Transmission shift rod interlock system

Details Transmission shift rod interlock system Transmission shift rod interlock system

F - Mech Eng,Light,Heat,Weapons

16

H

74/136, 74/174,

F16H 63/44 (2006.01) F16H 61/16 (2006.01) F16H 63/30 (2006.01) F16H 63/34 (2006.01)

Patent

CA 1220648

-10- Title Transmission Shift Rod Interlock System Abstract of the Disclosure A shift rod air interlock system provides a mechanical apparatus for insuring a neutral position in a two-speed air shifted compound transmission whenever air to an auxiliary air shift cylinder is interrupted. The apparatus prevents the transmission from being shifted into gear whenever an associated vehicle is stationary and when a power take-off unit is operative. In addition, a two-position air interlock plunger assembly provides a locking plunger which interfaces with a pair of detents in the shift rod, thus insuring that the auxiliary transmission is prevented from being shifted into neutral whenever the air system is interrupted while the vehicle is moving. In a preferred form, the invention utilizes a shift rod selectively movable between at least three positions, including an intermediate neutral position.

459396

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