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:
Oct. 11, 1983
Filed:
Jul. 02, 1981
Joseph E Murray, Jr, Malden, MA (US);
Paul J Sylvester, Reading, MA (US);
Polaroid Corporation, Cambridge, MA (US);
Abstract
A capacitance-type electrostatic transducer is provided that can be operated in an environment where it may be subjected to excessive mechanical vibrations. Unwanted gain variations and/or spurious electrical signals produced by said transducer when operated in such an environment are precluded by preventing relative movement between the spring that urges the backplate into cooperative engagement with the vibratile diaphragm of the transducer and said transducer backplate, at the point of contact between said spring and said backplate.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile