US4002309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bobbin for cinematographic films
Assignee: Individual
•
Filing: 1975-07-10
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Granted: 1977-01-11
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Expires: 1995-07-10
Abstract
Abstract A bobbin for films has a center of "Nylon" with two interfitting seat sections and outer side plates loosely enclosing therebetween ratchet panels to rotate therein.
Inventors
- 👤 Alejandro Ruiz-Barbotteau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:39
CPC Classifications
B; B65; B65H; B65H75/00; B65H75/02; B65H75/04; B65H75/08; B65H75/14; G; G03; G03B; G03B21/00; G03B21/14; G03B21/32; G03B21/321; B65H2701/00; B65H2701/50; B65H2701/51; B65H2701/513; B65H2701/5136
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
73 words
Improved bobbin structure for films comprising in combination, a pair of film retaining panels defining a central circular aperture, a rotatable center hub of "Nylon" comprised of a plurality of interfitting pieces held in registration to define crevices on opposite sides thereof with two spaced walls held a fixed distance apart greater than the thickness of said panels for receiving thereinto loosely the circular aperture of said panels to rotate on the hub.
Claim 2
Dependent Claim
73 words
Improved bobbin structure for films comprising in combination, a pair of film retaining panels defining a central circular aperture, a rotatable center hub of "Nylon" comprised of a plurality of interfitting pieces held in registration to define crevices on opposite sides thereof with two spaced walls held a fixed distance apart greater than the thickness of said panels for receiving thereinto loosely the circular aperture of said panels to rotate on the hub.
Claim 3
Dependent Claim
33 words
The bobbin structure of claim 1, wherein the interfitting pieces comprise two registering center hub portions defining a base for winding the film, and two outer plates interfitting therewith to define said crevices.
Claim 4
Dependent Claim
33 words
A bobbin structure as defined in claim 2, wherein each of said registering center hub portions have a plurality of projections thereon with respective male and female clasps that register the two portions.
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) | 1980-01-11 | 1980-07-12 | 1981-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-11 | 1984-07-12 | 1985-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-11 | 1988-07-12 | 1989-01-11 | $7700.00 | Window Closed / Lapsed |