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:
Aug. 16, 1983
Filed:
Mar. 30, 1981
Roy J Edwards, San Jose, CA (US);
Disctron, Inc., Milpitas, CA (US);
Abstract
A head access door mechanism for a cartridge containing a magnetic disc is described. The mechanism employs a bellcrank, located inside the cartridge, to which the door for the head access opening is coupled. The door slides in grooves located along the top and bottom of the side of the cartridge. The bellcrank is spring-loaded and forces the door closed and inward against a seal located around the head access opening. An interfering lip located along the inside of the groove slightly beyond the end of the door when the door is in the closed position interferes with the door so that it cannot be opened by a force applied directly to the door at the head access opening which would tend to slide the door within the groove. When inserted into a disc-drive assembly, a pin in the disc-drive assembly exerts a force on the second arm of the bellcrank to overcome the spring-loading. This causes the door the move away from the sealing surface surrounding the head access opening and outward past the interfering lip, permitting the door to slide open.