US4504028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording tape cartridge
Assignee: Maxell Ltd
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Filing: 1983-05-12
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Granted: 1985-03-12
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Expires: 2003-05-12
Abstract
Abstract A recording tape cartridge having a front lid member for protecting a recording tape running along the front face of the cartridge and a lid locking mechanism for locking the lid member in a closed position, said locking mechanism being mounted in a clearance defined between a stepped side wall of the cartridge and a connecting member of the lid member for connecting the lid member on the cartridge case.
Inventors
- 👤 Shinichi Goto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:40
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/04; G11B23/08; G11B23/087; G11B23/08707; G11B23/08735; G11B23/08785
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
244 words
In a recording tape cartridge comprising: a cartridge case formed by a top section and a bottom section assembled together with a front face of the cartridge case opened, a front lid member having a front plate with a recess formed in a lower end portion thereof and connecting members projecting rearward from both side end portions of said front plate, said front lid member being pivotally connected to said cartridge case in a manner capable of being opened and closed for closing the front face of the cartridge case, a clearance defined between one of two side walls of said cartridge case and one of said connecting members opposing to said one side wall so as to face said recess, and locking means for locking said front lid member in a closed condition, said locking means being provided with a pressed portion for engagement by a locking release member of a recording device and arranged in the above defined clearance so that said locking release member of said recording device entering said clearance through the recess of said front lid member is brought into contact with said pressed portion of said locking means for releasing said lid locking means, said clearance being formed with a wide front portion and a narrow rear portion having a boundary connected by a slanting surface for guiding entrance of said locking release means, said pressed portion of the locking means being arranged in said narrow rear portion.
Claim 2
Dependent Claim
244 words
In a recording tape cartridge comprising: a cartridge case formed by a top section and a bottom section assembled together with a front face of the cartridge case opened, a front lid member having a front plate with a recess formed in a lower end portion thereof and connecting members projecting rearward from both side end portions of said front plate, said front lid member being pivotally connected to said cartridge case in a manner capable of being opened and closed for closing the front face of the cartridge case, a clearance defined between one of two side walls of said cartridge case and one of said connecting members opposing to said one side wall so as to face said recess, and locking means for locking said front lid member in a closed condition, said locking means being provided with a pressed portion for engagement by a locking release member of a recording device and arranged in the above defined clearance so that said locking release member of said recording device entering said clearance through the recess of said front lid member is brought into contact with said pressed portion of said locking means for releasing said lid locking means, said clearance being formed with a wide front portion and a narrow rear portion having a boundary connected by a slanting surface for guiding entrance of said locking release means, said pressed portion of the locking means being arranged in said narrow rear portion.
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) | 1988-03-11 | 1988-09-10 | 1989-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-11 | 1992-09-10 | 1993-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-11 | 1996-09-10 | 1997-03-12 | $7700.00 | Window Closed / Lapsed |