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:
Jan. 25, 1977
Filed:
Jul. 31, 1975
Willard J Opocensky, Los Angeles, CA (US);
Xerox Corporation, Stamford, CT (US);
Abstract
Method and apparatus for moving a plurality of transducer heads to and from an operative position adjacent the magnetic surfaces of a plurality of rotating disks in a magnetic disk storage system. The transducer heads are supported on a 'T' Bar attached to a carriage. The transducer heads are loaded or urged towards their respective disk surfaces in pairs of one up (left) and one down (right) or one down (left) and one up (right) by means of a torsion bar. A like plurality of camming elements are mechanically linked with the carriage and are movable radially with the elongated supports to restrain the heads from contact with the disk surfaces until a loading position is reached substantially inward of the circumferences of the disks, after which the camming elements are moved to a withdrawn position and held there by a solenoid-operated latch, thereby allowing the transducer heads to be moved to any desired radial position. The solenoid-operated latch is released on the interruption of electric current to the disk storage system, and a spring then acts to unload the heads from the disk surfaces and to retract both the transducer heads and the camming elements before damage can be sustained by the disk surfaces.