Patent EP0139146A2 successfully refreshed from Google Patents.
EP0139146A2
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EP
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Recording disc cartridge
Assignee: Mitsumi Electric Co Ltd
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Filing: 1984-08-17
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Granted: —
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Expires: 2004-08-17
Abstract
Abstract In a recording disc cartridge comprising a disc case composed of a top half case and a bottom half case and a recording disc rotatably enclosed in the disc case, each of the said top half case and the bottom half case is provided with at least one pair of connecting bosses in such a manner that the connection bosses of one of the half cases are engageable with the corresponding connecting bosses of the other half case and that the connecting bosses are disposed in a symmetrical position relative to a phantom line passing the center of a head insertion hole and the center of a drive shaft insertion hole.
Inventors
- 👤 Kato Hitachi Maxell Ltd. Shihoryo Yoshitake
- 👤 Naoi Mitsuaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 06:32
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/03; G11B23/033; G11B23/0332
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
166 words
A recording disc cartridge which comprises a disc case composed of a top half case and a bottom half case each half case being provided with peripheral walls formed on the disc case, a drive shaft insertion hole defined on the central portion of the half case and a head insertion hole defined on a portion apart from said drive shaft insertion hole in the frontward direction on the central portion of the disc case relative to the left and right direction, characterized in that each of the said top half case and the bottom half case is provided with at least one pair of connecting bosses in such a manner that the connection bosses of one of the half cases are engageable with the corresponding connecting bosses of the other half case and that the connecting bosses are disposed in a symmetrical position relative to a phantom line passing the center of the head insertion hole and the center of the drive shaft insertion hole.
Claim 2
Dependent Claim
166 words
A recording disc cartridge which comprises a disc case composed of a top half case and a bottom half case each half case being provided with peripheral walls formed on the disc case, a drive shaft insertion hole defined on the central portion of the half case and a head insertion hole defined on a portion apart from said drive shaft insertion hole in the frontward direction on the central portion of the disc case relative to the left and right direction, characterized in that each of the said top half case and the bottom half case is provided with at least one pair of connecting bosses in such a manner that the connection bosses of one of the half cases are engageable with the corresponding connecting bosses of the other half case and that the connecting bosses are disposed in a symmetrical position relative to a phantom line passing the center of the head insertion hole and the center of the drive shaft insertion hole.
Claim 3
Dependent Claim
21 words
The recording disc cartridge according to claim 1, wherein said head insertion hole is communicated with the drive shaft insertion hole.
Claim 4
Dependent Claim
42 words
The recording disc cartridge according to claim 1, wherein said connecting bosses are formed by two pairs, with one pair situated on the front portion of the disc case and the other pair situated on the rear portion of the disc case.
Claim 5
Dependent Claim
81 words
The recording disc cartridge according to claim 1, wherein one of the pair of said connecting bosses is a cylindrical boss having a height higher than the peripheral walls of the half case and the other connecting boss is defined with a hole in such a manner that when both half cases are assembled together, said hole of the other connecting boss of one of the half case can be engageable with the cylindrical boss formed on the other half case.
Claim 6
Dependent Claim
45 words
The recording disc cartridge according to claim 3, wherein said connecting bosses situated on the front portion have a close fitting and the connecting bosses situated on the rear portion have a fitting looser than the fitting of the connecting boss on the front portion.
Claim 7
Dependent Claim
19 words
The recording disc cartridge according to claim 5, wherein said connecting bosses are securedly connected by a supersonic welding.
Claim 8
Dependent Claim
22 words
The recording disc cartridge according to claim 6, wherein portions of the peripheral walls are provided with stepped portion downwardly stepped outward.
References Cited (Backward Citations)
No citation records indexed.
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