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. 18, 1977
Filed:
Dec. 24, 1975
Applicant:
Inventor:
Francis Xavier Kay, Winslow, Bucks., EN;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01L / ;
U.S. Cl.
CPC ...
7340 / ;
Abstract
A pressure gauge comprises a gauge vessel filled with an indicating liquid that extends as a column into a reader tube; the gauge vessel has a deflectable wall portion such as a diaphragm that is resiliently biased, as by a plate spring pack in the gauge vessel, to resist inwards deflection under fluid pressure applied to a gauge port to which the deflectable wall portion is exposed. Deflection of the wall portion alters the liquid column length in the reader tube to indicate pressure. Differential and pressure-summing gauges are disclosed, as well as temperature-compensating arrangements.