Patent US4047653A successfully refreshed from Google Patents.
US4047653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film retriever
Assignee: Individual
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Filing: 1976-02-23
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Granted: 1977-09-13
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Expires: 1996-02-23
Abstract
Abstract Device for retrieving the free end of a roll of film from a film cartridge; curved inner and outer jaws are movable with respect to one another. The operation involves inserting the jaw ends into the cartridge, rotating the film within the cartridge until the free end is between the jaw ends, and grasping the film with the jaw ends.
Inventors
- 👤 Michael T. Starr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:57
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/28; G03B17/30
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
231 words
A device for retrieving the film leader from the inside of a film cartridge, comprising: a. an outside jaw end, b. an inside jaw end, each jaw end having a curved cylindrical surface with a radius approximately equal to that of the cartridge, each jaw end being attached to a generally flat base, and each jaw end and base being formed of a thin sheet of resilient material, c. an inserting means adapted to allow the insertion of the jaw ends into the film cartridge, d. a separating means adapted to cause separation of the jaw ends from time to time while they are in the cartridge, and e. a closing means adapted to bias the jaw ends toward one another from time to time while they are in the cartridge, the bases of the jaws being secured parallel to and are linearly slideable with respect to one another to form the separating and closing means, the combined thickness of the bases being substantially less than the smallest dimension of a tangentially-opening entrance in the cartridge, so that the device can pass through the entrance to form the inserting means and the bases can slide with respect to one another while in the entrance, a portion of one of the bases wrapping around a portion of the other base to hold the bases in parallel and to allow linear relative movement.
Claim 2
Independent Claim
231 words
A device for retrieving the film leader from the inside of a film cartridge, comprising: a. an outside jaw end, b. an inside jaw end, each jaw end having a curved cylindrical surface with a radius approximately equal to that of the cartridge, each jaw end being attached to a generally flat base, and each jaw end and base being formed of a thin sheet of resilient material, c. an inserting means adapted to allow the insertion of the jaw ends into the film cartridge, d. a separating means adapted to cause separation of the jaw ends from time to time while they are in the cartridge, and e. a closing means adapted to bias the jaw ends toward one another from time to time while they are in the cartridge, the bases of the jaws being secured parallel to and are linearly slideable with respect to one another to form the separating and closing means, the combined thickness of the bases being substantially less than the smallest dimension of a tangentially-opening entrance in the cartridge, so that the device can pass through the entrance to form the inserting means and the bases can slide with respect to one another while in the entrance, a portion of one of the bases wrapping around a portion of the other base to hold the bases in parallel and to allow linear relative movement.
Claim 3
Dependent Claim
23 words
A device as recited in claim 1, wherein a stop is provided to limit the insertion of the device to an optimum amount.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |