allow a rocking movement between the S-shape member 28 and the frame assembly 14.
The S-shape members 28 are mounted to opposite sides of the bottom and top rectangular frames 22-24. Each mounting member 30 is secured near the respective corners of the rectangular frames 22-24 so as to improve stability.
Each S-shape member 28 includes reinforced rods 32 and 34 between respectively the top and bottom leg portions and the center portion of the S-shape member 28.
The seat assembly 18 is mounted to the frame assembly 16 as will be explained hereinbelow in more detail. The seat assembly 18 includes a backrest 34 and a seat 36.
The backrest 34 of the seat assembly 18 is pivotally secured to both S-shape members 28 of the frame assembly 16 therebetween via the biasing members 20 (only one shown) and via the locking mechanism 12. The operating relationship between the backrest 34 and the S-shape members 28 via the locking mechanism 12 will be described hereinbelow in more detail. The seat 36 is mounted to the S-shape member 28 via mounting elements such as the mounting bracket 72.
Turning now to Figure 3, one of the two identical biasing members 20 and its operating relationship with a corresponding S-shape member 28 will be described in more detail.
The biasing member 20 is in the form of an elongated hollow body 38 including first and second longitudinal end openings 40-42 and a spring 44 extending therein from the first to the second longitudinal opening 40-42. The two end rings 46'-46 of the spring 44 located respectively at the proximate and distal ends thereof are bent so as to be oriented perpendicularly from the other rings and perpendicularly from one another. The spring 44 is configured and sized so that the two end rings 46-46' extend partially from their respective opening when the spring 44 is in its normal configuration. The end ring 46' is secured to the hollow body 38 near the second longitudinal end 42 via a first pin 48. The end ring 46 is secured to the hollow tubing of the S-shape member 28 therein via a second pin 50. The hollow body 38 is tapered near its distal end 40 so as to ease its longitudinal forward movement in the upper leg section of the S-shape member 28 when it is mounted therein during assembly.
A first transversal opening 52 in the hollow body 38 allows to receive a bolt 54 that is secured to the hollow body 38 via a complementary nut 56. The bolt 54 is fixedly mounted to a mounting plate 58 that is part of a mounting assembly 60 allowing to fixedly secure the hollow body 38 to the backrest 34. Of course, the S-shape member 28 includes an opening 61 configured and sized to allow passage for the bolt 54 and to allow a transversal course therein.
The mounting assembly 60 further includes a bolt 62 or any other fastening means for securing the mounting plate 58 to the tubular member of the backrest 34.
Of course, other fastening means can be used to secure the backrest 34 to the hollow body 38 and therefore to. the S-shape member 28 since the hollow body 38 is mounted in the S-shape member 28.
In operation, the biasing member 20 is in its passive position illustrated in Figure 3 when no pressure is exerted on the backrest 34 (see Figure 1 ). However, when a pressure is exerted on the backrest 34, the backward translation of the backrest 34 is transferred to the biasing member 20 via the mounting assembly 60 until the bolt 54 reach the end of its course as allowed by the opening 61 (see Figure 4). The biasing member 20 is then in a working position. The spring 44 is so configured that only a minimal pressure is required to move the backrest 34.
Returning to Figure 1, the safety locking mechanism 21 is in the form of two friction members 64 (only one shown) pivotally mounted to the upper end portion 66 of the S-shaped member 28 via a rod 68. The two friction members 64 are positioned along the rod 68 so as to engage lateral frame members 70 of the backrest 34 while pivoting. A handle 72, fixedly mounted to both friction members 64, allows pivoting the friction members 64 between a first position where they contact the backrest 34 and a second position (as illustrated in Figures 1, 3 and 4), where it is sufficiently biased from the backrest to allow the hollow body 38 of the biasing member 20 to move its full course. In their first contacting position, the friction members 64 prevent any backward movement. Moreover, as will become more apparent hereinbelow, the safety locking mechanism 21, while in its first position, prevents the rocking chair 10 from rocking.
The locking mechanism 12 will now be described in more detail with reference to Figures 1, 2 and 5.
The locking mechanism 12 includes a pair of toothed racks 74 and a pair of lever arms 76.
