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. 07, 1982
Filed:
Jan. 21, 1981
Byron L Jackson, Knoxville, TN (US);
Robertshaw Controls Company, Richmond, VA (US);
Abstract
An internal combustion engine coolant system having a radiator for receiving coolant into an inlet thereof from an outlet of the engine through a thermostat that is disposed intermediate the outlet of the engine and the inlet of the radiator and having a coolant pump for circulating the coolant through the engine from an inlet of the engine to the outlet thereof, the pump having a first inlet interconnected to the outlet of the engine upstream of the thermostat and a second inlet interconnected to the outlet of the radiator while having its outlet interconnected to the inlet of the engine. The thermostat has a vent valve unit carried by the main valve member thereof for venting air from the outlet of the engine to the inlet of the radiator when the main valve member of the thermostat is in a closed condition against the main valve seat thereof and the system is being filled with coolant that is being introduced into the radiator and for preventing coolant flow through the vent valve unit when the pump is circulating the coolant and the main valve member of the thermostat is in a closed condition against the main valve seat, the vent valve unit comprising a vent opening through the main valve member and a flexible valve member for opening and closing the vent opening. The flexible vent valve member is normally held in spaced relation from the vent opening and is adapted to be flexed against the vent opening to close the vent opening by the coolant being circulated by the pump.