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. 09, 1993
Filed:
Feb. 01, 1991
Applicant:
Inventors:
Kenneth A Johnson, Walworth, NY (US);
Charles E Ellis, Jr, Phelps, NY (US);
Assignee:
MDT Corporation, Torrance, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364558 ; 73717 ; 36457105 ; 377 19 ;
Abstract
Apparatus and methods for detecting pressure changes within the chamber of a pressure vessel are disclosed. The apparatus includes a pressure transducer which is gauge-referenced to atmospheric pressure and has bi-directional capability of determining pressure changes above and below atmospheric pressure. The transducer is structured to provide frequency output and is therefore connected directly to a microprocessor. The microprocessor includes structure programmed to compensate for variations in existing ambient atmospheric pressure.