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:
Feb. 20, 1979
Filed:
Feb. 09, 1978
Applicant:
Inventors:
Ronald Edwards, San Clemente, CA (US);
Terence K Rhind, Riverside, CA (US);
Assignee:
Bourns, Inc., Riverside, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01L / ;
U.S. Cl.
CPC ...
73721 ; 73765 ;
Abstract
A piezoresistive differential pressure transducer in which the need for convoluted isolating diaphragms and oil fill is eliminated. The instrument as contemplated by the invention does not require O-ring seals or springs to provide over-pressure protection. The absence of convoluted diaphragms and oil minimizes inherent errors due to temperature variations and static line pressure effect.