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:
Apr. 29, 1980
Filed:
May. 08, 1978
Roy K Kodama, Thousand Oaks, CA (US);
Gould Inc., Rolling Meadows, IL (US);
Abstract
An improved isolation diaphragm assembly for use in pressure transducers includes an open plenum containing an inert transmission fluid such as silicone oil. The plenum opening is bridged by a corrugated, circular diaphragm which has been tack welded at spaced locations on its periphery and then deformed into an underlying circular groove in the transducer housing, thereby providing a smooth sealing surface between the tack welds and the deformed portion. A domed cover having an O-ring seal contacting the smooth sealing surface is attached to the transducer housing so that a fluid whose pressure is to be measured may be introduced on the other side of the diaphragm from the inert transmission fluid. A method of manufacture is also disclosed.