Sanjeev K Varma

US Patent:

55822630, Dec 10, 1996

Filed:

Mar 27, 1995

Appl. No.:

8/410878

Inventors:

Sanjeev K. Varma - Syracuse NY
Randolph C. Williams - Weedsport NY
David Sperduti - Auburn NY
Robert J. Wilson - Warners NY
Edward J. Reagan - Skaneateles NY

Assignee:

New Venture Gear, Inc. - Troy MI

International Classification:

B60K 17354
B60K 2308

US Classification:

180247

Abstract:

The present invention is directed to a power transfer system of the type having a transfer case incorporated into the driveline of a full-time four-wheel drive vehicle. The transfer case includes an inter-axle differential for normally delivering drive torque to all four wheels so as to establish a full-time drive mode of operation. In addition, the transfer mechanism is equipped with a clutch assembly for controlling speed differentiation across the inter-axle differential and selectively varying the distribution ratio of the drive torque transmitted to the front and rear wheels. The transfer mechanism is also equipped with a rotary actuator and a drive mechanism for actuating the clutch assembly. The power transfer system further includes sensors for detecting various dynamic and operational characteristics of the vehicle and generating sensor input signals indicative thereof. A controller is provided for processing the input signals and controlling actuation of the rotary actuator in response thereto.

US Patent:

56559860, Aug 12, 1997

Filed:

Feb 13, 1996

Appl. No.:

8/596874

Inventors:

Robert J. Wilson - Warners NY
Randolph C. Williams - Weedsport NY
John D. Zalewski - Liverpool NY
Sanjeev K. Varma - Syracuse NY

International Classification:

B60K 1734

US Classification:

475204

Abstract:

A power transfer system is disclosed for a four-wheel drive vehicle operable for permitting a vehicle operator to select between various full-time and part-time four-wheel drive modes. The power transfer system includes a transfer case equipped with a single-planetary gear reduction unit and a synchronized range shift mechanism operable for permitting the vehicle operator to shift on-the-fly for establishing full-time and part-time high-range and low-range four-wheel drive modes. The transfer case is also equipped with an electronically-controlled slip limiting/torque biasing arrangement including an interaxle differential and a transfer clutch operable for controlling the magnitude of speed differentiation and torque biasing across the interaxle differential.

US Patent:

55973698, Jan 28, 1997

Filed:

Sep 12, 1994

Appl. No.:

8/304279

Inventors:

James S. Brissenden - Baldwinsville NY
Robert J. Wilson - Warners NY
Sanjeev K. Varma - Syracuse NY

Assignee:

New Venture Gear, Inc. - Troy MI

International Classification:

F16H 4826

US Classification:

475 89

Abstract:

A transfer case for a four-wheel drive vehicle adapted to provide two- to four-wheel drive on-demand in the high range or four-wheel drive in the low range. The transfer case includes an input shaft coupled to the sun gear of a planetary gear set, a main drive shaft, a first output and a second output. Provided in fixed association with the main drive shaft is a viscous fluid coupling chamber, and associated with the chamber is a drive sprocket. A range clutch sleeve and locking clutch assembly is slidably disposed on the main drive shaft between the planetary gear set and the rotary member for selectively providing two- to four-wheel on-demand high range power, neutral, and four-wheel drive low range power. Inner and outer relatively rotational drum housings surround the aft end of the main drive shaft for defining an annular viscous fluid coupling chamber therebetween. The inner drum is splined to the main drive shaft for rotation with that shaft while the outer drum is fixedly connected with the rotary member for providing torque to the second output.

US Patent:

46500286, Mar 17, 1987

Filed:

Feb 3, 1986

Appl. No.:

6/824914

Inventors:

Richard E. Eastman - Central Square NY
Sanjeev K. Varma - Syracuse NY

Assignee:

Chrysler Motors Corporation - Highland Park MI

International Classification:

B60K 1734

US Classification:

80233

Abstract:

A viscous fluid rear axle coupling apparatus for a front engine vehicle having a front transaxle drivingly interconnected to its front pair of wheels. The viscous coupling apparatus includes power transfer means adapted to convert the rotation of the vehicle's longitudinal propeller shaft into rotation of an outer drum of the apparatus about a transverse axis. The outer drum concentrically surrounds a pair of coaxial right and left inner drums enclosed in a housing chamber filled with viscous fluid. Each inner drum is drivingly connected to respective right and left rear wheel output shafts extending transversely outboard therefrom. Each inner drum has a set of inner plates interleaved with a single set of outer plates of the outer drum. The apparatus functions as an interaxle and limited slip differential during four wheel drive as well as a conventional differential allowing the rear wheels to rotate different amounts during its two wheel and on-demand four wheel drive modes.

Address:

1280 Tulberry Cir, Rochester, MI 48306

Phone:

2486528586

VIN:

3FAHP0CG0CR301045

Make:

FORD

Model:

FUSION

Year:

2012