B - Operations – Transporting – 60 – K
Patent
B - Operations, Transporting
60
K
303/71
B60K 41/24 (1980.01)
Patent
CA 1100556
VEHICLE STEERING BRAKE AND CLUTCH CONTROL A B S T R A C T A crawler tractor vehicle having steering clutches and associated steering brake includes a control apparatus for each clutch and brake system, including a valve made up of a valve body, and a clutch valving spool and a brake valving spool movably associated therewith. In one embodiment, the clutch valving spool and brake valving spool are identical in configuration, and are disposed in a common bore. Actua- tor means are associated with such clutch valving spool and brake valving spool, in one embodiment including an actuator assembly made up of a plurality of plungers movable relative to each other and relative to the valve body to provide particular movement of the clutch and brake valving spools. In another embodiment, the actuator means comprise mechanical linkage means, for providing movement of brake and clutch valving spools positioned in respective separate bores de- fined by the valve body.
352659
Burdette Stephen D.
Cackley George W.
Hakes Gary A.
Morris Hugh C.
Shook Norma G.
Caterpillar Tractor Co.
Smart & Biggar
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