The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 12, 1983
Filed:
Mar. 06, 1981
Raymond Llabres, Paris, FR;
Thomson-CSF, Paris, FR;
Abstract
A cassette for storing and handling optical disks without touching them, including in particular video disks recorded on both sides, the cassette comprising a plate contained in a plastic envelope. The plate comprises a first cavity in which the disk to be protected is positioned. An additional annular cavity is provided in the bottom surface of the plate. The cover of the envelope comprises a cavity of shape matching that of the additional annular cavity such that the recorded areas of both sides of the disk are protected. Additional conical surfaces bearing one on the other are provided in the cover and plate around the edge of the first cavity. Means for locking the plate in the envelope are also provided.