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:
Sep. 01, 1981
Filed:
Jun. 16, 1980
Backman Wong, Wayland, MA (US);
Earl L Wilson, Wellesley, MA (US);
Standard-Thomson Corporation, Waltham, MA (US);
Abstract
A thermally responsive valve device having non-linear flow characteristics. The valve device is particularly adapted to control fluid flow in an automotive coolant system. The thermally responsive valve device includes movable and stationary valve structure. A movable valve member is movable to create a flow passage and to adjust the open area thereof, but movement of the movable valve member provides a non-linear relationship between the area of the flow passage created and the distance of travel of the movable valve member. The stationary valve member is provided with a valve seat having a sloping encompassng wall so that with slight opening movement of the movable closure member a very limited volume of fluid flow is permitted. As the movable valve member continues to move in an opening direction, the non-linear relationship between the distance of movement of the movable valve member and the flow area created continues. The fluid flow gradually increases until a specific maximum flow rate is achieved. This operating characteristic eliminates or dramatically reduces temperature fluctuations in the coolant system.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile