Patent US4160271A successfully refreshed from Google Patents.
Patent EP0079110A1 successfully refreshed from Google Patents.
EP0079110A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Information-disc cassette
Assignee: Koninklijke Philips NV
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Filing: 1982-11-09
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Granted: —
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Expires: 2002-11-09
Abstract
Abstract The cassette (6) contains a disc (7) within an enclosure (10A, B) which has two major walls (11A, B) and a peripheral wall (12A, B, C). The disc is rotatable by means of a drive apparatus (1). On each side of said disc information can be recorded and/or reproduced through openings (13A, B) in the major walls. For closing these openings there is provided a single closing member (14) which simultaneously closes both openings and which is bodily removable in a radial direction with respect to the disc and comprises a portion (14A, B) of each of the major walls of the information disc cassette and a portion (12C) of the peripheral wall between said two portions of the major walls.
Inventors
- 👤 Johannes Steenberg
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 02:44
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/03; G11B23/032; G11B23/0321; G11B23/0322; G11B23/0301; G11B23/0308
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
132 words
An information-disc cassette comprising a rotatable disc for carrying information and an enclosure comprising major walls on opposite sides of the disc and a surrounding peripheral wall, each of the major walls being formed with an opening for the passage of means for recording and/or reproducing the information on the disc, which opening can be closed by means of a closure member, characterized in that: - a single closure member is provided for simultaneously closing the two openings in the major walls, and - the closure member is removable from the enclosure in a radial direction with respect to the disc and comprises a removable portion of each of the major walls and a removable portion of the peripheral wall, the latter portion being disposed between said portions of the major walls.
Claim 2
Dependent Claim
132 words
An information-disc cassette comprising a rotatable disc for carrying information and an enclosure comprising major walls on opposite sides of the disc and a surrounding peripheral wall, each of the major walls being formed with an opening for the passage of means for recording and/or reproducing the information on the disc, which opening can be closed by means of a closure member, characterized in that: - a single closure member is provided for simultaneously closing the two openings in the major walls, and - the closure member is removable from the enclosure in a radial direction with respect to the disc and comprises a removable portion of each of the major walls and a removable portion of the peripheral wall, the latter portion being disposed between said portions of the major walls.
Claim 3
Dependent Claim
86 words
An information-disc cassette as claimed in Claim 1, characterized in that: - the major wall portions of the closure member extend in a radial direction beyond the centre of the disc, - the enclosure has a fully closed external shape when the closure member is in place, and - after the closure member has been removed, said openings in the major walls which provide access to expose the centre of the disc for the passage of drive members of a drive apparatus for rotating the disc.
Claim 4
Dependent Claim
50 words
An information-disc cassette as claimed in Claim 1, characterized in that: - the closure member is provided on the inner sides of its major wall portions with elastically compressible supporting means such that when the closure member has been fitted, the disc is clamped between the elastically compressible supporting means.
Claim 5
Dependent Claim
46 words
An information-disc cassette as claimed in Claim 1, characterized in that the closure member and the adjacent parts of the two major walls are provided with guide elements which co-operate with each other and which are capable of only rectilinear sliding movements relative to each other.
References Cited (Backward Citations)
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