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. 11, 1988
Filed:
May. 13, 1987
Applicant:
Inventors:
James J Grinsteiner, Roselle, IL (US);
George J Maat, Pompano Beach, FL (US);
Assignee:
Navistar International Transportation Corp., Chicago, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F01P / ; F16K / ;
U.S. Cl.
CPC ...
236 345 ; 251334 ;
Abstract
A choke type thermostat is provided with dual choke seals including a conventional primary choke and a secondary choke which seals with the valve seat of the thermostat prior to the sealing of the primary choke. The secondary choke provides additional sealing for the valve and also functions to strain the flow of coolant which is allowed to pass over the primary choke, thereby preventing sand or other debris from interfering with the sealing of the primary choke.