David R Weilant

6830142, Dec 14, 2004

Dec 19, 2002

10/324238

David Robert Weilant - Muncie IN

Borgwarner, Inc. - Auburn Hills MI

F16D 1900

192 8492, 192 6991, 192 697, 180247

A transfer case for a vehicle having two-wheel drive and four-wheel drive operating modes operatively established by a drive transfer mechanism that is selectively employed to interconnect a main power drive shaft construction for the drive of a first set of wheels with an auxiliary drive shaft for the drive of a second set of wheels. The drive transfer mechanism includes a clutch assembly package comprising a control rod supported for movement in a direction coaxial to the longitudinal axis of the auxiliary drive shaft. The clutch assembly includes a clutch collar supported within the auxiliary drive shaft on the control rod for movement therewith to alternately connect and disconnect the power shaft with the auxiliary drive shaft. For multi-ratio case operation, the power shaft construction may have an input and output power shaft sections that are selectively interconnected by a planetary gear set and a speed shift collar. The shift collar is shifted by a second actuator that includes a second control rod supported for rectilinear movement along a longitudinal axis may be parallel to the longitudinal axis of the auxiliary drive shaft.

6935475, Aug 30, 2005

Mar 28, 2003

10/401807

David R. Weilant - Muncie IN, US

BorgWarner, Inc. - Auburn Hills MI

F16D027/112

192 35, 192 847, 180247

An electromagnetic clutch for motor vehicle drive line applications includes a friction clutch pack, a ball ramp actuator and an electromagnetic coil. The ball ramp actuator includes a pair of circular members having opposed pairs of arcuate recesses receiving load transferring members and a torsion spring which provides a restoring force to return the circular members to their center, disengaged positions. Improved clutch control, particularly during disengagment, is achieved by this ball ramp actuator configuration.

6983673, Jan 10, 2006

Feb 28, 2003

10/377021

Peter J. Bellich - Utica MI, US
Bryan D. McIntyre - St. Clair Shores MI, US
Ray F. Hamilton - Novi MI, US
John H. Price - Muncie IN, US
David R. Weilant - Muncie IN, US
Ivan C. Poor - Muncie IN, US
Jim Sells - Selma IN, US

BorgWarner Inc. - Auburn Hills MI

F16H 57/02

74606R, 464162

A transfer case for AWD/4WD vehicle that employs a bushing positioned within a transfer case housing. The bushing is formed to the housing when the housing is cast. The bushing includes one or more axial notches formed in an outer surface of the bushing that fill with the housing metal during the casting process that prevents the bushing from rotating in response to a load from a slip yoke. A helical groove is formed in the inner surface of the bushing and a slot is formed through a housing wall along the bushing that allows lubricant from within the housing to flow through the bushing.

7070032, Jul 4, 2006

May 20, 2004

10/850029

David Robert Weilant - Muncie IN, US

BorgWarner Inc. - Auburn Hills MI

F16D 27/00

192 328, 192 215

A hydrodynamic coupling apparatus () for transmitting torque between driving and driven elements includes an input shaft (), a first end () of which is rotatably supported in a case () and a second end () of which is connectable to a torque generator (). A hydrodynamic clutch () is connected to the first end () of the input shaft () and includes an impeller () and a turbine () enclosed in a clutch housing (). The impeller () is fixed to the first end () of the input shaft (), and the turbine () is rotatably supported adjacent the impeller (). Both the impeller () and the turbine () are immersed in magnetorheological fluid (). An electromagnetic field generator () is supported adjacent the clutch housing () and is operable to generate a magnetic field in the magnetorheological fluid (). The field generator is adjustable to adjust the density of the magnetic field flux and, consequently, the amount of torque transferred from the impeller () to the turbine ().

7395910, Jul 8, 2008

Oct 6, 2005

11/244843

David R. Weilant - Muncie IN, US

BorgWarner Inc. - Auburn Hills MI

F16D 27/115
F16D 13/75

192 847, 192 8491, 192110 R

The present invention allows for the pack clearance of a clutch pack to be adjusted during the manufacturing process to the proper amount, even if there are variations in friction disc thickness and steel disc thickness. The present invention is an electromagnetic clutch having an adjustable pack clearance arrangement, comprising an output shaft, a pressure plate, and a clutch pack actuated by the pressure plate. The pressure plate and the clutch pack are splined to the output shaft. There is also a clutch housing splined to the clutch pack, which also receives force from the clutch pack when the pressure plate is applied. The pressure plate defines a pack clearance for the clutch pack, and the pack clearance is adjustable by a pack clearance adjusting arrangement.

20040180747, Sep 16, 2004

Mar 14, 2003

10/389323

David Weilant - Muncie IN, US
Wayne Wyant - Alexandria IN, US

F16H048/06

475/154000

A motor vehicle transfer case includes an input shaft and an electromagnetic brake for retarding rotation of the input shaft. An electromagnetic coil is mounted to the front of the transfer case about the input shaft. An armature plate is secured to the input shaft adjacent the electromagnetic coil. Energization of the coil retards rotation of the input shaft and cancels neutral drag torque from the transmission thereby eliminating relative rotation between the shifting elements of the transfer case and providing smoother shifts.

58457542, Dec 8, 1998

Nov 25, 1996

8/756199

David R. Weilant - Muncie IN

Borg-Warner Automotive, Inc. - Sterling Heights MI

F16D 1100

192 5335

A shift synchronizer for a motor vehicle transfer case includes a pair of blocker rings disposed on opposite sides of a plurality of circumferentially arrayed struts. The blocker rings include respective symmetrically disposed cone clutch faces. The clutch faces abut complementarily configured surfaces on the input shaft and the planet carrier of a planetary gear speed reduction assembly. The struts are spring biased radially inwardly by circumferentially extending tension springs and are received upon and detentingly engage a shift sleeve. The shift sleeve is splined to the transfer case output shaft. As the shift sleeve is translated axially toward either the input shaft or the planet carrier, the cone clutch face of the respective blocker ring is urged into contact with its adjacent complementarily configured clutch surface thereby frictionally engaging the output shaft with the input shaft or the planet carrier thereby causing such components to achieve synchronism.

55847765, Dec 17, 1996

Mar 24, 1995

8/409774

David R. Weilant - Muncie IN
Jack F. Engle - Muncie IN

Borg-Warner Automotive, Inc. - Sterling Heights MI

B60K 17342

475213

A transfer case includes a clutch assembly having a disc pack clutch, a cone clutch and a lockup hub or collar. All three clutch components are disposed in mechanical parallel between the primary transfer case shaft and the secondary output. The disc pack clutch includes a plurality of interleaved discs and an electromagnetic operator which effects compression of the disc pack to transfer torque from the primary transfer case output shaft to a chain drive sprocket, through a chain, to a secondary output shaft. The cone clutch is disposed adjacent the disc pack and is also actuated by the electromagnetic operator. The cone clutch includes a conical drive member driven by the primary transfer case output shaft. A conical driven member provides torque to the drive chain and, in turn, to the secondary output shaft. Preferably, the driven cone member is integrally formed with the chain drive sprocket.