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:
Dec. 03, 1985
Filed:
May. 04, 1984
Applicant:
Inventors:
Hal C Danby, Palo Alto, CA (US);
Carl Ritson, San Jose, CA (US);
Assignee:
Anatros Corporation, San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01L / ;
U.S. Cl.
CPC ...
73705 ; 2502 / ;
Abstract
An optical pressure sensor including a light source, a light detector and a capillary system positioned in the light path between the light source and detector. The capillary system inlet receives liquid from the external source to be monitored, and the outlet is closed or connects with a closed gas reservoir. Light absorbing liquid forced by liquid pressure into the capillary system absorbs a portion of light corresponding to the area occupied by the liquid. This reduces the output of the light detector in an amount functionally related to the liquid pressure.