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:
Jun. 26, 2001
Filed:
Apr. 15, 1999
Myron Stein, Leguna Niguel, CA (US);
Other;
Abstract
A combination coolant filter and pressure regulator for an automotive engine's cooling system is configured to be spliced in line with the coolant supply line to the heater core. The filter has a housing and a filter element that is moveable within the housing between a first position opening up communication through the housing and a second position restricting communication through the housing. A spring biases the filter element toward its first position. Normal coolant flow through the housing passes through the filter for removal of entrained contaminants. Under conditions of high coolant flow and thus high pressures, the filter element moves against the bias of the spring toward its second position restricting coolant flow and protecting the heater core from damage due to coolant overpressure.