Patent US4833493A successfully refreshed from Google Patents.
US4833493A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet film holder
Assignee: Individual
•
Filing: 1987-03-09
•
Granted: 1989-05-23
•
Expires: 2007-03-09
Abstract
Abstract A sheet film holder with means to expose a portion of the unused film edge to a logo, copyright notice or other desired media. The top and bottom rear portions of a dual sheet holder are hingedly connected to the rear wall. The central portion of the bottom arm and the connecting member of the side channel are made of light conducting material. An opaque acetate with clear media is secured to the bottom side of the material portion of the arm. When film is in the frame and a slide is secured in position within the rear channel, the film remains unexposed, except for the light which is conducted via the material, through the clear portion of the acetate and to the film edge. This desired media will appear on the film when it is developed.
Inventors
- 👤 Jon Lamar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:30
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/28; G03B17/32
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
132 words
An improved sheet film holder to provide a desire media exposure for a sheet of film, comprising: (a) sheet film holder means having front, side and rear walls and holding at least one sheet of film with a dark slide to protect the film from exposure; (b) at least one of said walls having a first member with a channel receiving an edge of said dark slide; (c) said first member further including a light-conducting portion having an inner surface abutting the film; and (d) a strip having light-transmitting media thereon secured to said inner surface of the light-conducting portion, the sheet of film having an edge positioned directly underneath said inner surface; whereby the light passing through the light-transmitting media secured to the light-conducting portion exposes the edge of the film.
Claim 2
Dependent Claim
132 words
An improved sheet film holder to provide a desire media exposure for a sheet of film, comprising: (a) sheet film holder means having front, side and rear walls and holding at least one sheet of film with a dark slide to protect the film from exposure; (b) at least one of said walls having a first member with a channel receiving an edge of said dark slide; (c) said first member further including a light-conducting portion having an inner surface abutting the film; and (d) a strip having light-transmitting media thereon secured to said inner surface of the light-conducting portion, the sheet of film having an edge positioned directly underneath said inner surface; whereby the light passing through the light-transmitting media secured to the light-conducting portion exposes the edge of the film.
Claim 3
Dependent Claim
40 words
The invention according to claim 1 the first member having a hinge, the hinge being pivotally connected to the rear wall to allow rotational movement of the first member for facilitating insertion and removal of the film and the strip.
Claim 4
Dependent Claim
40 words
The invention according to claim 2, the light conducting portion including a connecting member and an inner arm formed with the inner surface, conducting ambient light into the interior of the holder, and through the non-opaque portions of the strip.
Claim 5
Dependent Claim
30 words
The invention according to claim 3, the holder including a back plate with sheets of film on each side thereof, and having a film retaining member on each side thereof.
Claim 6
Dependent Claim
22 words
The invention according to claim 1, the channel receiving the slide being defined by an outer arm and the light conducting portion.
Claim 7
Dependent Claim
40 words
The invention according to claim 1, the light conducting portion including a connecting member and an inner arm formed with the inner surface, conducting ambient light into the interior of the holder, and through the non-opaque portions of the strip.
Claim 8
Dependent Claim
39 words
The invention according to claim 6, the first member having a hinge, the hinge being pivotally connected to the rear wall to allow rotational movement of the member for facilitating insertion and removal of the film and the strip.
Claim 9
Dependent Claim
22 words
The invention according to claim 6, the channel receiving the slide being defined by an outer arm and the light conducting portion.
Claim 10
Dependent Claim
31 words
The invention according to claim 8, the holder including a back plate with the sheets of film on each side thereof, and having a film retaining member on each side thereof.
References Cited (Backward Citations)
US1323364A
Cited
US1376032A
Cited
US1330235A
Cited
US2188843A
Cited
US2315987A
Cited
US2377226A
Cited
US3631243A
Cited
US3916423A
Cited
US4268144A
Cited
US4634249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-22 | 1992-11-21 | 1993-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-22 | 1996-11-21 | 1997-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-22 | 2000-11-21 | 2001-05-23 | $7700.00 | Window Closed / Lapsed |