US3577811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for retensioning eyeglass frames
Assignee: Individual
•
Filing: 1968-12-12
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Granted: 1971-05-04
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Expires: 1988-12-12
Abstract
Abstract This invention has to do with a retensioning device for eyeglass frames and is adaptive for use on different sized frames. The retensioner employs a pressure lever pivoted centrally upon its base remote from the nosepiece of the glasses to permit the free end of the pressure lever to nest in the nosepiece curvature, and a tensioning assembly for manually imposing and maintaining for desired intervals an adjusted downward pressure on the nosepiece and frame.
Inventors
- 👤 Ambrose D Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:53
CPC Classifications
G; G02; G02C; G02C13/00; G02C13/001; B; B29; B29D; B29D12/00; B29D12/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
91 words
A frame retensioner for glasses comprising: a base having lateral supports for the outer or side extremities of the frames, a pressure lever pivoted centrally of the base remote from the nosepiece of the frames, said lever having a free end extended over said frames and adapted to nest in the curvature of the nosepiece, a manually adjustable tensioning assembly connected between the base and the pressure lever for (1) imposing and maintaining, via said lever, a pressure upon the nosepiece and frame elements and (2) for adjustably varying said pressure.
Claim 2
Dependent Claim
91 words
A frame retensioner for glasses comprising: a base having lateral supports for the outer or side extremities of the frames, a pressure lever pivoted centrally of the base remote from the nosepiece of the frames, said lever having a free end extended over said frames and adapted to nest in the curvature of the nosepiece, a manually adjustable tensioning assembly connected between the base and the pressure lever for (1) imposing and maintaining, via said lever, a pressure upon the nosepiece and frame elements and (2) for adjustably varying said pressure.
Claim 3
Dependent Claim
32 words
A frame retensioner for glasses as in claim 1, wherein the lateral supports include ledges inclined toward convergence to the pivoted end of said lever in order to accommodate different sized frames.
Claim 4
Dependent Claim
48 words
A frame retensioner as in claim 1, wherein said tensioning assembly comprises a rod pivoted in the base having an enlarged head, said head adapted to be moved along a camming surface formed in the pressure lever to impose adjusted variable pressures upon the nosepiece of the frames.
Claim 5
Dependent Claim
21 words
A frame retensioner as in claim 3, including means at the pivot of the rod for lengthening or shortening the rod.
Claim 6
Dependent Claim
47 words
A frame retensioner as in claim 3, wherein the pivoted rod extends through a longitudinal slot in the pressure lever permitting the lower surface of the head to move along the camming surface of the pressure lever for raising and lowering the free end of the lever.
Claim 7
Dependent Claim
22 words
A frame retensioner as in claim 3, including a compression spring surrounding the pivoted rod between the base and the pressure lever.
Claim 8
Dependent Claim
42 words
A frame retensioner as in claim 1, wherein said tensioning assembly comprises an adjustable rod threadably received in the base and having an enlarged head adapted to engage said pressure lever to impose adjusted variable pressures on the nosepiece of the frames.
Claim 9
Dependent Claim
21 words
A frame retensioner as in claim 7, including a compression spring surrounding said rod between the base and the pressure lever.
References Cited (Backward Citations)
US1444124A
Cited
US3269224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |