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US 5,293,293 AGranted
Disk cartridge for exchangeably accommodating a disk-shaped recording medium
AssigneeSony Corporation
InventorsHirokimi Iwata, Shuji Haruna
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AssigneeSony Corporation
InventorsHirokimi Iwata, Shuji Haruna
Estimating the term…
A disk cartridge includes a main body of the cartridge having an opening or its major surface by which the signal recording surface of an optical disk accommodated in the main body is exposed to outside and an aperture formed on the lateral surface orthogonal to the major surface of the main body for enabling the optical disk to be inserted into and taken out of the cartridge for disk exchange. The disk cartridge also an opening/closing member which is rotatably supported by the main body by pivot pins provided at its one end for engaging in recesses in the aperture in the main body, for opening and closing the aperture and, which is provided at its other end with a resilient arm having a retaining end pawl engageable with a mating retaining section in the main body. By actuation of the opening/closing member, the aperture in the main body is opened or closed to permit exchange of the optical disk.
A disk cartridge adapted to releasably receive therein a disk-shaped recording medium for engagement by a recording/reproducing means within the cartridge, said disk cartridge comprising:
A disk cartridge adapted to releasably receive therein a disk-shaped recording medium for engagement by a recording reproducing means within the cartridge, said disk cartridge comprising:
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
From the US filing history. Foreign family members aren’t listed.
Details: containers with interchangeable record carriers
Information storage based on relative movement between record carrier and transducer
Term ended 8 Mar 2011 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
1. Field of the Invention
This invention relates to a disk cartridge for exchangeably accomodating a disk-shaped recording medium, such as an optical disk or magneto-optical disk.
2. Related Art Statement
These and other objects and advantages to be derived from the present invention will become more apparent from the following description of a preferred embodiment of the invention.
FIG. 1 is an exploded perspective view of a disk cartridge according to the present invention.
FIG. 2 is an overall perspective view of the disk cartridge.
By referring to the drawings, a preferred embodiment of the present invention will be explained in more detail.
As shown in FIGS. 1 and 2, the disk cartridge of the present invention includes a main body of the cartridge 1 formed by an upper half 2 and a lower half 3 abutted and connected to each other. These halves 2 and 3 are each in the form of a flat rectangular plate which is formed by, for example, injection molding of a suitable synthetic resin material. Within this main body of the cartridge 1 is rotatably enclosed an optical disk 4 provided with a disk-shaped recording medium, such as a write-once type optical recording medium. Extending from the central sections towards the front edges of the upper and lower halves 2 and 3 of the main body 1 are substantially rectangular openings 7 and 8 which are adapted for exposing a central chucking section of an optical disk 4 accommodated therein and the signal recording surface of the optical disk 4 towards outside and which are faced by data signal recording/reproducing means, such as an optical pickup, adapted to record or reproduce data signals on or from the disk 4.
A shutter 9 for opening or closing the openings 7 and 8 is slidably mounted on the main body of the cartridge 1. This shutter 9 is formed by a thin metallic plate, such as a stainless steel plate, which is bent into the form of a letter U, and is made up of a first closure section 9a for closing the opening 7 in the upper half 2, a second closure section 9b for closing the opening 8 in the lower half 3 and a connecting section 9c for connecting these closure sections 9a and 9b to each other. As shown in FIGS. 2, 3 and 4, the shutter 9 is fitted from the front side over the outer surfaces of the main body of the cartridge 1, with the first and the second closure sections 9a and 9b extending over the openings 7 and 8 in the flat surface of the closure members 9a and 9b and sliding on the flat surfaces of the main body of the cartridge 1.