Each lever arm 76 includes an elongated portion 78 and an integral shorter portion 80 extending from the elongated portion 78 at an obtuse angle so as to generally define a L-shape body. Each arm 76 is pivotally mounted through its center portion to a respective lateral side of the seat 36 via a pivot pin 82. The free end 84 of the shorter portion of each arm 36 is provided with a groove 85 to receive a first transversal rod 86 extending from side to side of the chair 10 in the backrest 34. The free end 88 of the elongated portion 78 includes an aperture 89 to pivotally mount the arm 76 to a second transversal rod 90 that is secured to both S-Shape member 28 therebetween.
The toothed racks 74 are mounted to each other via third and fourth transversal rods 92-93 that are positioned near each of their respective first and second longitudinal ends 94-96. A mounting bracket 98 allows to additionally pivotally mount the fourth transversal rod 93 to the bottom of the seat 36. The arm 36 further includes a finger 100 extending from the arm 76 so as to define a groove 102 for receiving the second transversal rod 90 that acts as a second pivot axis for the arm 76.
The finger 100 extends from the arm 76 at a position about one third of a distance between the third and fourth transversal rod 92-93. Of course, the position of the finger may vary.
Each arm 76 also includes a toothed portion 104 defined by a plurality of grooves106 defining an arc. The grooves 106 are configured to selectively engage a small rod 108 protruding from the top rectangular frame 22 of the base 14 towards the interior of the base 14.
In operation, a person (not shown) unlock the safety locking mechanism 21 by upwardly pivoting the handle 72 so as to disengage the resilient bodies from the back of the lateral frame members 70 of the backrest 34, as illustrated in Figure 1. Of course, the safety locking mechanism 21 is not required to be engaged between uses of the chair 10.
When the safety locking mechanism 21 is unlocked and a person sitting in the chair 10 exerts a minimal pressure onto the backrest 34, the backrest 34 pivot backwardly as indicated by arrow 110. Without any pressure exerted on the backrest 34, the biasing member 20 (see Figure 3) forces the backrest 34 in the locked position illustrated in Figures 1 and 2. In this lock position, the toothed rack 74 and lever arm 76 are so positioned that one of the grooves 106 engages the rod 108, which prevent any relative movements between the base 14, from which the rod 108 protrudes. The longitudinal position of the toothed rack 74 relatively to the base 14 when a person wishes to get up from the chair 10 and therefore stops putting some pressure with its back on the backrest, determines which groove 106 engages the rod 108. Of course the number, size and configuration of the grooves 106, and the configuration and size of the rod 108 may vary.
The pivoting of the backrest 34 caused by exerting a pressure thereon causes the pivoting of the lever arm 76 in a way that its elongated portion 78 raises. Consequently, this causes the raising of the toothed portion 104 of the toothed rack 74 (see arrow 112 on Figure 5), disengaging any engaged groove from the rod 108. This allows the S
shaped members 28, and therefore the seat assembly 18 mounted thereon, to freely swing in both longitudinal directions as indicated by arrows 114 in Figure 5.
It is to be noted that the automatic locking mechanism 12 according to the present invention makes use of the lever effect, allowing the mechanism 12 to be disengage by persons having a weight as low as 40 kilograms.
Although the present invention has been described with 5 reference to a rocking chair provided with a frame assembly including S-shape members, it is believed to be within the reach of a person having skills in the art to adapt the present invention to a rocking chair having other configuration and more specifically other frame assembly configuration.
Moreover, the configuration of the lever arm and toothed rack may vary. Also other cooperating means than grooves with a rod can be foreseen between the rack and the base. The biasing member can also take many forms.
Although the present invention has been described hereinabove by way of preferred embodiments thereof, it can be modified without departing from the spirit and nature of the subject invention, as defined in the appended claims.
In the appended drawings:
Figure 1 is a side elevation view of a rocking chair according to an illustrative embodiment of the present invention;
Figure 2 is a cross section of the rocking chair from Figure 1;
Figure 3 is a cross section taken along line 3-3 on Figure 1, illustrating a biasing member according to an embodiment of the present invention, the biasing member being illustrated in a passive position;
Figure 4 is a cross section similar to Figure 3 illustrating the biasing member in a working position; and Figure 5 is a cross section similar to Figure 2, illustrating the rocking chair in an operating position.
