192 clutches and power-stop control – Clutches – Operators
Patent
1979-04-13
1981-12-29
Krizmanich, George H.
192 clutches and power-stop control
Clutches
Operators
F16D 2510
Patent
active
043077960
ABSTRACT:
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. Actuator 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 defined by the valve body.
REFERENCES:
patent: 3595352 (1971-07-01), Todeschini
patent: 3831725 (1974-08-01), Schott
patent: 3882738 (1975-05-01), Audiffred et al.
patent: 3895703 (1975-07-01), Schmitt et al.
patent: 3899058 (1975-08-01), Pasquini
patent: 3991787 (1976-11-01), Schmitt et al.
patent: 4029188 (1977-06-01), Okano
patent: 4132302 (1979-01-01), Chatterjea
Burdette Stephen D.
Cackley George W.
Hakes Gary A.
Morris Hugh C.
Shook Norma G.
Caterpillar Tractor Co.
Krizmanich George H.
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