James Yao Gleasman

US Patent:

6748817, Jun 15, 2004

Filed:

Aug 28, 2002

Appl. No.:

10/229785

Inventors:

James A. Gleasman - Rochester NY
Keith E. Gleasman - Fairport NY
Vernon E. Gleasman - Pittsford NY

Assignee:

Torvec, Inc. - Pittsford NY

International Classification:

F16D 2710

US Classification:

741255, 74113, 74114

Abstract:

A transmission has only a single, minimal orbiter in which an input gear and an output gear, each being connected to separate input and output shafts, are interconnected through an orbiting cluster gear that meshes with only the input and output gears. The cluster gear is carried by a web that is itself rotated by a hydraulic control motor through a first clutch. When rotation of the web is prevented, rotation of the input gear produces rotation of the output gear at a predetermined reduction of the input drive, this gear reduction being continuously diminished proportional to the speed of rotation of the web in a first direction. When the vehicle reaches highway speeds, the control motor is disconnected and a second clutch is activated to connect a predetermined overdrive that is located between the engine drive and the transmission rather than being conventionally positioned between the transmission and the final output shaft.

US Patent:

7475617, Jan 13, 2009

Filed:

Jun 15, 2005

Appl. No.:

11/153112

Inventors:

James Y. Gleasman - Rochester NY, US
Keith E. Gleasman - Fairport NY, US
Matthew R. Wrona - Fairport NY, US

Assignee:

Torvec, Inc. - Rochester NY

International Classification:

F16H 37/04

US Classification:

74665B, 74665 GA

Abstract:

The transmission includes an orbital gear complex in combination with a variable hydraulic pump and motor. The input to the transmission is increased in speed by the orbital gearing such that, when the pump and motor are not operating, the orbiter is stationary, and the orbital gearing produces an overdrive condition. A gear reduction is accomplished by rotating the web with the web-rotating device, providing a high gear reduction. The pump and motor are preferably long-piston hydraulic machines with infinitely variable swash plates. The hydraulic machines preferably have wobblers stabilized by full gimbals and hold-down plates with elongated holes for the long pistons to eliminate possible impacts between the hold-down plates and the head ends of the long pistons when the swash-plates are at or near their maximum angle of inclination.

US Patent:

7540821, Jun 2, 2009

Filed:

Oct 27, 2006

Appl. No.:

11/553603

Inventors:

Keith E. Gleasman - Fairport NY, US
James Y. Gleasman - Rochester NY, US
Paul W. Suwijn - Pittsford NY, US

Assignee:

Torvec, Inc - Rochester NY

International Classification:

F16H 48/06
F16H 57/08
B26D 1/12

US Classification:

475227, 475344, 407 26

Abstract:

The compact, all-gear full-traction differential includes meshing pairs of side-gear worms and worm-wheel balance gears having a “hybrid” design. Preferably, the teeth of each side-gear worm have an involute profile but are cut with only plunge feed, while the teeth of the worm-wheel portions of the balance gears are helicoid worms having tip and root modifications made by a concave-shaped cutter. The side-gear worm teeth have a helix angle equal to or greater than 45 and significantly chamfered ends, and the gears are designed to provide a gear ratio between 1. 5:1 and 2. 5:1. The numbers of teeth in the spur-gear portion and worm-wheel portion of each balance gear and in each side-gear worm are all divisible by 2 or by 3, preferably by both 2 and 3.

US Patent:

7575534, Aug 18, 2009

Filed:

Dec 22, 2006

Appl. No.:

11/615532

Inventors:

James Y. Gleasman - Rochester NY, US
Keith E. Gleasman - Fairport NY, US
Donald Gabel - Rochester NY, US

Assignee:

Torvec, Inc. - Rochester NY

International Classification:

F16H 3/44

US Classification:

475317, 475319, 475325

Abstract:

The transmission includes a minimal-orbiter gear complex and a single infinitely-variable rotary control device. The minimal orbiter includes only a control gear and an output gear interconnected by the different gearing portions of at least one cluster gear supported by an orbiting web responsive to an input drive provided by a primary engine. The rotary control device may be any kind of apparatus that is capable of providing resistance torque that can match the torque of the primary engine to slow and stop the control gear of the orbital complex. In a preferred embodiment disclosed, the rotary control device is a hydraulic jack machine having a drive shaft connected to an adjustable swash plate that provides primary control of the flow of fluid through the machine.

