US4485989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording tape cassette
Assignee: Hitachi Ltd
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Filing: 1983-03-09
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Granted: 1984-12-04
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Expires: 2003-03-09
Abstract
Abstract A recording tape cartridge which comprises a lid member mounted on a cartridge case to rotate between a closed position and an opened position, clearance means defined in one corner of the cartridge case and a lid locking means provided in the clearance means for locking the lid member in the closed position. The lateral width of the clearance means is wider in its front portion than that in its rear portion.
Inventors
- 👤 Kenji Ogiro
- 👤 Shinichi Gotoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:03
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/04; G11B23/08; G11B23/087; G11B23/08707; G11B23/08735
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
216 words
A recording tape cartridge comprising: a cartridge case having a front wall, side walls and top and bottom walls for defining a chamber for accommodating a recording tape wound around a tape reel means; a lid member having a flat front plate and a pair of connecting plates projecting from said flat front plate, said lid member being rotatably mounted on said cartridge case with said connecting plates opposed to said respective side walls so as to rotate said flat front plate between a closed position and an opened position; an opening defined on a bottom portion of said flat front plate of said lid member; clearance means of variable width having a front end defined between one of said side walls and corresponding connecting plate of said lid member, said front end of said clearance means being connected with said opening of said lid member, said width of said clearance means being wider in its front portion than in its rear portion; and lid locking means provided in said clearance means for locking said lid member in a closed position, said locking means being operated by a locking release member of a recording device which enters inside said clearance means through said opening for releasing the locking condition of said lid member to open same.
Claim 2
Dependent Claim
216 words
A recording tape cartridge comprising: a cartridge case having a front wall, side walls and top and bottom walls for defining a chamber for accommodating a recording tape wound around a tape reel means; a lid member having a flat front plate and a pair of connecting plates projecting from said flat front plate, said lid member being rotatably mounted on said cartridge case with said connecting plates opposed to said respective side walls so as to rotate said flat front plate between a closed position and an opened position; an opening defined on a bottom portion of said flat front plate of said lid member; clearance means of variable width having a front end defined between one of said side walls and corresponding connecting plate of said lid member, said front end of said clearance means being connected with said opening of said lid member, said width of said clearance means being wider in its front portion than in its rear portion; and lid locking means provided in said clearance means for locking said lid member in a closed position, said locking means being operated by a locking release member of a recording device which enters inside said clearance means through said opening for releasing the locking condition of said lid member to open same.
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) | 1987-12-04 | 1988-06-04 | 1988-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-04 | 1992-06-04 | 1992-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-04 | 1996-06-04 | 1996-12-04 | $7700.00 | Window Closed / Lapsed |