Rapid release valve mechanism

Details Rapid release valve mechanism Rapid release valve mechanism

F - Mech Eng,Light,Heat,Weapons

16

K

251/21, 303/46

F16K 31/524 (2006.01) B60T 13/66 (2006.01) B60T 15/42 (2006.01)

Patent

CA 2010246

TL-88-02 ABSTRACT OF THE DISCLOSURE A motor driven ball valve may be driven in two modes of operation; those modes are a normal or testing mode and an emergency mode. The ball valve, when in its full open position, has an air passage that allows for the rapid exhaust of air in the air pipe of the air brake system to atmosphere, thereby inducing the emergency application of the brakes. The rotating ball valve assembly is capable of infinite variation between its full closed and its full open positions. Thus, the motor drive, which is remotely controlled, can effectively modulate the reduction in air pressure in the air pipe for a variety of purposes, including normal operation of the brakes and testing the air brake system. The motor drive mechanism may be in a cam, gear, or follower configuration. When an emergency application of the brakes is required, the motor drive mechanism is disengaged to allow a spring or other torsion device to rapidly rotate the ball to full open position, while drawing minimal electrical power. the spring or other torsion mechanism is prestressed by the operation of the motor driven mechanism as it rotates the ball toward its closed position.

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