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:
May. 10, 1988
Filed:
Apr. 10, 1987
Applicant:
Inventors:
Douglas B Vonderhaar, Highland, MI (US);
Donald E McGeachy, Milford, MI (US);
Assignee:
Numatics, Incorporated, Highland, MI (US);
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
137115 ; 137466 ; 1375125 ; 137551 ;
Abstract
A coolant system and control valve used in a circuit for cooling spot welding tips. The control valve normally passes coolant to and from the tips. Should a break in the coolant flow occur because of a breakdown of one or more of the tips, the control valve will shift to close the normal coolant loop and divert coolant from a pressure source to a tank until a repair is made. A switch indicator can be utilized for visual observation of a break and also a flow indicator is provided on the valve body to indicate normal coolant flow.