192 clutches and power-stop control – Clutch and brake – Vehicle type
Patent
1979-01-26
1980-12-23
Krizmanich, George H.
192 clutches and power-stop control
Clutch and brake
Vehicle type
74781R, F16D 6702, B60K 4124
Patent
active
042405343
ABSTRACT:
A geared steering clutch mechanism (18) for use in a vehicle having left and right side propelling devices (11,12) such as tracks, a power drive (16), and a final drive (15) connecting the power drive to the respective left and right propelling devices. The steering clutch mechanism includes a first clutch (24) selectively operable to connect the power drive to the associated final drive to provide a high speed connection therebetween, a speed reduction gear assembly (55,56,58), a second clutch (45) selectively operable to connect the power drive to the associated final drive through the speed reduction gear assembly to provide a reduced speed connection therebetween, and a brake (38) for braking the final drive concurrently with arranging the clutches to positively disconnect the power drive from the final drive. The final drive may be a multispeed drive so that the use of the clutch mechanism provides a two-time multiplication of the number of available output speeds as a function of the selective operation of the clutches. The speed reduction gear assembly may include a planetary gear (56) in meshing engagement with a sun gear (55) connected to the second clutch. The first clutch may be arranged to provide a substantially direct one-to-one driving connection between the power drive and final drive.
REFERENCES:
patent: 2876657 (1959-03-01), Allin et al.
patent: 2876659 (1959-03-01), Richardson
patent: 3601211 (1971-08-01), Finke
patent: 4082156 (1978-04-01), Krolak et al.
patent: 4128023 (1978-12-01), Kinder
Hedgcock Richard L.
Whitehurst Gerald E.
Caterpillar Tractor Co.
Krizmanich George H.
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