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Patent EP0264237A2 successfully refreshed from Google Patents.
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EP0264237A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Disk cartridge

Assignee: Maxell Ltd
•
Filing: 1987-10-09
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Granted: —
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Expires: 2007-10-09
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Abstract

Abstract A disk cartridge having a cartridge casing (1) containing a double-sided disk recording medium, a pair of head entry apertures (6A, 6B) formed in both surfaces of the cartridge casing, and a shutter member (7) having a U-shaped profile and slidably attached to the cartridge casing while pinching the same, the shutter member being at least capable of opening and closing the head entry apertures. At least one of the surfaces of the shutter member is provided with: a cover portion (71A, 71B) having a width slightly larger than the width of the head entry apertures in the direction of sliding movement of the shutter member; a front plate portion (33) projecting from the cover portion on the opposite sides thereof in the sliding direction, and moving along the front end surface of the cartridge casing; and abutting surfaces (36A, 36B) formed at the opposite ends of the front plate portion and adapted to be brought into contact with a shutter opening member.

Inventors

  • 👤 Yoshitake Kato

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-04 19:19
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/03; G11B23/0301; G11B23/0308

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 170 words
A disk cartridge having a cartridge casing l containing a double-side disk recording medium, a pair of head entry apertures (6A) or (6B) formed in two surfaces of said cartridge casing, and a shutter member (7) having a U-shaped profile and slidably attached to said cartridge casing while pinching the same, said shutter member being at least capable of opening and closing said head entry apertures, said disk cartridge being characterized in that at least one of the surfaces of said shutter member is provided with: a cover portion (7lA) or (7lB) having a width slightly larger than the width of said head entry apertures in the direction of sliding movement of said shutter member; a front plate portion (33) projecting from said cover portion on the opposite sides thereof in said sliding direction, and moving along the front end surface of said cartridge casing; and abutting surfaces formed at the opposite ends of said front plate portion and adapted to be brought into contact with a shutter opening member.
Claim 2
Dependent Claim 170 words
A disk cartridge having a cartridge casing l containing a double-side disk recording medium, a pair of head entry apertures (6A) or (6B) formed in two surfaces of said cartridge casing, and a shutter member (7) having a U-shaped profile and slidably attached to said cartridge casing while pinching the same, said shutter member being at least capable of opening and closing said head entry apertures, said disk cartridge being characterized in that at least one of the surfaces of said shutter member is provided with: a cover portion (7lA) or (7lB) having a width slightly larger than the width of said head entry apertures in the direction of sliding movement of said shutter member; a front plate portion (33) projecting from said cover portion on the opposite sides thereof in said sliding direction, and moving along the front end surface of said cartridge casing; and abutting surfaces formed at the opposite ends of said front plate portion and adapted to be brought into contact with a shutter opening member.
Claim 3
Dependent Claim 26 words
A disk cartridge according to claim l, wherein said cover portion and said front plate portion form in plan a T-shaped configuration of said shutter member.
Claim 4
Dependent Claim 38 words
A disk cartridge according to claim l, wherein the length of said front plate portion in said sliding direction is about 3 to 9 times as large as the width of said cover portion in said sliding direction.
Claim 5
Dependent Claim 44 words
A disk cartridge according to claim l, wherein a reinforcement portion (7lA) or (7lB) is formed at a root portion of said cover portion on the side of said front plate portion at which said cover portion is connected to said front plate portion.
Claim 6
Dependent Claim 36 words
A disk cartridge according to claim l, wherein a pair of opening member engaging portions (36A) or (36B) projecting forward from said front plate portion are formed at the opposite ends of said front plate portion
Claim 7
Dependent Claim 40 words
A disk cartridge according to claim 4, wherein said opening member engaging portion has a reinforcement portion (37A) or (37B) extending from the surface opposite to an engaging surface of said opening member engaging portion to said front plate portion.

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