Russell E Monahan

US Patent:

6394247, May 28, 2002

Filed:

May 31, 2000

Appl. No.:

09/583838

Inventors:

Russell E. Monahan - Ann Arbor MI
Robert Frayer - Gregory MI
Jonathan M. Adler - Dexter MI
Thomas W. Houtman - Ann Arbor MI
Randall K. King - Ann Arbor MI

Assignee:

NTN Corporation - Osaka

International Classification:

F16D 1312

US Classification:

192 41S, 192 81 C, 192 848

Abstract:

An over-running cluch pulley in which a pulley sheave and hub cooperate to define a composite inner cylindrical surface and in which a mechanism adds compliance to the system in order to lessen the abruptness of lock-on in the system.

US Patent:

6394248, May 28, 2002

Filed:

May 31, 2000

Appl. No.:

09/583844

Inventors:

Russell E. Monahan - Ann Arbor MI
Robert Frayer - Gregory MI
Jonathan M. Adler - Dexter MI
Thomas W. Houtman - Ann Arbor MI
Randall K. King - Southfield MI

Assignee:

NTN Corporation - Osaka

International Classification:

F16D 4120

US Classification:

192 41S, 192 5561, 192 81 C

Abstract:

An over-running clutch pulley in which an input hub and output hub are compliantly coupled to soften the transition between the unlocked and locked state of the over-running clutch pulley.

US Patent:

6481548, Nov 19, 2002

Filed:

Jul 25, 2001

Appl. No.:

09/915123

Inventors:

Russell E. Monahan - Ann Arbor MI
Shiro Goto - Ann Arbor MI

Assignee:

NTN Corporation - Osaka

International Classification:

F16D 1100

US Classification:

192 38, 192 35, 192 483, 180249

Abstract:

A two-way clutch for allowing limited torque to be transferred until a roller clutch mechanism is forced to an engaged position. The present invention includes a roller clutch, with a torque generating device mounted thereon, including an actuator for producing an axial force onto a clutch pack. A torque transfer device is disposed between the torque generating device and the roller clutch. The torque transfer device is adapted to receive torque from the torque generating device and to transfer torque to the roller clutch. When a predetermined level of torque is produced by the torque generating device, the torque transfer device moves the roller clutch into an engaged position.

US Patent:

6595337, Jul 22, 2003

Filed:

Jul 18, 2001

Appl. No.:

09/908402

Inventors:

Shiro Goto - Ann Arbor MI
Russell E. Monahan - Ann Arbor MI

Assignee:

NTN Corporation - Osaka

International Classification:

F16D 27108

US Classification:

192 848, 192 38, 192 40, 475239

Abstract:

An over-running clutch assembly comprises an outer race having a cylindrical inner surface and an inner race having a cammed outer surface coaxial with the cylindrical inner surface and defining a gap therebetween and a roller clutch disposed within the gap; a biasing element to bias the roller clutch to a disengaged position; and an actuator to selectively overcome the biasing element to engage the roller clutch and lock the outer race and inner race and prevent relative rotation between the outer race and inner race.

US Patent:

6679367, Jan 20, 2004

Filed:

Jun 11, 2002

Appl. No.:

10/167026

Inventors:

Richard D. Baker - Ypsilanti MI
Russell E. Monahan - Ann Arbor MI
Tom Houtman - Ann Arbor MI
Shiro Goto - Ann Arbor MI

Assignee:

NTN Corporation - Osaka

International Classification:

B60K 4126

US Classification:

1922193

Abstract:

An over-running clutch assembly for an automotive transmission comprises an outer race having a cylindrical inner surface and an inner race engaged with a drop shaft of the transmission and having a cammed outer surface coaxial with the cylindrical inner surface and defining a gap therebetween and a roller clutch disposed within the gap; a biasing element to bias the roller clutch to a disengaged position; and an actuator to selectively overcome the biasing element to engage the roller clutch and lock the outer race and inner race and prevent relative rotation between the outer race and inner race, thereby preventing rotation of the drop shaft and movement of the automobile.

US Patent:

6684992, Feb 3, 2004

Filed:

Jul 8, 2002

Appl. No.:

10/190909

Inventors:

Shiro Goto - Ann Arbor MI
Russell E. Monahan - Ann Arbor MI

Assignee:

NTN Corporation - Osaka

International Classification:

B60K 2308

US Classification:

192 35, 192 44, 192 848, 192 38

Abstract:

A clutch assembly comprises an outer race and an inner race defining a gap between the inner and outer races. One of the inner and outer race includes a plurality of cam surfaces, and one of the inner and outer races is tapered toward a first end of the clutch. A plurality of tapered rolling elements are positioned between the races along the cam surfaces such that the rolling elements wedge between the inner and outer races to prevent relative rotation. An axially moveable retainer interconnects the rolling elements and is biased toward the first end of the clutch, wherein each of the rolling elements wedge between the inner and outer races. An actuator selectively moves the retainer axially away from the first end such that the tapered rolling elements no longer wedge between the inner and outer races, thereby allowing relative rotational movement.

US Patent:

6691846, Feb 17, 2004

Filed:

Nov 29, 2001

Appl. No.:

09/997583

Inventors:

Barry C. Titus - Chelsea MI
Randall King - Jackson MI
Jared I. Taketa - Livonia MI
Russell E. Monahan - Ann Arbor MI

Assignee:

NTN Corporation - Osaka

International Classification:

F16D 1312

US Classification:

192 41S, 192 75, 192109 R, 192 81 C

Abstract:

The over-running clutch pulley of a preferred embodiment of the invention includes a sheave member, a hub member located substantially concentrically within the sheave member, a spring member, and a stop surface, which cooperate to rotationally engage an input device and an output device. The sheave member preferably includes a sheave input section adapted to the engage the input device, and a sheave clutch section defining a sheave clutch surface. Similarly, the hub member preferably includes a hub output section adapted to engage the output device, and a hub clutch section defining a hub clutch surface. The stop surface functions to engage the spring member and to transfer some torque from the sheave member to the hub member during the acceleration of the sheave member in the first rotational direction relative the hub member.

US Patent:

6702708, Mar 9, 2004

Filed:

Apr 24, 2003

Appl. No.:

10/422590

Inventors:

Shiro Goto - Ann Arbor MI
Russell E. Monahan - Ann Arbor MI

Assignee:

NTN Corporation - Osaka

International Classification:

F16H 4820

US Classification:

475231, 475239, 192 848

Abstract:

A driveline assembly includes first and second axle half-shafts having first and second side gears mounted thereon, an axle housing, a differential case rotatably mounted within the axle housing, a least two spider gears rotatably mounted within the differential case, and a clutch assembly coupled to the differential housing and one of the axle half-shafts and including an outer race having a cylindrical inner surface and an inner race having a cammed outer surface coaxial with the cylindrical inner surface and defining a gap therebetween and a roller clutch disposed within the gap; a biasing element to bias the roller clutch to a disengaged position; and an actuator to selectively overcome the biasing element to engage the roller clutch and lock the outer race and inner race and prevent relative rotation between the outer race and inner race.