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:
Nov. 02, 1993
Filed:
Apr. 24, 1991
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Abstract
An improvement is proposed in the assemblage of a cover-packing bult-up body for a magnetic hard-disc unit to be freed from the troubles caused by dusts or contamination of the gap space between the magnetic recording disc and the magnetic head as well as by the poor vibration-damping characteristics of the rubber packing between the covering member and the body of the casing. The improvement comprises, instead of using a pre-shaped rubber packing, the built-up body is assembled by using a curable liquid silicone rubber-based composition filled with fine hollow microspheres to form a packing on the surface of the covering member by the in situ curing of the composition applied thereto so that the rubbery packing layer has a spongy structure exhibiting good vibration-damping characteristics.