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:
Aug. 09, 1994
Filed:
Jan. 19, 1993
Applicant:
Inventors:
Chester D Campbell, Rancho Santa Margarita, CA (US);
Sandra L Harper, Dana Point, CA (US);
Virender Jain, Lake Forest, CA (US);
Richard L Kenyon, Irvine, CA (US);
Alan Matthies, Milwaukee, WI (US);
Roy M Yabuki, Los Angeles, CA (US);
Assignee:
Parker-Hannifin Corporation, Cleveland, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25B / ; G01D / ;
U.S. Cl.
CPC ...
622283 ; 73753 ; 374 16 ;
Abstract
A heat transfer system includes a high side pressure sensor in the form of a temperature dependent resistance in heat exchange with the system working fluid to locally heat the fluid in response to a control signal. Control means are provided for applying the control signal to the resistance and detecting a minimum thermal resistance between the thermistor and the working fluid.