|국가/구분||United States(US) Patent 등록|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 0 인용 특허 : 6|
A fast acting flow control valve uses an electronically-actuated, short-stroke 3-way pilot poppet to actuate a primary poppet valve, for example, to provide impulse thrust to an air or space vehicle. The pilot poppet arrangement has an electromagnetic actuator for positioning the pilot poppet with respect to first and second seats. When the pilot poppet is sealed against the first seat a pressure passage communicates with seat openings and a vent passage of the valve is blocked from the seat openings. When the pilot poppet is sealed against the second se...
1. A flow control valve, comprising: a first seat spaced from a second seat, the first and second seats having openings therethrough;a pilot poppet disposed between the first and second seats and movable along an axis, the pilot poppet having first and second sealing surfaces which alternatively seal against the respective first and second seats;a primary poppet having a sealing surface to seal against a primary seat, the primary poppet sealing against the primary seat when the pilot poppet is sealed against the first seat and the primary poppet being un...