Clutch-brake steering mechanism for tractors

Details Clutch-brake steering mechanism for tractors Clutch-brake steering mechanism for tractors

1975-03-24

1977-04-05

Cohan, Alan

Fluid handling

Self-proportioning or correlating systems

Supply and exhaust type

13759614, 1376256, 192 12C, F15B 1306

Patent

active

040156192

ABSTRACT:
Clutch-brake steering unit having hydraulically actuated cylinders for controlling same to control rotation of a track-drive sprocket in a crawler tractor. Specifically a clutch cylinder and a brake cylinder provided in the unit have an inlet-outlet port in common, and are so arranged on a spring-applied-brake, hydraulically-applied-clutch basis that a single pressure signal in the inlet-outlet port alternately operates the cylinders to apply the brake and release the clutch, to apply the clutch and release the brake, or by proper modulation to partially engage either, i.e., slip the clutch or drag the brake to intermediate degrees as desired.

REFERENCES:
patent: 3540559 (1970-11-01), Shore
patent: 3677362 (1972-07-01), Chatterjea
patent: 3693503 (1972-09-01), Ruhl et al.
patent: 3706322 (1972-12-01), Carlson
patent: 3757915 (1973-09-01), Momose
patent: 3843205 (1974-10-01), Shore

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