Patent
Offset transfer case
Larry A. Pritchard,Parvinder Ahluwalia,James S. Brissenden,John D. Zalewski +3 more
- 31 Mar 1997
27
TL;DR: In this paper, a transfer case for a four-wheel drive vehicle with an input shaft (44) supported for rotation about a first rotary axis, a first output shaft (32), a second output shaft(42), and a torque transfer arrangement (48) for delivering drive torque from the input shaft to each of the first and second outputs shafts.
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Abstract: A transfer case (20) for use in a four-wheel drive vehicle is disclosed. The transfer case (20) has an input shaft (44) supported for rotation about a first rotary axis, a first output shaft (32) supported for rotation about a second rotary axis, a second output shaft (42) supported for rotation about a third rotary axis, and a torque transfer arrangement (48) for delivering drive torque from the input shaft (44) to each of the first and second output shafts.
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Citations
Patent
Two-speed transfer case with ball-ramp clutch and single motor activator/shift system
Randolph C. Williams,Hemant S. Suthar,Aaron Ronk +2 more
- 29 Nov 2004
TL;DR: In this paper, a transfer case is provided with a range unit, an interaxle differential, a clutch assembly and a power-operated actuation mechanism, which includes a range actuator assembly, a ball-ramp clutch actuator and a motor assembly.
56
Patent
Transfer case with synchronizer clutch
Ralph J. Spitale
- 07 May 2002
TL;DR: In this paper, a transfer case for a vehicle that allows shifting between AWD and two-wheel drive at any vehicle speed is presented, which includes a center differential employing pinion and sun gears that allow a front drive shaft and a rear drive shaft to turn at different speeds to provide the allwheel drive function.
36
Patent
On-demand four-wheel drive transmission
David Acorn Cottage Brown,Alan P. Zajac +1 more
- 04 Feb 1998
TL;DR: In this paper, a transmission for a four-wheel drive vehicle having a multi-speed geartrain and power transfer mechanism incorporated into a common housing assembly is presented. But the mainshaft can be selectively coupled to the power transmission mechanism for establishing two alternative power transmission routes.
28
Patent
Full-time all-wheel drive power take-off unit for motor vehicle
Thomas C. Bowen,Fred C. Porter +1 more
- 22 Mar 2002
TL;DR: In this paper, a full-time all-wheel drive system for a motor vehicle equipped with a transversely mounted engine and transaxle includes a power take-off unit.
28
Patent
Electronic Locking Differential
Jacob M. Povirk,John R. Saieg,Gary M. Pietrzyk +2 more
- 21 Jul 2010
TL;DR: In this paper, a differential mechanism includes a case, a gear rotating about an axis, a lock ring held against rotation relative to the case, and an electromagnetic coil that is displaced axially when energized, pivoting the lever, engaging the lock ring with the side gear, and preventing the gear from rotating relative to a case.
26
References
Patent
Power transfer system for a four-wheel drive vehicle
Robert J. Wilson,David Sperduti,Richard E. Eastman,Randy W. Adler,Joseph A. Winks +4 more
- 09 Mar 1993
TL;DR: In this article, a power transfer system for a four-wheel drive vehicle is presented, which allows the operator to choose between operation in two-wheel and part-time fourwheel drive modes or an "on-demand" 4WD mode.
97
Patent
Full-time transfer case with synchronized dual planetary gear reduction unit
Robert J. Wilson,David Sperduti +1 more
- 13 Feb 1996
TL;DR: In this paper, a power transfer system for a four-wheel drive vehicle with a dual-planetary gear reduction unit and a synchronized range shift mechanism is presented for permitting the vehicle operator to shift on-the-fly for establishing full-time and part-time high-range and low-range 4WD modes.
86
Patent
Full-time transfer case with syncronized range shift arrangement
Thomas C. Bowen
- 05 Jan 1998
TL;DR: In this paper, a power transfer system for a four-wheel drive vehicle is presented for permitting a vehicle operator to select between various full-time and part-time 4WD modes.
78
Patent
Transfer case limited slip planetary differential
Randolph C. Williams,Richard E. Eastman,S. K. Varma +2 more
- 23 Apr 1991
TL;DR: In this article, a transfer case for a four wheel drive vehicle providing a central shaft defining a first output concentrically surrounded by a forward high/low drive range gear set and an aft dual planetary inter-axle differential gear set is presented.
69
Patent
Transfer case with inter-axle dual-planetary differential
Richard E. Eastman,Randolph C. Williams +1 more
- 23 Dec 1985
TL;DR: A dual planetary differential for a two wheel/four wheel drive vehicle transfer case mechanism providing an unequal torque split between the front and rear wheels during its full-time four wheel drive operation is described in this paper.
56