DETAILED DESCRIPTION OF THE INVENTION
Turning now to Figures 1 and 2 of the appended drawings, a rocking chair 10 provided with an automatic locking mechanism 12 according to an illustrative embodiment of the present invention is illustrated.
The rocking chair 10 comprises a fixed base 14, a frame assembly 16 rockably mounted to the base 14, a seat assembly 18 mounted to the frame assembly 16, a pair of biasing members 20 (only one shown), each mounted to both the frame assembly 16 and the seat assembly 18, an automatic locking mechanism 12, and a safety locking mechanism 21.
The base 14 includes bottom and top rectangular frames 22-24, the top frame 22 being biased from the bottom frame 24 and supported by the rods 26. The base 14 and more specifically the bottom rectangular frames 22 are configured and sized so as to provide stability to the chair 10.
The frame assembly 16 includes two S-shape members 28 (only one shown), each rockably mounted to a side of the rectangular base 14 via two elongated mounting members 30. The S-shape members 28 are in the form of bended hollow tubing.
More specifically, a first longitudinal end of each mounting member 30 is pivotally mounted to the bottom leg of an S-shape member near a longitudinal end thereof, while the other longitudinal end of the mounting member 30 is pivotally mounted to a beam of the top rectangular frame 22 near a longitudinal end thereof so as to allow a rocking movement between the S-shape member 28 and the frame assembly 14.
The S-shape members 28 are mounted to opposite sides of the bottom and top rectangular frames 22-24. Each mounting member 30 is secured near the respective corners of the rectangular frames 22-24 so as to improve stability.
Each S-shape member 28 includes reinforced rods 32 and 34 between respectively the top and bottom leg portions and the center portion of the S-shape member 28.
The seat assembly 18 is mounted to the frame assembly 16 as will be explained hereinbelow in more detail. The seat assembly 18 includes a backrest 34 and a seat 36.
The backrest 34 of the seat assembly 18 is pivotally secured to both S-shape members 28 of the frame assembly 16 therebetween via the biasing members 20 (only one shown) and via the locking mechanism 12. The operating relationship between the backrest 34 and the S-shape members 28 via the locking mechanism 12 will be described hereinbelow in more detail. The seat 36 is mounted to the S-shape member 28 via mounting elements such as the mounting bracket 72.
Turning now to Figure 3, one of the two identical biasing members 20 and its operating relationship with a corresponding S-shape member 28 will be described in more detail.
The biasing member 20 is in the form of an elongated hollow body 38 including first and second longitudinal end openings 40-42 and a spring 44 extending therein from the first to the second longitudinal opening 40-42. The two end rings 46'-46 of the spring 44 located respectively at the proximate and distal ends thereof are bent so as to be oriented perpendicularly from the other rings and perpendicularly from one another. The spring 44 is configured and sized so that the two end rings 46-46' extend partially from their respective opening when the spring 44 is in its normal configuration. The end ring 46' is secured to the hollow body 38 near the second longitudinal end 42 via a first pin 48. The end ring 46 is secured to the hollow tubing of the S-shape member 28 therein via a second pin 50. The hollow body 38 is tapered near its distal end 40 so as to ease its longitudinal forward movement in the upper leg section of the S-shape member 28 when it is mounted therein during assembly.
A first transversal opening 52 in the hollow body 38 allows to receive a bolt 54 that is secured to the hollow body 38 via a complementary nut 56. The bolt 54 is fixedly mounted to a mounting plate 58 that is part of a mounting assembly 60 allowing to fixedly secure the hollow body 38 to the backrest 34. Of course, the S-shape member 28 includes an opening 61 configured and sized to allow passage for the bolt 54 and to allow a transversal course therein.
The mounting assembly 60 further includes a bolt 62 or any other fastening means for securing the mounting plate 58 to the tubular member of the backrest 34.
Of course, other fastening means can be used to secure the backrest 34 to the hollow body 38 and therefore to. the S-shape member 28 since the hollow body 38 is mounted in the S-shape member 28.
