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:
Jan. 21, 1986
Filed:
Dec. 09, 1983
Applicant:
Inventor:
Thomas A Knecht, Minnetonka, MN (US);
Assignee:
Rosemount Inc., Eden Prairie, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01L / ;
U.S. Cl.
CPC ...
73718 ; 361283 ;
Abstract
A transducer has a first and second sensing diaphragm configured such that a first pressure P1 is applied to the first diaphragm and a second pressure P2 is applied to the second diaphragm and wherein both diaphragms are formed on the same substantially flat face of a diaphragm wafer. The transducer is configured such that each diaphragm responsive to P1 or P2 respectively also affects a fluid in a closed common fluid cavity such that the deflection of the diaphragm is representative of the pressure differential (P1-P2).