US Patent:

7824289, Nov 2, 2010

Filed:

Oct 25, 2007

Appl. No.:

11/924022

Inventors:

Keith E. Gleasman - Fairport NY, US
James Y. Gleasman - Rochester NY, US
Donald Gabel - Rochester NY, US
Matthew R. Wrona - Fairport NY, US

Assignee:

Torvec, Inc. - Rochester NY

International Classification:

F16H 48/20
B62D 11/06

US Classification:

475 18, 475249

Abstract:

The differential steering drive for a tracked vehicle includes a drive differential interconnecting the drive shafts for the tracks and a steering differential for superimposing additive and subtractive rotations to the tracks for steering and pivot turning. In the preferred embodiment for high speed tracked vehicles, the drive differential is an all-gear no-clutch type limited-slip differential, and the steering differential is an unlimited-slip differential. The differentials are arranged to provide no-slip track operation traveling in straight paths or when steering so long as at least one track has traction. In another embodiment for pivot-turning slow-moving off-road vehicles, both the drive differential and the steering differential are all-gear no-clutch type limited-slip differentials. Further, both embodiments preferably include an additional left-side and an additional right-side all-gear no-clutch type limited-slip differential for dividing the torque delivered to a respective pair of drive axles associated with each track.

US Patent:

20080103011, May 1, 2008

Filed:

Oct 27, 2006

Appl. No.:

11/553592

Inventors:

Keith E. Gleasman - Fairport NY, US
James Y. Gleasman - Rochester NY, US
Donald Gabel - Rochester NY, US
Matthew R. Wrona - Fairport NY, US

Assignee:

TORVEC, INC. - Pittsford NY

International Classification:

F16H 48/06

US Classification:

475248

Abstract:

The differential steering drive for a vehicle includes a drive differential and a steering differential. The vehicle includes respective left and right driving traction elements, a propulsion engine with an engine crankshaft, and a steering wheel rotatable by an operator to indicate an intended direction of travel. At least one of the drive differential and the steering differential includes an all-gear limited slip differential. In another embodiment, both the drive differential and the steering differential include an all-gear limited slip differential.

US Patent:

20080153650, Jun 26, 2008

Filed:

Dec 20, 2007

Appl. No.:

11/960931

Inventors:

James Y. Gleasman - Rochester NY, US
Keith E. Gleasman - Fairport NY, US
Donald Gabel - Rochester NY, US

Assignee:

TORVEC, INC. - Rochester NY

International Classification:

F16H 48/06

US Classification:

475149

Abstract:

In the basic embodiment, the transmission includes (a) a minimal-orbiter gear complex having only a control gear and an output gear interconnected by the gearing portions of at least one cluster gear supported by an orbiting web responsive to an input drive provided by a primary engine and (b) a single, infinitely-variable rotary control device providing resistance torque to counter engine torque to slow and stop the control gear of the orbital complex. The rotary control device, which may be a hydraulic jack or an electrically braked magnetic wheel, provides no propelling motion but rather only provides a resistive torque. In a preferred embodiment for automotive use, the engine torque is split at all times between two mechanical paths. One path drives the web of a minimal orbiter gear set, and the other drives the sun gear of a single, standard planetary gear set.

US Patent:

20090077959, Mar 26, 2009

Filed:

Dec 4, 2008

Appl. No.:

12/328177

Inventors:

Matthew R. Wrona - Fairport NY, US
James A. Gleasman - Rochester NY, US
Keith E. Gleasman - Fairport NY, US

Assignee:

TORVEC, INC. - Rochester NY

International Classification:

F16D 31/02

US Classification:

60487

Abstract:

The transmission includes an orbital gear complex in combination with a variable hydraulic pump and motor. The input to the transmission is increased in speed by the orbital gearing such that, when the pump and motor are not operating, the orbiter is stationary, and the orbital gearing produces an overdrive condition. A gear reduction is accomplished by rotating the web with the web-rotating device, providing a high gear reduction. The pump and motor are preferably long-piston hydraulic machines with infinitely variable swash plates. The hydraulic machines preferably have wobblers stabilized by full gimbals and hold-down plates with elongated holes for the long pistons to eliminate possible impacts between the hold-down plates and the head ends of the long pistons when the swash-plates are at or near their maximum angle of inclination.