Patent US4101030A successfully refreshed from Google Patents.
US4101030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cassette
Assignee: Individual
•
Filing: 1977-06-03
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Granted: 1978-07-18
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Expires: 1997-06-03
Abstract
Abstract A cassette and associated spool for film, sound track and like material, with means for supporting the outer areas of the spool flanges to prevent sagging and warping of the spool flanges. The support means comprises interengaging formations on the cassette and on the spool. The interengaging formations may include projections on one of the cassette and the spool and recesses on the other of the cassette and the spool. Alternatively, the formations may comprise resiliently and radially displaceable areas of the cassette side wall which locate between the spool flanges when the cassette lid is fitted to the cassette base.
Inventors
- 👤 Wilhelm Kroeber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:29
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/027
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
115 words
A cassette and associated spool for film, recording tape, and similar material and a means for supporting the outer areas of the spool flanges characterized in that areas (21,31, 41,42) of the side wall (20,30,40) of the base of the cassette corresponding in height substantially to the spacing between adjacent sides of the spool flanges (23,24) are arranged to be resiliently and radially displaceable in relation to the other wall areas and provided with projections (22,32,43) on their outer sides and including means responsive to the application of the cassette lid (25) to the base of the cassette so that said areas will be pressed into the inside of the cassette between the spool flanges.
Claim 2
Dependent Claim
115 words
A cassette and associated spool for film, recording tape, and similar material and a means for supporting the outer areas of the spool flanges characterized in that areas (21,31, 41,42) of the side wall (20,30,40) of the base of the cassette corresponding in height substantially to the spacing between adjacent sides of the spool flanges (23,24) are arranged to be resiliently and radially displaceable in relation to the other wall areas and provided with projections (22,32,43) on their outer sides and including means responsive to the application of the cassette lid (25) to the base of the cassette so that said areas will be pressed into the inside of the cassette between the spool flanges.
Claim 3
Dependent Claim
31 words
A cassette according to claim 1, characterized in that the resilient and displaceable wall areas (21,31,41,42) have a lesser thickness than the remainder of the side wall (20,30,40) of the base.
Claim 4
Dependent Claim
41 words
A cassette according to claim 1 characterized in that the resilient and displaceable wall areas are formed by tongues cut in the side wall (30,40) of the base, at the moveable end portions of which tongues, said projections (32,43) are arranged.
Claim 5
Dependent Claim
17 words
A cassette according to claim 3, characterized in that said tongues (31) extend in a horizontal direction.
Claim 6
Dependent Claim
27 words
The cassette according to claim 3 characterized in that the resilient and displaceable wall areas are formed of two vertically directed extending tongues (14,42) with free ends.
References Cited (Backward Citations)
CA707978A
Cited
US2045652A
Cited
US2151025A
Cited
US3231081A
Cited
GB1045201A
Cited
US3339718A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-17 | 1982-01-16 | 1982-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-17 | 1986-01-16 | 1986-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-17 | 1990-01-16 | 1990-07-18 | $7700.00 | Window Closed / Lapsed |