Brakes – Internal-resistance motion retarder – Controlled by an operator remote from retarder
Patent
1994-07-08
1996-06-25
Butler, Douglas C.
Brakes
Internal-resistance motion retarder
Controlled by an operator remote from retarder
25112901, 280707, B60G 1708
Patent
active
055291520
ABSTRACT:
An embodiment of the present invention is a valve for selectively establishing communication of a fluid between first and second fluid bodies having first and second pressures, respectively. A valve element is carried within a valve body for linear reciprocal movement along a valve axis between a first position wherein an operative portion at the front of the valve element blocks communication between the first and the second fluid bodies and a second position wherein the first and second fluid bodies are in communication. The movement is responsive to a rearward force exerted by the fluid on the valve element due to the first pressure. The rearward force is less than the product of the first pressure and a cross-sectional area of the first fluid swept by the valve element. An actuator is located at or behind the valve element for applying and modulating forward force to the valve element for controlling the response of the valve element to the first pressure when the valve is located between the first and second positions.
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Parker Motion & Control Installation Information for Series R2P, R, PR, B, S, and UR Valves, date unknown.
Parker Motion & Control Series RD102 Relief Valve specification sheet, date unknown.
Parker Motion & Control Series RD083 and RD093 Relief Valve specification sheet, date unknown.
Parker Motion & Control Series RD103 Relief Valve specification sheet, date unknown.
Parker Motion & Control Series RDC103 Relief Valve with Reverse Free Flow Check Valve specification sheet, date unknown.
Parker Motion & Control Series RA161 Relief Valve specification sheet, date unknown.
Parker Motion & Control Series PR101 Pressure Reducing Valve specification sheet, date unknown.
Parker Motion & Control Series PR161 Pressure Reducing Valve specification sheet, date unknown.
Parker Motion & Control Series PR102 Pressure Reducing Valve specification sheet, date unknown.
Parker Motion & Control Series PRS102 Pressure Reducing Valve specification sheet, date unknown.
Parker Motion & Control Series PRS162 Pressure Reducing Spool specification sheet, date unknown.
Parker Motion & Control Series SV101 Sequence Valve specification sheet, date unknown.
Parker Motion & Control Series SV102 Sequence Valve specification sheet, date unknown.
Parker Motion & Control Series RU101 Differential Area Unloading Relief Valve specification sheet, date unknown.
Hamilton James M.
Woods Lonnie K.
AimRite Systems International, Inc.
Butler Douglas C.
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