CA2624797A1 - Rocker spring assembly - Google Patents
Rocker spring assembly Download PDFInfo
- Publication number
- CA2624797A1 CA2624797A1 CA002624797A CA2624797A CA2624797A1 CA 2624797 A1 CA2624797 A1 CA 2624797A1 CA 002624797 A CA002624797 A CA 002624797A CA 2624797 A CA2624797 A CA 2624797A CA 2624797 A1 CA2624797 A1 CA 2624797A1
- Authority
- CA
- Canada
- Prior art keywords
- brackets
- bracket
- rocking
- base
- spring 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.)
- Granted
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
- A47C3/021—Rocking chairs having elastic frames
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
- F16F1/12—Attachments or mountings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
- F16F1/12—Attachments or mountings
- F16F1/128—Attachments or mountings with motion-limiting means, e.g. with a full-length guide element or ball joint connections; with protective outer cover
Abstract
A furniture member such as a rocking chair includes a chair frame operable for rocking motion relative to a stationary base. The chair frame and stationary base are coupled together by a rocker spring assembly positioned on each side of the frame/base. The rocker spring assembly includes upper and lower brackets and a single coiled spring connected to both brackets. A displacement limiting device is positioned within an inner cavity of the coiled spring to limit the rocking movement of the chair frame.
Claims (26)
1. A rocker spring assembly for a rocking furniture member, comprising:
a first bracket;
a second bracket arranged in opposed relationship to the first bracket;
a single coil spring connected between the first and second brackets, the coil spring including an open inner cavity; and a single displacement limiting device disposed through the inner cavity of the coil spring, the displacement limiting device including:
a shaft having opposed ends; and a bulbous head created at each of the opposed ends;
wherein the shaft is movably received within an aperture in each of the first and second brackets, the displacement limiting device being operable to limit a total displacement between the first and second brackets when the bulbous heads contact the first and second brackets.
a first bracket;
a second bracket arranged in opposed relationship to the first bracket;
a single coil spring connected between the first and second brackets, the coil spring including an open inner cavity; and a single displacement limiting device disposed through the inner cavity of the coil spring, the displacement limiting device including:
a shaft having opposed ends; and a bulbous head created at each of the opposed ends;
wherein the shaft is movably received within an aperture in each of the first and second brackets, the displacement limiting device being operable to limit a total displacement between the first and second brackets when the bulbous heads contact the first and second brackets.
2. The rocker spring assembly of Claim 1, wherein each of the first and second brackets further comprise a first bracket portion and a second bracket portion, the second bracket portion operable to connectably receive the coil spring.
3. The rocker spring assembly of Claim 2, further comprising a hook-shaped member extending from the second bracket portion and engageable with the coil spring.
4. A rocker spring assembly for a rocking furniture member, comprising:
a first bracket;
a second bracket arranged in opposed relationship to the first bracket;
a biasing element connected between the first and second brackets, the biasing element including an open inner cavity;
each of the first and second brackets further include a first bracket portion and a second bracket portion, the second bracket portion operable to connectably receive the biasing element;
a displacement limiting device disposed through the inner cavity of the biasing element, the displacement limiting device including:
a shaft having opposed ends; and a bulbous head created at each of the opposed ends;
a hook-shaped member extending from the second bracket portion and engageable with the biasing element; and at least one raised element created on the second bracket portion and oriented with respect to the hook-shaped member to positively engage the biasing element between the hook-shaped member and the raised element;
wherein the shaft is movably received within an aperture in each of the first and second brackets, the displacement limiting device being operable to limit a total displacement between the first and second brackets when the bulbous heads contact the first and second brackets.
a first bracket;
a second bracket arranged in opposed relationship to the first bracket;
a biasing element connected between the first and second brackets, the biasing element including an open inner cavity;
each of the first and second brackets further include a first bracket portion and a second bracket portion, the second bracket portion operable to connectably receive the biasing element;
a displacement limiting device disposed through the inner cavity of the biasing element, the displacement limiting device including:
a shaft having opposed ends; and a bulbous head created at each of the opposed ends;
a hook-shaped member extending from the second bracket portion and engageable with the biasing element; and at least one raised element created on the second bracket portion and oriented with respect to the hook-shaped member to positively engage the biasing element between the hook-shaped member and the raised element;
wherein the shaft is movably received within an aperture in each of the first and second brackets, the displacement limiting device being operable to limit a total displacement between the first and second brackets when the bulbous heads contact the first and second brackets.
5. The rocker spring assembly of Claim 1, wherein each of the first and second brackets further comprise a plurality of alignment apertures.
6. The rocker spring assembly of Claim 1, wherein the second bracket comprises a duplicate of the first bracket.
7. The rocker spring assembly of Claim 1, wherein the coil spring is reversibly positionable between the first and second brackets.
8. The rocker spring assembly of Claim 1, wherein a longitudinal axis of the displacement limiting device is offset from a coil spring longitudinal axis.
9. A rocking furniture member, comprising:
a base;
a chair frame supported on the base for rocking movement relative to the base, the chair frame including first and second side members;
a first rocker spring assembly directly coupling the first side member and the base;
a second rocker spring assembly directly coupling the second side member and the base;
each of the first and second rocker spring assemblies including:
a first bracket secured to the chair frame;
a second bracket secured to the base; and a single coil spring disposed between and secured to the upper and lower brackets for biasing the chair frame in an upright, neutral position and for enabling a furniture member occupant to rock forwardly and rearwardly.
a base;
a chair frame supported on the base for rocking movement relative to the base, the chair frame including first and second side members;
a first rocker spring assembly directly coupling the first side member and the base;
a second rocker spring assembly directly coupling the second side member and the base;
each of the first and second rocker spring assemblies including:
a first bracket secured to the chair frame;
a second bracket secured to the base; and a single coil spring disposed between and secured to the upper and lower brackets for biasing the chair frame in an upright, neutral position and for enabling a furniture member occupant to rock forwardly and rearwardly.
10. The rocking furniture member of Claim 9, further comprising a limit device disposed through an inner cavity of the coil spring.
11. The rocking furniture member of Claim 10, wherein the limit device further comprises:
a shaft portion; and a stop member disposed at each end of the shaft portion;
wherein the first and second brackets each include an aperture formed therethrough for receiving the shaft portion of the limit device, the stop members being engagable with the first and second brackets to define a range of rocking movement of the furniture member.
a shaft portion; and a stop member disposed at each end of the shaft portion;
wherein the first and second brackets each include an aperture formed therethrough for receiving the shaft portion of the limit device, the stop members being engagable with the first and second brackets to define a range of rocking movement of the furniture member.
12. canceled
13. The rocking furniture member of claim 10, comprising a predetermined length of the limit device selectable to limit a total displacement of the coil spring.
14. The rocking furniture member of claim 10, comprising a position of the limit device within the inner cavity operable to divide the range of rocking movement substantially equally between a forward and a backward rocking movement.
15. The rocking furniture member of claim 10, comprising a position of the limit device within the inner cavity operable to unequally divide the range of rocking movement between a forward and a backward rocking movement.
16. The rocking furniture member of claim 11, comprising a size of the aperture formed in the first and second brackets operable to allow the first bracket to freely rotate and translate relative to the second bracket as the furniture member is rocked within the range of rocking movement.
17. A rocking/reclining chair, comprising:
a base;
a chair frame supported on the base for rocking movement relative to the base;
a rocker spring assembly coupling the base and the chair frame, the rocker spring assembly including:
a first bracket secured to the chair frame;
a second bracket secured to the base;
a single coil spring disposed between and secured to the first and second brackets for biasing the chair frame in an upright, neutral position and for enabling an occupant to rock forwardly and rearwardly; and a limit member disposed between the first and second brackets and within a cavity of the single coil spring, the limit member having a shaft portion and a stop member disposed at each end of the shaft portion, the limit member being operable to limit a total displacement of the rocker spring assembly;
and a leg rest assembly disposed within and suspended from the chair frame, the leg rest assembly positionable between a retracted position and an extended position.
a base;
a chair frame supported on the base for rocking movement relative to the base;
a rocker spring assembly coupling the base and the chair frame, the rocker spring assembly including:
a first bracket secured to the chair frame;
a second bracket secured to the base;
a single coil spring disposed between and secured to the first and second brackets for biasing the chair frame in an upright, neutral position and for enabling an occupant to rock forwardly and rearwardly; and a limit member disposed between the first and second brackets and within a cavity of the single coil spring, the limit member having a shaft portion and a stop member disposed at each end of the shaft portion, the limit member being operable to limit a total displacement of the rocker spring assembly;
and a leg rest assembly disposed within and suspended from the chair frame, the leg rest assembly positionable between a retracted position and an extended position.
