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:
Dec. 25, 1984
Filed:
Dec. 19, 1983
E Marston Moffatt, Glastonbury, CT (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
The flexible membrane for sensing a differential pressure in a cylindrical sensor is made from a tube with heavy end rings that gradually taper down to form a flexible membrane such that stresses from membrane flexions are distributed throughout the end rings to prevent the stresses from being transmitted to the joints between the tube and its supporting structure thereby reducing hysteresis and creep deformation effects; temperature and stray capacitance effects are minimized by using the capacitive sensor in a tank circuit having an inductor integral to the transducer structure, the tank circuit oscillating at its resonant frequency for use in indicating the differential pressure.