Jansen's Aircraft Systems Controls, Inc.

Jansen's Aircraft System Controls, Inc.

Jansen's Aircraft Controls Systems, Inc.

David G Hayward

Harvey B Jansen

Kevin W Deutscher

Jerame James Powell

Douglas W Knight

A servo valve has a heatsink housing with a plurality of external fins. The heatsink housing contains an electromagnet arrangement and a valve arrangement. The electromagnet arrangement has a magnet assembly, a coil assembly, pole pieces, and an armature acted upon by flux generated by the electromagnet. A conductive support member connects the coil assembly to the heatsink housing. The valve arrangement has a valve member driven by the armature to control flow between an inlet port and an outlet port. The valve arrangement is positioned in the heatsink housing on an opposite side of a seal plate from the electromagnet arrangement. The support member holds the coil assembly spaced from the seal plate and in a thermally conductive path to the heatsink housing.

Thermo-stratified, passive-cooled servo valve

A sealed solenoid provides an improved actuator for valves and other devices, particular such devices used in extreme environments and/or with corrosive media. For example, the improved solenoid construction can be used to drive a precision flow control valve used in air and space applications, such as to control fuel and oxidizer combustion media in rocket and other thrust components. The solenoid is retained in a solenoid retainer to which is attached a rigid barrier that isolates the solenoid pole piece and coil from the media. A clapper disposed outside the barrier from the solenoid serves as the armature, receiving magnetic flux from the solenoid through the barrier without interference from the barrier. The barrier may be extremely thin and magnetically inert.

Sealed solenoid and solenoid valve

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 seat the pressure passage is blocked from the seat openings and the vent passage communicates with the seat openings. The primary valve arrangement has a primary poppet that seals against a primary seat when the pilot poppet is sealed against the first seat and is unseated when the pilot poppet is sealed against the second seat.

Growing community of inventors

Scottsdale, AZ, United States of America

David G Hayward