18. The rocking/reclining chair of Claim 17, further comprising an aperture formed through the first and second brackets for receiving the shaft portion of the limit member, the stop members being engagable with the first and second brackets to define a range of rocking movement.
19. The rocking chair of claim 18, wherein the apertures created in the first and second brackets are sized to allow the first bracket to freely rotate and translate relative to the second bracket as the chair is rocked within the range of rocking movement.
20. canceled
21. A method for controlling a rocking motion of a rocking chair, the chair having a base, a chair frame supported from the base and a rocker spring assembly connecting the base to the chair frame, the rocker spring assembly having first and second brackets, the method comprising:
interconnecting the first and second brackets with a single coil spring to bias the chair frame in an upright, neutral position and to enable a seat occupant to rock forwardly and rearwardly;
slidably interposing a displacement limiting device between the first and second brackets and within a cavity of the single coil spring; and creating radially extending opposed ends of the displacement limiting device engageable with the upper and lower brackets operable to limit a range of rocking movement of the rocking chair.
interconnecting the first and second brackets with a single coil spring to bias the chair frame in an upright, neutral position and to enable a seat occupant to rock forwardly and rearwardly;
slidably interposing a displacement limiting device between the first and second brackets and within a cavity of the single coil spring; and creating radially extending opposed ends of the displacement limiting device engageable with the upper and lower brackets operable to limit a range of rocking movement of the rocking chair.
22. The method of Claim 21, further comprising creating apertures in both the first and second brackets to movably receive the displacement limiting device.
23. The method of Claim 21, further comprising:
attaching the first bracket of the rocker spring assembly to the chair frame; and connecting the second bracket of the rocker spring assembly to the base.
attaching the first bracket of the rocker spring assembly to the chair frame; and connecting the second bracket of the rocker spring assembly to the base.
24. The method of Claim 21, further comprising extending a hook-shaped element from the rocker spring assembly operable to mechanically engage the single coil spring.
25. A method for controlling a rocking motion of a rocking chair, the chair having a base, a chair frame supported from the base and a rocker spring assembly connecting the base to the chair frame, the rocker spring assembly having first and second brackets, the first bracket having a first plurality of fastener receiving apertures and the second bracket having a second plurality of fastener receiving apertures, the method comprising:
interconnecting the first and second brackets with a single coil spring to bias the chair frame in an upright, neutral position and to enable a seat occupant to rock forwardly and rearwardly;
slidably interposing a displacement limiting device between the first and second brackets and within a cavity of the single coil spring; and varying a preload of the single coil spring by changing a relative position between the first and second sets of fastener receiving apertures.
interconnecting the first and second brackets with a single coil spring to bias the chair frame in an upright, neutral position and to enable a seat occupant to rock forwardly and rearwardly;
slidably interposing a displacement limiting device between the first and second brackets and within a cavity of the single coil spring; and varying a preload of the single coil spring by changing a relative position between the first and second sets of fastener receiving apertures.
