Automatic four-wheel drive transfer case

Details Automatic four-wheel drive transfer case Automatic four-wheel drive transfer case

1976-12-14

1978-10-10

Silverstrim, John P.

Motor vehicles

Steam traction engines

Spring mounted on axle

74665T, 74665G, 184 11R, 192 44, B60K 1734, F16D 1500

Patent

active

041191684

ABSTRACT:
A power transfer mechanism incorporated in a multiple path drive system comprises a transfer case disposed between a source of input torque and a pair of drive axles. Torque is transferred directly to one drive axle and is transferred automatically to the other drive axle through a double-acting roller clutch when required. The clutch is biased toward its engaged position by frictional contact between drag shoes and the case, the shoes themselves being biased toward frictional contact. Clutch bias is supplemented by the action of centrifugal force. The transfer case is constructed such that it may be assembled in two configurations; one in which the output shafts are coaxial and offset from the input shaft, and the other in which the input shaft and one output shaft are coaxial, the other output shaft being offset therefrom. Assembly in either configuration is simplified by the use of interchangeable parts to a large extent.

REFERENCES:
patent: 2399201 (1946-04-01), Buckendale
patent: 2699852 (1955-01-01), Cost
patent: 2796941 (1957-06-01), Hill
patent: 3055471 (1962-09-01), Warn
patent: 3221574 (1965-12-01), Sampietro
patent: 3295625 (1967-01-01), Ordorica
patent: 3300002 (1967-01-01), Roper
patent: 3499503 (1970-03-01), Murray
patent: 3517573 (1970-06-01), Roper
patent: 3605523 (1971-09-01), O'Brien
patent: 3650349 (1972-03-01), Cleveland

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