In operation, the biasing member 20 is in its passive position illustrated in Figure 3 when no pressure is exerted on the backrest 34 (see Figure 1 ). However, when a pressure is exerted on the backrest 34, the backward translation of the backrest 34 is transferred to the biasing member 20 via the mounting assembly 60 until the bolt 54 reach the end of its course as allowed by the opening 61 (see Figure 4). The biasing member 20 is then in a working position. The spring 44 is so configured that only a minimal pressure is required to move the backrest 34.
Returning to Figure 1, the safety locking mechanism 21 is in the form of two friction members 64 (only one shown) pivotally mounted to the upper end portion 66 of the S-shaped member 28 via a rod 68. The two friction members 64 are positioned along the rod 68 so as to engage lateral frame members 70 of the backrest 34 while pivoting. A handle 72, fixedly mounted to both friction members 64, allows pivoting the friction members 64 between a first position where they contact the backrest 34 and a second position (as illustrated in Figures 1, 3 and 4), where it is sufficiently biased from the backrest to allow the hollow body 38 of the biasing member 20 to move its full course. In their first contacting position, the friction members 64 prevent any backward movement. Moreover, as will become more apparent hereinbelow, the safety locking mechanism 21, while in its first position, prevents the rocking chair 10 from rocking.
The locking mechanism 12 will now be described in more detail with reference to Figures 1, 2 and 5.
The locking mechanism 12 includes a pair of toothed racks 74 and a pair of lever arms 76.
Each lever arm 76 includes an elongated portion 78 and an integral shorter portion 80 extending from the elongated portion 78 at an obtuse angle so as to generally define a L-shape body. Each arm 76 is pivotally mounted through its center portion to a respective lateral side of the seat 36 via a pivot pin 82. The free end 84 of the shorter portion of each arm 36 is provided with a groove 85 to receive a first transversal rod 86 extending from side to side of the chair 10 in the backrest 34. The free end 88 of the elongated portion 78 includes an aperture 89 to pivotally mount the arm 76 to a second transversal rod 90 that is secured to both S-Shape member 28 therebetween.
The toothed racks 74 are mounted to each other via third and fourth transversal rods 92-93 that are positioned near each of their respective first and second longitudinal ends 94-96. A mounting bracket 98 allows to additionally pivotally mount the fourth transversal rod 93 to the bottom of the seat 36. The arm 36 further includes a finger 100 extending from the arm 76 so as to define a groove 102 for receiving the second transversal rod 90 that acts as a second pivot axis for the arm 76.
The finger 100 extends from the arm 76 at a position about one third of a distance between the third and fourth transversal rod 92-93. Of course, the position of the finger may vary.
Each arm 76 also includes a toothed portion 104 defined by a plurality of grooves106 defining an arc. The grooves 106 are configured to selectively engage a small rod 108 protruding from the top rectangular frame 22 of the base 14 towards the interior of the base 14.
In operation, a person (not shown) unlock the safety locking mechanism 21 by upwardly pivoting the handle 72 so as to disengage the resilient bodies from the back of the lateral frame members 70 of the backrest 34, as illustrated in Figure 1. Of course, the safety locking mechanism 21 is not required to be engaged between uses of the chair 10.
When the safety locking mechanism 21 is unlocked and a person sitting in the chair 10 exerts a minimal pressure onto the backrest 34, the backrest 34 pivot backwardly as indicated by arrow 110. Without any pressure exerted on the backrest 34, the biasing member 20 (see Figure 3) forces the backrest 34 in the locked position illustrated in Figures 1 and 2. In this lock position, the toothed rack 74 and lever arm 76 are so positioned that one of the grooves 106 engages the rod 108, which prevent any relative movements between the base 14, from which the rod 108 protrudes. The longitudinal position of the toothed rack 74 relatively to the base 14 when a person wishes to get up from the chair 10 and therefore stops putting some pressure with its back on the backrest, determines which groove 106 engages the rod 108. Of course the number, size and configuration of the grooves 106, and the configuration and size of the rod 108 may vary.