26. The method of Claim 25, further comprising creating radially extending opposed ends of the displacement limiting device engageable with the upper and lower brackets and operable to limit a range of rocking movement of the rocking chair.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/243,085 | 2005-10-04 | ||
US11/243,085 US7275789B2 (en) | 2005-10-04 | 2005-10-04 | Rocker spring assembly |
PCT/US2006/038366 WO2007044288A2 (en) | 2005-10-04 | 2006-10-02 | Rocker spring assembly |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2624797A1 true CA2624797A1 (en) | 2007-04-19 |
CA2624797C CA2624797C (en) | 2010-08-03 |
Family
ID=37943305
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2624797A Active CA2624797C (en) | 2005-10-04 | 2006-10-02 | Rocker spring assembly |
Country Status (8)
Country | Link |
---|---|
US (1) | US7275789B2 (en) |
CN (1) | CN101287393B (en) |
AU (1) | AU2006302644B2 (en) |
CA (1) | CA2624797C (en) |
GB (1) | GB2443380B (en) |
HK (1) | HK1115284A1 (en) |
NZ (1) | NZ566841A (en) |
WO (1) | WO2007044288A2 (en) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7597397B2 (en) * | 2007-09-28 | 2009-10-06 | Target Brands, Inc. | Swivel rocker assembly |
US8657375B2 (en) | 2010-04-13 | 2014-02-25 | La-Z-Boy Incorporated | Resilient rocking element for furniture member |
CN102001444B (en) * | 2010-11-19 | 2014-06-11 | 陕西飞机工业(集团)有限公司 | Neutral position adjustment device of flight control system and neutral position setting method thereof |
JP5800147B2 (en) * | 2011-11-16 | 2015-10-28 | ポップリベット・ファスナー株式会社 | Spring restraint clip |
IL221179A (en) * | 2012-07-30 | 2017-02-28 | Aminach Bedding & Furniture Mfg Ltd | Rocking chair apparatus |
US9314101B2 (en) | 2013-03-01 | 2016-04-19 | La-Z-Boy Incorporated | Restricted rocker spring assembly |
US9332844B2 (en) * | 2014-10-08 | 2016-05-10 | Aminach Bedding & Furniture Manufacturing Ltd. | Electrically controlled recliner with independent rocker-limiting mechanism |
JP6463200B2 (en) * | 2015-03-31 | 2019-01-30 | Kyb株式会社 | Spring guide and suspension device |
US10092106B2 (en) | 2015-07-14 | 2018-10-09 | La-Z-Boy Incorporated | Recliner and legrest mechanism for a furniture member |
US10890235B2 (en) * | 2015-08-14 | 2021-01-12 | L&P Property Management Company | Furniture lock out system |
CN105853134A (en) * | 2016-04-19 | 2016-08-17 | 浙江恒林椅业股份有限公司 | Massage chair |
US9986835B2 (en) | 2016-09-22 | 2018-06-05 | La-Z-Boy Incorporated | Furniture member having cam tilt mechanism |
US10568428B2 (en) | 2017-04-07 | 2020-02-25 | La-Z-Boy Incorporated | Furniture member having flexible seatback |
US10537178B2 (en) | 2017-04-07 | 2020-01-21 | La-Z-Boy Incorporated | Furniture member having flexible seatback |
CN107668997A (en) * | 2017-11-20 | 2018-02-09 | 江西服装学院 | A kind of Relaxing chair |
US10524575B2 (en) | 2018-04-16 | 2020-01-07 | La-Z-Boy Incorporated | Furniture member with foldable pawl and ratchet assembly |
US10820708B2 (en) | 2018-05-18 | 2020-11-03 | La-Z-Boy Incorporated | Furniture member with wall-proximity mechanism and locking trigger |
US10524574B2 (en) | 2018-05-18 | 2020-01-07 | La-Z-Boy Incorporated | Furniture member with powered wall-proximity mechanism |
CN108741826B (en) * | 2018-06-08 | 2021-11-05 | 杰克布斯·弗里德里克·唐纳德 | Rocking chair, modular component for use in rocking chair and part for use in modular component |
US11134778B2 (en) | 2019-05-09 | 2021-10-05 | La-Z-Boy Incorporated | Reclining chaise |
US11197549B1 (en) | 2020-09-28 | 2021-12-14 | La-Z-Boy Incorporated | Wall-proximity furniture member having sync mechanism |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US203602A (en) * | 1878-05-14 | Improvement in rocking-chairs | ||
US488911A (en) * | 1892-12-27 | George weber | ||
US3042448A (en) * | 1957-10-21 | 1962-07-03 | Hamilton Cosco Inc | Chair |
US3295885A (en) * | 1965-04-20 | 1967-01-03 | Bruner T Barksdale | Rockable reclining chair construction |
US3677535A (en) * | 1970-08-24 | 1972-07-18 | Lord Corp | Axial suspension system that accommodate relative lateral movement |
US4367895A (en) * | 1980-05-29 | 1983-01-11 | La-Z-Boy Chair Company | Reclinable chair |
US4437701A (en) * | 1981-10-13 | 1984-03-20 | The Lane Company | Rocker-blocking device for rocking chair having projectable/rectractable footrest |
US4810032A (en) * | 1988-05-10 | 1989-03-07 | John Gibson | Stabilized spring holder |
US5121966A (en) * | 1990-10-23 | 1992-06-16 | Tischler Ludwig J | Adjustable recliner chair |
US5104181A (en) * | 1990-12-10 | 1992-04-14 | Best Chairs, Inc. | Contour lounger with floor-contacting landing gear |
US5301413A (en) * | 1991-10-11 | 1994-04-12 | La-Z-Boy Chair Co. | Modular reclining chair and method of making |
US5171000A (en) * | 1991-03-08 | 1992-12-15 | La-Z-Boy Chair Company | Adjustable rocker spring apparatus |
SE500084C2 (en) * | 1992-07-06 | 1994-04-11 | Trelleborg Ind Ab | Resilient, power transferring spring element |
US5370442A (en) * | 1993-05-27 | 1994-12-06 | La-Z-Boy Chair Co. | Rocker block |
US5582459A (en) * | 1993-09-30 | 1996-12-10 | Itoki Crebio Corporation | Chair having tiltable seat back |
US5567009A (en) * | 1994-10-13 | 1996-10-22 | La-Z-Boy Chair Company | Rocking/reclining chair having limit means and noise suppression means |
DE19608860C2 (en) * | 1996-03-07 | 2000-06-29 | Joern Gmbh | Compression spring |
US5738409A (en) * | 1997-01-08 | 1998-04-14 | Bursik; Thomas A. | Rocking chair construction |
GB2340746B (en) * | 1998-07-27 | 2002-02-13 | Ashfield Eng Co Wexford Ltd | A chair |
US7201367B2 (en) * | 2002-12-12 | 2007-04-10 | Caterpillar Inc | Load-bearing resilient mount |
JP4271992B2 (en) * | 2003-05-26 | 2009-06-03 | 株式会社東洋工芸 | Chair locking device |
-
2005
- 2005-10-04 US US11/243,085 patent/US7275789B2/en active Active
-
2006
- 2006-10-02 CN CN2006800368568A patent/CN101287393B/en active Active
- 2006-10-02 CA CA2624797A patent/CA2624797C/en active Active
- 2006-10-02 WO PCT/US2006/038366 patent/WO2007044288A2/en active Application Filing
- 2006-10-02 NZ NZ566841A patent/NZ566841A/en not_active IP Right Cessation
- 2006-10-02 AU AU2006302644A patent/AU2006302644B2/en not_active Ceased
-
2008
- 2008-03-06 GB GB0804132A patent/GB2443380B/en not_active Expired - Fee Related
- 2008-07-30 HK HK08108421.4A patent/HK1115284A1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CA2624797C (en) | 2010-08-03 |
WO2007044288B1 (en) | 2007-08-23 |
US7275789B2 (en) | 2007-10-02 |
NZ566841A (en) | 2010-06-25 |
CN101287393B (en) | 2010-10-06 |
CN101287393A (en) | 2008-10-15 |
WO2007044288A3 (en) | 2007-07-12 |
HK1115284A1 (en) | 2008-11-28 |
AU2006302644A1 (en) | 2007-04-19 |
GB2443380B (en) | 2010-07-21 |
AU2006302644B2 (en) | 2011-09-22 |
US20070085395A1 (en) | 2007-04-19 |
WO2007044288A2 (en) | 2007-04-19 |
GB0804132D0 (en) | 2008-04-09 |
GB2443380A (en) | 2008-04-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2624797A1 (en) | Rocker spring assembly | |
EP2878229B1 (en) | Powered rocker and glider recliner linkage mechanisms | |
US7708346B2 (en) | Reclining back mechanism for a seating unit | |
US8398165B2 (en) | Powered rocker recliner linkage mechanism | |
EP2685868B1 (en) | Seating unit with a linkage mechanism | |
US10610022B2 (en) | Headrest tilt mechanism | |
US7641277B2 (en) | Zero-wall clearance linkage mechanism for a high-leg seating unit | |
WO2007056166A3 (en) | Seat assembly with movable seat and backrest and method | |
NZ560244A (en) | Adjustable toggle and stop for a furniture mechanism | |
US7806477B2 (en) | Furniture member lumbar support system | |
US20100148558A1 (en) | Linear recliner assembly with threaded linear drive rod and rotatably engaged gear stop | |
WO2005115200A1 (en) | Spring toggle furniture mechanism | |
EP2358239A2 (en) | Lumbar support system for furniture member | |
US6896323B2 (en) | Actuation mechanism for reclining chair | |
CN108601455A (en) | Adjustable waist support device for ornament furnishings | |
CN208784124U (en) | Headrest electric adjusting mechanism for angle | |
US7503624B2 (en) | Press-back style reclining chair with actuating unit for moving backrest between positions | |
CN214341193U (en) | Wood rocking chair with adjustable backrest angle | |
TWM465834U (en) | Sliding type chair | |
KR100958911B1 (en) | Chair height and tilting adjustment apparatus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request |