Motor vehicles – Having four wheels driven – With manually operated means for disengaging drive to one or...
Patent
1980-11-13
1984-06-05
Pekar, John A.
Motor vehicles
Having four wheels driven
With manually operated means for disengaging drive to one or...
B60K 1734
Patent
active
044523319
ABSTRACT:
A vehicle axle for use in a vehicle having both two-wheel drive and four-wheel drive operating modes. The vehicle axle includes a pair of flanged axle shafts interconnected through an axle differential. One of the shafts has inner and outer sections which can be selectively coupled and uncoupled through a shiftable clutch collar to obtain four-wheel drive mode of operation or two-wheel drive mode of operation, respectively. The shifting of the clutch collar is effected by a vacuum motor which is responsive to a control signal to cause the collar to shift between positions for mode selection. The vacuum motor has a flexural diaphragm whose displacements are transmitted through linkage to the clutch collar to effect its shifting. In the two-wheel drive operating mode, the outer section of the axle shaft is not coupled to the inner section and rotates freely under the influence of its associated wheel. The inner section of the axle shaft, the axle differential, and the other axle shaft all rotate under the influence of the opposite wheel. In the four-wheel drive operating mode, the shaft sections are coupled for cooperative rotation of the wheels through the axle differential.
REFERENCES:
patent: 2770150 (1956-11-01), Culverwell et al.
patent: 3058558 (1962-10-01), Hawk
patent: 3283298 (1966-11-01), Kaiser
patent: 4271722 (1981-06-01), Campbell
patent: 4341281 (1982-07-01), Nagy
Grabowski Robert C.
Lunn Royston C.
MacAfee J. Edwin
Renneker Dennis N.
Winkler John M.
American Motors Corporation
Pekar John A.
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