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. 04, 1980
Filed:
May. 01, 1978
Parker C Smiley, Oakland, CA (US);
Physics International Company, San Leandro, CA (US);
Abstract
A high pressure diaphragm for use with an electroexpansive material utilizes a generally planar central member, a generally outer flange-engaging member, and an annular ring member, which can have a frusto-conical shape, having its outer edge flexibly connected to the inner edge of the flange-engaging member and with its inner edge flexibly connected to the outer edge of the central member. The flexible connection includes a bridge member having a thickness less than the thickness of the annular ring member and maybe fabricated integrally with said annular ring member and with the central and flange-engaging members. In one embodiment the high pressure diaphgram is pre-loaded so that during movement no portion of the flexible connectors are in tension.