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:
Jul. 11, 1989
Filed:
Sep. 12, 1988
Applicant:
Inventor:
Leonard Nanis, Palo Alto, CA (US);
Assignee:
Xebec Corporation, San Jose, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B24B / ; B24B / ; B21C / ;
U.S. Cl.
CPC ...
29 9001 ; 51132 ;
Abstract
A contact burnishing head is described for memory surfaces of computer memory disks. The operating surface of the burnishing head is defined by a regular pattern of diamond-shaped protrusions. In one embodiment, a ramp face is provided along the leading edge of the head in order to prevent large asperities in the disk surface from interfering with proper burnishing. In another embodiment, two opposed edges of the head are provided with ramp faces so that a single head design can be used to burnish either the upper or the lower surface of a computer disk.