Patent US4579225A successfully refreshed from Google Patents.
US4579225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disc cartridge
Assignee: Maxell Ltd
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Filing: 1984-12-06
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Granted: 1986-04-01
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Expires: 2004-12-06
Abstract
Abstract In a disc cartridge comprising a top half and a bottom half assembled together to provide a disc case for rotatably accommodating a disc. A shutter member is slidably assembled to the disc case with at least one projection formed on the shutter member for engaging a guide slot defined along one edge of the disc case. A slit is defined extending from the one edge to the guide slot so that a resilient deformable portion is formed, whereby when the shutter member is assembled to the disc case, the resilient deformable portion can be resiliently deformed by the force applied to resilient deformable member by the projection of the shutter member for allowing the projection to ride over the resilient deformable portion.
Inventors
- 👤 Yoshitake Kato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:20
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/03; G11B23/033; G11B23/0332
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
142 words
A disc cartridge comprising a top half and a bottom half assembled together to provide a disc case for rotatably accommodating a disc, a shutter member slidably assembled to the disc case with at least one projection formed on said shutter member to engage a guide slot defined along one edge of at least one half of said disc case and at least one slit extending from said one edge to said guide slot so that a resilient deformable means is formed as a part of said at least one half of said disc case, whereby when said shutter member is assembled to said disc case, said resilient deformable means is resiliently deformed by a force applied to said resilient deformable means by said at least one projection of said shutter member allowing said projection to ride over said resilient deformable means.
Claim 2
Dependent Claim
142 words
A disc cartridge comprising a top half and a bottom half assembled together to provide a disc case for rotatably accommodating a disc, a shutter member slidably assembled to the disc case with at least one projection formed on said shutter member to engage a guide slot defined along one edge of at least one half of said disc case and at least one slit extending from said one edge to said guide slot so that a resilient deformable means is formed as a part of said at least one half of said disc case, whereby when said shutter member is assembled to said disc case, said resilient deformable means is resiliently deformed by a force applied to said resilient deformable means by said at least one projection of said shutter member allowing said projection to ride over said resilient deformable means.
Claim 3
Dependent Claim
38 words
The disc cartridge according to claim 1, wherein said shutter member is provided with two separate engaging projections and a part of said guide slot is opened through the slit to provide at least one resilient deformable means.
Claim 4
Dependent Claim
31 words
The disc cartridge according to claim 2, wherein said resilient deformable means is formed in a cantilever manner by the guide slot with said slit to form two resilient deformable means.
Claim 5
Dependent Claim
20 words
The disc cartridge according to claim 1, wherein an upper front end portion of said resilient deformable means is beveled.
Claim 6
Dependent Claim
44 words
The disc cartridge according to claim 4, wherein said shutter member is provided with projections only on one plate of said shutter member and a front edge portion of said disc case opposite to said resilient deformable means is shaped at a right angle.
Claim 7
Dependent Claim
46 words
The disc cartridge according to claim 3, wherein said two resilient deformable means are connected together at an intermediate portion of one edge portion of said disc case and each of said resilient deformable means are formed in said cantilever manner supported by said connected portion.
References Cited (Backward Citations)
US4469225A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-31 | 1989-09-30 | 1990-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-31 | 1993-09-30 | 1994-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-31 | 1997-09-30 | 1998-04-01 | $7700.00 | Window Closed / Lapsed |