US4347933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Case for holding magnetic tape cassette
Assignee: ITEK ELECTRONICS Co Ltd A CORP OF JAPAN
•
Filing: 1980-07-11
•
Granted: 1982-09-07
•
Expires: 2000-07-11
Abstract
Abstract A case for holding a magnetic tape cassette has flat locking projections or tabs upright from the inner wall surface thereof to engage the hubs of the magnetic tape cassette and thereby lock the hubs unrotatably. The locking tabs are formed with a step each in the upper part. The step of each said tab is parallel or inclined to the place of the inner wall surface.
Inventors
- 👤 Toshihiko Ishida
- 👤 Kimio Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:48
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/023; G11B23/0233
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
62 words
A case for holding a magnetic tape cassette, the case having flat locking projections or tabs upright from the inner wall surface thereof to engage the hubs of the magnetic tape cassette and thereby lock the hubs unrotatably, characterized in that said locking tabs have a uniform thickness and have a step formed in the upper part of each said locking tab.
Claim 2
Dependent Claim
62 words
A case for holding a magnetic tape cassette, the case having flat locking projections or tabs upright from the inner wall surface thereof to engage the hubs of the magnetic tape cassette and thereby lock the hubs unrotatably, characterized in that said locking tabs have a uniform thickness and have a step formed in the upper part of each said locking tab.
Claim 3
Dependent Claim
36 words
A case for holding a magnetic tape cassette according to claim 1, in which said step of each said tab is parallel to the plane of the wall surface from which said tab is transversely disposed.
Claim 4
Dependent Claim
36 words
A case for holding a magnetic tape cassette according to claim 1, in which said step of each said tab is inclined to the plane of the wall surface from which said tab is transversely disposed.
Claim 5
Dependent Claim
26 words
A case for holding a magnetic tape cassette according to claim 3, in which the angle of inclination of the step is not more than 45°.
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) | 1985-09-06 | 1986-03-08 | 1986-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-06 | 1990-03-08 | 1990-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-06 | 1994-03-08 | 1994-09-07 | $7700.00 | Window Closed / Lapsed |