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. 24, 1978
Filed:
Jan. 14, 1977
Applicant:
Inventor:
George Wallis, Lexington, MA (US);
Assignee:
P. R. Mallory & Co. Inc., Indianapolis, IN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
29589 ; 2961 / ; 338-4 ;
Abstract
A method for mass producing silicon type pressure transducers and transducers resultant therefrom are disclosed. In the method, the major components of a plurality of transducers are simultaneously joined together by a field-assisted bonding technique which allows the components to be made of materials having an approximate match in coefficients of thermal expansion and therefore imparts improved performance characteristics to the individual transducers during operation. This method of mass production of transducers reduces the amount of operational steps and significantly reduces the amount of time and labor required for manufacture.