The pivoting of the backrest 34 caused by exerting a pressure thereon causes the pivoting of the lever arm 76 in a way that its elongated portion 78 raises. Consequently, this causes the raising of the toothed portion 104 of the toothed rack 74 (see arrow 112 on Figure 5), disengaging any engaged groove from the rod 108. This allows the S
shaped members 28, and therefore the seat assembly 18 mounted thereon, to freely swing in both longitudinal directions as indicated by arrows 114 in Figure 5.
It is to be noted that the automatic locking mechanism 12 according to the present invention makes use of the lever effect, allowing the mechanism 12 to be disengage by persons having a weight as low as 40 kilograms.
Although the present invention has been described with 5 reference to a rocking chair provided with a frame assembly including S-shape members, it is believed to be within the reach of a person having skills in the art to adapt the present invention to a rocking chair having other configuration and more specifically other frame assembly configuration.
Moreover, the configuration of the lever arm and toothed rack may vary. Also other cooperating means than grooves with a rod can be foreseen between the rack and the base. The biasing member can also take many forms.
Although the present invention has been described hereinabove by way of preferred embodiments thereof, it can be modified without departing from the spirit and nature of the subject invention, as defined in the appended claims.
Claims
1. A rocking chair comprising:
a base;
a frame assembly rockably mounted to the base;
a seat assembly, including a backrest, mounted to the frame assembly;
a pair of biasing members, each mounted to both said frame assembly and said backrest for biasing the seat assembly from an unlocked position towards a locked position; and a locking mechanism mounted to both said seat assembly and said frame assembly so as to reciprocate between said locked position and an unlocked position; said locking mechanism allowing to selectively securing said frame assembly to said base in response to a backward movement of said backrest.
a base;
a frame assembly rockably mounted to the base;
a seat assembly, including a backrest, mounted to the frame assembly;
a pair of biasing members, each mounted to both said frame assembly and said backrest for biasing the seat assembly from an unlocked position towards a locked position; and a locking mechanism mounted to both said seat assembly and said frame assembly so as to reciprocate between said locked position and an unlocked position; said locking mechanism allowing to selectively securing said frame assembly to said base in response to a backward movement of said backrest.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002436745A CA2436745A1 (en) | 2003-08-07 | 2003-08-07 | Rocking chair with automatic locking device |
| CA002475047A CA2475047A1 (en) | 2003-08-07 | 2004-07-19 | Rocking chair with automatic locking mechanism |
| US10/896,205 US6997510B2 (en) | 2003-08-07 | 2004-07-21 | Rocking chair with automatic locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002436745A CA2436745A1 (en) | 2003-08-07 | 2003-08-07 | Rocking chair with automatic locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2436745A1 true CA2436745A1 (en) | 2005-02-07 |
Family
ID=34120699
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002436745A Abandoned CA2436745A1 (en) | 2003-08-07 | 2003-08-07 | Rocking chair with automatic locking device |
| CA002475047A Abandoned CA2475047A1 (en) | 2003-08-07 | 2004-07-19 | Rocking chair with automatic locking mechanism |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002475047A Abandoned CA2475047A1 (en) | 2003-08-07 | 2004-07-19 | Rocking chair with automatic locking mechanism |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US6997510B2 (en) |
| CA (2) | CA2436745A1 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6612651B1 (en) * | 1998-10-14 | 2003-09-02 | Motion Technology, Llc | Linkage mechanism for a motion chair |
| CA2482133C (en) * | 2004-09-14 | 2010-01-05 | Broda Enterprises Inc. | Glider chair with self-locking mechanism |
