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. 20, 1976
Filed:
Feb. 04, 1974
Applicant:
Inventor:
George E Lewis, Arcadia, CA (US);
Assignee:
Hydril Company, Los Angeles, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01L / ; G01L / ;
U.S. Cl.
CPC ...
7340 / ; 7339 / ;
Abstract
A transducer useful to measure fluid pressure over a wide range incorporates dual diaphragms for biasing a shaft whose axial motion operates a motion sensor, the movement of one diaphragm limited in one direction of shaft axial movement, and the movement of the other diaphragm limited in the opposite direction of shaft axial movement.