Patent US3981092A successfully refreshed from Google Patents.
US3981092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide frame
Assignee: ALEX L CLARK Ltd
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Filing: 1974-05-21
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Granted: 1976-09-21
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Expires: 1994-05-21
Abstract
Abstract A mount for holding a photographic film transparency. The transparency is mounted on a pair of rail sections adhering to its edge portions. The rails are receivable in opposed slots in a frame whereby the transparency bridges a picture aperture in the frame. Stop means on the sides of the frame transverse to the slots prevents the transparency from sliding along the slots. Apparatus for adhering a strip of the transparencies to severable lengths of the rails comprises a channel to receive the strip and having grooves to receive the rails, and a roller movable along the channel with raised rings to run along the rails in the grooves.
Inventors
- 👤 Roy Ramsdale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:35
CPC Classifications
G; G03; G03D; G03D15/00; G03D15/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
109 words
A frame for use in mounting a photographic film transparency, comprising a mat having a picture aperture, means on one face of the mat forming a pair of opposed slots one in each of two first opposed sides of the aperture, the slots being open at each end thereof, and stop means carried by said one face of the mat on the second opposed sides of the aperture transverse to the slots, said stop means comprising a rib located on each of said second opposed sides of the aperture, each of the ribs lying parallel to the slots centrally therebetween and terminating adjacent the aperture to define a ledge.
Claim 2
Dependent Claim
109 words
A frame for use in mounting a photographic film transparency, comprising a mat having a picture aperture, means on one face of the mat forming a pair of opposed slots one in each of two first opposed sides of the aperture, the slots being open at each end thereof, and stop means carried by said one face of the mat on the second opposed sides of the aperture transverse to the slots, said stop means comprising a rib located on each of said second opposed sides of the aperture, each of the ribs lying parallel to the slots centrally therebetween and terminating adjacent the aperture to define a ledge.
Claim 3
Dependent Claim
153 words
A mount holding a photographic film transparency, comprising a frame having a mat with a picture aperture, means on one face of the mat to form a pair of opposed slots one on each of two sides of the aperture, the slots being open at each end thereof, stop means carried by said one face of the mat one on each of the opposed sides of the aperture transverse to the slots, each of said stop means comprising a rib lying parallel to the slots centrally therebetween and terminating adjacent the aperture to define a ledge, a frame element comprising a pair of parallel rails spaced apart and each having a face carrying a band of pressure sensitive adhesive, a pair of opposed edge portions of said transparency being adhered to the rails, the rails lying in the slots and the transparency bridging the aperture between the slots and between the stop means.
Claim 4
Dependent Claim
153 words
A mount holding a photographic film transparency, comprising a frame having a mat with a picture aperture, means on one face of the mat to form a pair of opposed slots one on each of two sides of the aperture, the slots being open at each end thereof, stop means carried by said one face of the mat one on each of the opposed sides of the aperture transverse to the slots, each of said stop means comprising a rib lying parallel to the slots centrally therebetween and terminating adjacent the aperture to define a ledge, a frame element comprising a pair of parallel rails spaced apart and each having a face carrying a band of pressure sensitive adhesive, a pair of opposed edge portions of said transparency being adhered to the rails, the rails lying in the slots and the transparency bridging the aperture between the slots and between the stop means.
References Cited (Backward Citations)
US2164655A
Cited
US2250583A
Cited
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Cited
FR1102106A
Cited
US2977017A
Cited
US3069795A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-21 | 1980-03-22 | 1980-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-21 | 1984-03-22 | 1984-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-21 | 1988-03-22 | 1988-09-21 | $7700.00 | Window Closed / Lapsed |