Patent ID: 8955542
Filing Date: 2015-02-17
Classification: B60H,F16K,Y10T

Abstract:
1. An apparatus for use in venting a compartment in a vehicle, said apparatus comprising: a housing which at least partially defines an air flow passage, a valve element which is movable from a closed condition to an open condition to enable air to flow through said air flow passage, a spring which is deflected as said valve element moves from the closed condition toward the open condition and is effective to urge said valve element toward the closed condition, and a spring connection interconnecting said spring and said valve element, said spring connection transmitting a substantially constant force urging said valve element toward the closed condition as said valve element moves toward the open condition, said spring connection including an end portion of said spring, said end portion of said spring transmitting force from said spring to said valve element, said end portion of said spring and said valve element being relatively movable to change a distance between a portion of said spring and a location where force is transmitted to said valve element as said valve element moves toward the open condition.