US3753610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fresnel lens mounting
Assignee: BERNARD ASS Inc
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Filing: 1972-01-11
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Granted: 1973-08-21
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Expires: 1992-01-11
Abstract
Abstract A wire frame supports a plastic fresnel lens mounted thereon. The frame is bent in a plurality of stretches, enabling the lens to be supported on a table or other surface in different positions so that the work may be viewed from various angles for reading, handicraft, and other purposes. By suspending the frame by a cord from the neck, the lens may be used to magnify work held in the lap, etc.
Inventors
- 👤 B Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:17
CPC Classifications
G; G02; G02B; G02B25/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
182 words
A fresnel lens and mounting comprising a fresnel lens having at least two opposed straight lateral sides, a top side and a bottom side, a rigid unitary wire frame, said frame having on either side a frame side alongside one said straight lateral side of a length greater than the length of said lens straight lateral side, a first leg extending rearwardly of said lens at an angle of about 80* to said frame side, and below said bottom side of said lens, a second leg extending outwardly rearwardly relative to said first leg at an angle of about 120* and disposed behind said lens, and a third leg extending toward the back of said lens at an angle of about 120* relative to said second leg, a center bar for connecting the inner ends of said third legs together, said center bar being spaced apart from said lens and means on either side of said lens securing said straight sides and frame sides together so that said center bar, said third legs and said top side lie in a common plane.
Claim 2
Dependent Claim
182 words
A fresnel lens and mounting comprising a fresnel lens having at least two opposed straight lateral sides, a top side and a bottom side, a rigid unitary wire frame, said frame having on either side a frame side alongside one said straight lateral side of a length greater than the length of said lens straight lateral side, a first leg extending rearwardly of said lens at an angle of about 80* to said frame side, and below said bottom side of said lens, a second leg extending outwardly rearwardly relative to said first leg at an angle of about 120* and disposed behind said lens, and a third leg extending toward the back of said lens at an angle of about 120* relative to said second leg, a center bar for connecting the inner ends of said third legs together, said center bar being spaced apart from said lens and means on either side of said lens securing said straight sides and frame sides together so that said center bar, said third legs and said top side lie in a common plane.
Claim 3
Dependent Claim
25 words
A lens and mounting according to claim 1 which further comprises an oblique offset between the end of said frame side and said first leg.
Claim 4
Dependent Claim
42 words
A lens and mounting according to claim 1 in which the elements have lengths in approximately the following proportions: lens height, width 11 frame side 9 3/4 oblique offset 2 1/4 first leg 5 3/4 second leg 8 third leg 2 1/4
Claim 5
Dependent Claim
40 words
A lens and mounting according to claim 1 in which the elements have lengths in approximately the following proportions: lens height, width 8 frame side 8 1/4 oblique offset 2 first leg 6 second leg 6 third leg 2 1/4
Claim 6
Dependent Claim
23 words
A lens and mounting according to claim 2 in which said first leg is formed with a bend close to said oblique offset.
Claim 7
Dependent Claim
44 words
A lens and mounting according to claim 1 in which said securing means comprises a channel cross-section member, said frame side inside said channel, the margin of said straight side of said lens in said channel, and adhesive securing said channel to said margin.
Claim 8
Dependent Claim
41 words
A lens and mounting according to claim 2 which further comprises a cord attached at either end to said wire frame where said frame side and oblique offset intersect to suspend said frame from the neck with the lens substantially horizontal.
References Cited (Backward Citations)
US1588442A
Cited
US1892745A
Cited
US2122753A
Cited
US3418426A
Cited
FR1376852A
Cited
US3409347A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |