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:
Sep. 27, 1994
Filed:
Jul. 28, 1992
Tetsuo Kanno, Ebina, JP;
Akihiko Okamoto, Yokohama, JP;
Ricoh Company Ltd., Tokyo, JP;
Abstract
An optical disk drive unit has an opening portion formed in a body case to insert an optical disk cartridge having an optical disk therein into the body case and take the optical disk cartridge out of the body case; a driving device for receiving and rotating the optical disk; and a rotatable shutter for opening and closing the opening portion. A leg portion extends from a shutter body. A center of rotation of the leg portion is located on a side of the driving device disposed within the body case and away from the opening portion of the body case. No closing operation of the shutter body is influenced by mounting the optical disk cartridge into the body case. At least one face of the shutter may be constructed by an arc face having a shape approximately equal to the shape of an arc around the center of rotation. A projecting portion may be disposed outside the shutter. In this case, a lower portion of the projecting portion comes in contact with the optical disk cartridge after an end portion of the projecting portion comes in contact with the optical disk cartridge.