Flow control valve

Details Flow control valve Flow control valve

1991-12-12

1993-02-09

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

25112911, F02M 2507

Patent

active

051845938

ABSTRACT:
Herein disclosed is a flow control valve, in which a lift type valve member having a valve stem is disposed in a valve housing and in which a motor has an output shaft moving in an axial direction inside of a rotor through threaded portions. The valve member is moved in a closing direction through the valve stem when the output shaft moves in the projecting direction. A first retainer is attached to the leading end of the output shaft, and a coil spring for urging the output shaft in the projecting direction is sandwiched between the first retainer and the front portion of the motor. To the leading end of the valve stem, there is attached a second retainer which is connected to the first retainer through a valve closing coil spring for urging the valve stem in the closing direction. The former coil spring has its spring force set weaker than that of the latter valve closing coil spring.

REFERENCES:
patent: 4064851 (1977-12-01), Wessel
patent: 4473056 (1984-09-01), Ishida et al.
patent: 4674464 (1987-06-01), Akagi
patent: 4742989 (1988-05-01), Akagi
patent: 4782811 (1988-11-01), Hewette et al.
patent: 4961413 (1990-10-01), Grey et al.

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