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. 22, 1980
Filed:
Aug. 21, 1978
Tommy L Gray, Dallas, TX (US);
Span Instruments, Inc., Plano, TX (US);
Abstract
A compensating bladder (30) for use in a pressure measuring device (10) for sensing pressure generated at a source. Pressure measuring device (10) includes a pressure responsive element (14) and pressure responsive structure (16) mounted within housing (12) for providing indications of pressures encountered at the source. The pressure responsive element (14) is connected by means of a socket (18), having an access opening (20), to the fluid source and for permitting pressure change to be sensed by the pressure responsive element (14). Compensating bladder (30) is disposed within the socket 18 to isolate pressure responsive element (14) from the fluid or gas entering the socket (18) and for forming a pressure transmitting chamber (66) that may be filled with a fluid. Compensating bladder (30) includes a generally longitudinal portion (44) and an integrally connected generally cylindrical portion (32). Compensating bladder (30) permits pressure changes at the source to be transferred to the chamber (66) and sensed without exposing the interior of element (14) to the fluid or gas undergoing measurement.