| CA2524986A1 (en) * | 2005-10-31 | 2007-04-30 | Shermag Inc. | A locking device for a rocking chair |
| CA2688893A1 (en) * | 2009-12-18 | 2011-06-18 | Groupe Dutailier Inc. | Locking system for rocking chair |
| EP2533670B1 (en) * | 2010-02-11 | 2016-08-10 | Rodney Philip Pallot | Weight activated device |
| TWM394748U (en) * | 2010-07-28 | 2010-12-21 | chang-zhen Lin | Rocking chair |
| AU2011253535A1 (en) | 2010-12-08 | 2012-06-28 | Broda Enterprises, Inc. | Modular chair |
| TWM405807U (en) * | 2010-12-17 | 2011-06-21 | chang-zhen Lin | rocking chair |
| IL221179A (en) | 2012-07-30 | 2017-02-28 | Aminach Bedding & Furniture Mfg Ltd | Rocking chair apparatus |
| GB2511031A (en) * | 2012-12-22 | 2014-08-27 | Roger Hollest | A rocking chair |
| TW201722318A (en) * | 2015-12-30 | 2017-07-01 | Hern Juei Co Ltd | Quick combination chair comprising two stands, two connecting rods and two plate bodies |
| US20210153656A1 (en) * | 2019-11-27 | 2021-05-27 | Wyldly, LLC | Folding chair |
| CA3098957A1 (en) * | 2019-12-13 | 2021-06-13 | Lpa Medical Inc. | Self-stopping mobile chair system |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4438973A (en) | 1981-08-04 | 1984-03-27 | La-Z-Boy Chair Company | Swivel chair with brake |
| US5203433A (en) | 1991-12-16 | 1993-04-20 | Dugas Grady A | Automatic braking wheelchair |
| US6213551B1 (en) | 1998-04-07 | 2001-04-10 | Dutailier International Inc. | Chair locking mechanism |
| US6244658B1 (en) | 1999-04-02 | 2001-06-12 | Veranda Jardin R.P. Inc. | Rocking chair with automatic unidirectional locking device |
| US6120094A (en) | 1999-04-02 | 2000-09-19 | Parent; Real | Rocking chair with automatic locking device |
| CA2323398C (en) | 1999-10-22 | 2004-04-27 | Lpa Medical Inc. | Self-locking chair |
| CA2296032A1 (en) | 2000-01-13 | 2001-07-13 | Dutailier International Inc. | Locking assembly for a rocking chair |
| US6464295B1 (en) | 2000-11-15 | 2002-10-15 | Shermag Inc. | Safe locking assembly for a glider rocker |
| US6588841B1 (en) * | 2002-05-01 | 2003-07-08 | Ultra-Mek, Inc. | Gliding seating unit with locking unit |
-
2003
- 2003-08-07 CA CA002436745A patent/CA2436745A1/en not_active Abandoned
-
2004
- 2004-07-19 CA CA002475047A patent/CA2475047A1/en not_active Abandoned
- 2004-07-21 US US10/896,205 patent/US6997510B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US20050062322A1 (en) | 2005-03-24 |
| US6997510B2 (en) | 2006-02-14 |
| CA2475047A1 (en) | 2005-02-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6688437B2 (en) | Wheelchair brake system with anti-rollback and anti-tip capabilities | |
| US6213554B1 (en) | Lift chair | |
| US6264007B1 (en) | Automatic locking system for wheelchairs | |
| US6244658B1 (en) | Rocking chair with automatic unidirectional locking device | |
| CA2436745A1 (en) | Rocking chair with automatic locking device | |
| US7334840B2 (en) | Glider chair with self-locking mechanism | |
| AU2003261081A1 (en) | Dynamically balanced seat assembly | |
| CA2601470A1 (en) | A height adjustable wheelchair | |
| US20070278761A1 (en) | Wheelchair with elevating seat | |
| KR950007778B1 (en) | Carriage for children | |
| US20070007807A1 (en) | Seat having cushion height and recline adjustment mechanisms | |
| US4787673A (en) | Chair support with adjustment device | |
| CA1316807C (en) | Shiftable carriage mechanism for incliner chair | |
| WO2005044051A1 (en) | Dynamic seating system for personal mobility vehicle | |
| CA2481988A1 (en) | Rocking wheelchair | |
| US5800009A (en) | Hands-free recliner | |
| WO2019049401A1 (en) | Chair for nursing care | |
| US5605376A (en) | Method for inclining a chair seat, and chair having an inclinable seat | |
| US4852849A (en) | Lifting seats | |
| CN115177113A (en) | Seat support and seat unit | |
| US11166553B2 (en) | Tilting chair | |
| AU2019240604B2 (en) | A Seat | |
| JP4759128B2 (en) | Seat front / rear position adjustment device | |
| US11122899B2 (en) | Seat for users with postural care requirements | |
| JPH0337063A (en) | Reclining backrest assembly for wheelchair |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |