|Publication number||USRE38764 E1|
|Application number||US 08/780,878|
|Publication date||Jul 26, 2005|
|Filing date||Jan 9, 1997|
|Priority date||Oct 11, 1994|
|Also published as||CA2202269A1, CA2202269C, DE69531549D1, DE69531549T2, EP0786101A1, EP0786101A4, EP0786101B1, US5543864, WO1996011422A1|
|Publication number||08780878, 780878, US RE38764 E1, US RE38764E1, US-E1-RE38764, USRE38764 E1, USRE38764E1|
|Inventors||Richard Hirschman, Chul W. Shin|
|Original Assignee||Hudson Optical Corporation|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (15), Referenced by (3), Classifications (21), Legal Events (2)|
|External Links: USPTO, USPTO Assignment, Espacenet|
This is a continuing application of U.S. Ser. No. 08/320,447, filed Oct. 11, 1994 now U.S. Pat. No. 5,548,351.
1. Field of the Invention
The present invention relates to an improved method for mounting safety shields onto eyeglass temples and a kit for carrying out that method.
2. Description of the Related Art
Conventional safety spectacles include side safety shields which are removably affixed. However, the case often arises where the employers do not want the employees removing the safety shields.
In the situations where the employer prefers that the shields be permanently affixed the methods of attachment have been rivets, screws, lock-nuts or adhesives. Drilling the temples, which may be plastic or metal, and then securing the shield with a screw or rivet has various drawbacks. Cutting a hole through the temple weakens the temples and often the temples break during drilling.
Moreover, drilling the temples cannot be done on an “as needed” basis in the field, but must be done in an optical laboratory or where a drill press is readily available.
Affixing the shields by rivets or screws prevents manufacturers from designing safety spectacles having thinner and lighter temples. Employees are more likely to comply with eye protection requirements where the safety spectacles are more comfortable and fashionable.
The extra drilling operations increase labor costs and opportunity for injury to the optical laboratory worker.
Another disadvantage with drilling or riveting the shields to the temples is that removal is awkward, requiring extra tools. The temples are weakened or broken during removal of the shields. At the least, the temple is left with an unsightly unaesthetic hole.
U.S. Pat. No. 3,505,679 discloses a pair of safety spectacles having removable side shields. Flanges of the side shield are snapped over the temple of the glasses. This is disadvantageous, as repeated placement and removal of the shields weakens the shield's flanges, and eventually the flanges will snap and the entire side shield must be replaced. Moreover, an employee can easily remove the shields, even if the employer requires the shields to be worn.
U.S. Pat. No. 3,721,490 discloses side shields which are permanently fastened to a pair of eyeglasses without the use of screws or adhesives. However, the attachment means are formed integrally with the side shields. Thus, not only is removal difficult, but once the shields are removed, they are not designed to be used again.
U.S. Pat. No. 3,165,754 teaches separate means for removably attaching the shields to temples of a pair of glasses. The attachment means comprise a support member having hooks for engaging a lens frame and a pair of sidewardly extending support arms which contact the top and bottom surfaces of the hinge between the temples and lens frame. The attachment means must be connected to the eyeglass frame and temples by a screw. Thus, simple installation is not possible.
The present invention makes it possible to secure side shields to the temples of a pair of glasses in such a manner that the shields cannot easily be removed. In the preferred embodiment, the side shields are attached to the temples by a pin which “permanently” secures the side shields to the temple in the sense that the pin must be permanently deformed or broken (e.g., by cutting) in order to remove the side shields.
In accordance with the method of the present invention, a side shield is attached to the temple of an eyeglass frame by:
(a) placing the temple in a channel forming part of this side shield; and thereafter
(b) inserting a pin into both an opening formed in the side shield and into a slot formed in a member affixed to the temple to create a force fit between the temple, the channel and the pin which attaches the side shield to the temple.
In the preferred embodiment, the side shield is initially placed in its operative position before the pin is inserted into the opening and the force fit resulting from the insertion of the pin into the opening holds the side shield in the operative position.
The kit of the present invention comprises:
(a) a side shield having a longitudinally extending channel into which a longitudinally extending eyeglass temple may be inserted, said channel having an open lateral end through which said temple may be inserted and a supporting lateral wall against which said temple may be supported, said side shield further having an opening extending traverse to both said longitudinally extending channel and said supporting lateral wall;
(b) a pin adapted to be inserted into said opening so as to force said temple against said supporting lateral wall of said channel and to create a force fit between said side shield and said temple when said temple is located in said channel; and
(c) a member having a slot formed therein affixed to said temple to receive said pin and prevent said temple from freely moving longitudinally within the channel of said side shield.
For the purpose of illustrating the invention, there is shown in the drawing several forms which are presently preferred, it being understood, however, that the invention is not limited to the precise arrangements and instrumentalities shown.
Referring now to the drawings, wherein like numerals indicate like elements, there is shown in
The kit of the present invention makes it possible to add side shields to a standard eyeglass frame 15 on the job site. The kit includes a pair of side shields 12 and a pair of connecting pins 16 for coupling the side shields 12 to the temples 14. In the preferred embodiment, the side shields 12 wrap around the side and a portion of the top of the glasses 10.
A longitudinally extending channel 18 is formed in each side shield 12 as best shown in
Four detents 22 are formed in the open lateral end of channel 18 to temporarily hold the temple 14 within the channel 18 before the side shield 12 is “permanently” attached to the temple 14 by insertion of the pin 16 into the opening 20. Since the space between detents 22 is smaller than the height of the temple 14 (as best shown in FIG. 3), the temple is preferably inserted into the channel 18 in a position perpendicular to that illustrated in FIG. 3 and is then rotated into the position illustrated. Before the side shield 12 is “permanently” attached to the temple 14, it is placed in its operative position illustrated in FIG. 1. In this position, the front of eye shield 12 should be aligned with the front of the frame 15. Since the temple 14 fits loosely within the channel 18, the side shield 12 can easily be moved longitudinally along the temple 14 into the operative position. In the preferred embodiment, a lip 24 (
As best shown in
To assist in the insertion process, the distal end 32 of insertion leg 26 is formed with a bevel which prevents the end 32 from getting caught on the edge 34 (
In the preferred embodiment, the materials (preferably deformable plastic) of the side shield 12 and pin 16 as well as the size and shape of the channel 18 and insertion leg 26 are selected to ensure that the insertion leg 26 must be force fit into the opening 20 and will maintain a substantial force fit between the temple 14, the leg 26 and the supporting surfaces 40, 42 (
To improve the “permanent” nature of the coupling, the pin 16 is preferably performed with an angularly detent 44 which allows the pin 16 is be snap-fit to the opening 20 as the insertion leg 26 is inserted between the temple 14 and the surfaces 36, 38 of side shield 12. The beveled edge 45 of detent 44 permits the insertion leg 26 to be inserted fairly easily into the opening 20. Once the detent 45 has moved beyond the edge 46 of the side shield 12 (see FIG. 4). The top edge 47 of the bevel 44 snaps below the edge 46 and makes it difficult to remove the pin 16 from the opening 18.
While the pin of the preferred embodiment has a pair of legs 26, 28, it is the interaction between insertion leg 26, temple 14 and surfaces 36-42 which create the desired force fit connection. Accordingly, the leg 28 and cross bar 30 can be omitted if desired.
While the foregoing embodiment is satisfactory in most circumstances, it is possible for the wearer of the glasses to defeat the “permanent” nature of the connection by sliding the side shields 12 axially towards the rear of temple 14 as shown in FIG. 5. While the force fit created by the insertion of the pin into the opening will make it difficult to slide the side shields longitudinally along the temples 14, it is possible to do so with the use of significant force.
In most eyeglass frames, the height of the temples reduces towards the ear piece 48. As a result, when the side shield is moved into the position shown in phantom in
In order to reduce this possibility, it is often desirable to provide additional means for preventing longitudinal movement of the side shields 12 along the temples 14. Three structures for achieving this result are illustrated in
In the embodiment of
In the embodiment of
In the embodiment of
As the insertion leg 26 is moved into the hole 20 (the side shield 12 and its associated channel 18 are not shown in these figures), it is also inserted into the slot 62 of the member 60 and finally rests within the slot 62 as shown in FIG. 11. As a result, the temple 14 is not free to move longitudinally within the channel 18.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof and, accordingly, reference should be made to the appended claims, rather than to the foregoing specification, as indicating the scope of the invention.
|Cited Patent||Filing date||Publication date||Applicant||Title|
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|US2281129||Nov 9, 1939||Apr 28, 1942||Polaroid Corp||Ophthalmic mounting|
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|Citing Patent||Filing date||Publication date||Applicant||Title|
|US7043796 *||Feb 19, 2004||May 16, 2006||Robert Marc||Hinge connector assembly|
|US20050183237 *||Feb 19, 2004||Aug 25, 2005||Robert Marc||Hinge connector assembly|
|US20070090640 *||Oct 26, 2005||Apr 26, 2007||Riead Kenneth C||Project kit|
|U.S. Classification||351/47, 2/451, 351/44, 351/121, 2/449|
|International Classification||G02C11/00, G02C5/14, A61F9/02, G02C9/00, G02C7/16, G02C13/00|
|Cooperative Classification||G02C11/12, G02C5/146, G02C11/00, G02C7/16, G02C9/00|
|European Classification||G02C11/12, G02C5/14F, G02C11/00, G02C9/00, G02C7/16|
|Sep 21, 2001||AS||Assignment|
Owner name: HUDSON OPTICAL CORPORATION, NEVADA
Free format text: MERGER;ASSIGNOR:HUDSON OPTICAL CORPORATION;REEL/FRAME:012177/0544
Effective date: 20000920
|Jan 22, 2008||FPAY||Fee payment|
Year of fee payment: 12