Patent ID: 6206044
Filing Date: 2001-03-27
Classification: F04B,F16H,G05D,Y10T

Abstract:
A by-pass solenoid (32), comprising:a solenoid sub-assembly (50) having a movable armature (70) constructed to translate with respect to an electrical coil (64) in response to a change in an electrical signal being applied to said electrical coil (64); anda valve sub-assembly (52), said valve sub-assembly (52) including a valve body (116) coupled to said solenoid sub-assembly (50) and receiving a poppet valve member (78) translatable with said armature (70),said valve body (116) having at least an inlet port (34), an outlet port (40), and a by-pass port (42) therein, said valve body (116) having a stepped bore (118) extending therethrough, said stepped bore (118) being fluidly connected to said inlet port (34), said outlet port (40), and said by-pass port (42), said stepped bore (118) having at least a first chamber (120) fluidly connected to said inlet port (34) and said outlet port (40), said valve sub-assembly (52) further including a check valve assembly (36) disposed within said first chamber (120), said check valve assembly (36) being constructed to fluidly communicate with said inlet port (34), said outlet port (40), and said by-pass port for selectively discharging fluid from a desired port of said valve sub-assembly (52).