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. 04, 1978
Filed:
May. 16, 1977
Richard H Frische, Phoenix, AZ (US);
Timothy T Maxwell, London, GB;
Sperry Rand Corporation, New York, NY (US);
Abstract
A fluid pressure responsive transducer is disclosed of the kind having a thin flat vibrating diaphragm serving as a wall of a continuous pressure chamber for converting a variable fluid pressure magnitude directly into a variable frequency electrical signal. The thin flat diaphragm, secured only at its periphery to the chamber, becomes progressively stiffer as it is progressively deformed by fluid pressure loading more and more from its flat or unstressed position. A dual cavity configuration of the pressure chamber is formed by a rigid divider wall with a restricted passage therethrough. The effects of disturbing acoustic waves which might otherwise be generated interior of the fluid chamber or within pneumatic lines coupled thereto are thus suppressed.