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. 21, 1999
Filed:
Oct. 16, 1997
Hisashi Kaneko, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A structure for mounting at least a spring arm on at least a head arm is disclosed, which can meet the requirement for high recording density in a disk apparatus by effectively reducing the vibration of the head unit in operation. A head actuator includes at least a pair of heads mounted at the forward end of the head arm through the spring arm for reading/writing information in a discoidal recording medium. The base of the spring arm is fixedly welded to a fixing member. The head arm and the fixing member are coupled to each other by a caulking protrusion as a coupler formed on the fixing member. The overlapped portion of the head arm and the fixing member other than the coupler is formed with a vibration damping layer for preventing vibrations of one of the head arm and the fixing member from propagating to the other. This vibration damping layer is composed of a simple air gap or a vibration damping material filled in the air gap.