US3589637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Takeup reel for photographic apparatus
Assignee: Agfa Gevaert AG
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Filing: 1969-10-28
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Granted: 1971-06-29
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Expires: 1989-10-28
Abstract
Abstract A takeup reel which is used in cameras having means for automatically threading the leading end of the film comprises an annulus of teeth which engage and hold the leading end of roll film while the reel rotates about its axis to convolute the film around its core, and a washer which is rotatable with radial clearance on a hub of the shaft for the reel and is biased to an eccentric position in which it holds the film away from engagement with the majority of teeth to thus insure more satisfactory winding of exposed film on the core.
Inventors
- 👤 Karl Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:13
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/28; G03B17/30; G03B19/00; G03B19/02; G03B19/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
30 words
A combination as defined in claim 1, wherein said shielding element is a ring which is movable substantially at right angles to said axis and is adjacent to said teeth.
Claim 2
Dependent Claim
14 words
A combination as defined in claim 2, wherein said ring constitutes a flat washer.
Claim 3
Dependent Claim
23 words
A combination as defined in claim 2, wherein the outer diameter of said ring at least approximates the maximum diameter of said annulus.
Claim 4
Dependent Claim
29 words
A combination as defined in claim 4, further comprising biasing means for maintaining said shielding element in a position in which its center is laterally adjacent to said axis.
Claim 5
Dependent Claim
15 words
A combination as defined in claim 5, wherein said biasing means includes a spring-biased roller.
Claim 6
Dependent Claim
16 words
A combination as defined in claim 5, wherein said biasing means is installed in said housing.
Claim 7
Dependent Claim
26 words
A combination as defined in claim 1, wherein said shielding element is arranged to maintain the film away from engagement with the majority of said teeth.
Claim 8
Dependent Claim
29 words
A combination as defined in claim 1, further comprising a rotary hub mounted in said housing, said shielding element constituting a ring which surrounds said hub with radial clearance.
Claim 9
Dependent Claim
23 words
A combination as defined in claim 1, wherein said teeth have tips extending forwardly in the direction of rotation of said collecting member.
References Cited (Backward Citations)
US3384319A
Cited
US3450366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |