Mark N Ranek

US Patent:

6889803, May 10, 2005

Filed:

Oct 11, 2002

Appl. No.:

10/269354

Inventors:

David Paul Schankin - Harper Woods MI, US
Mark Norman Ranek - Clarkston MI, US
Daniel Victor Sagady - Clarkston MI, US

Assignee:

American Axle & Manufacturing, Inc. - Detroit MI

International Classification:

F16F007/10

US Classification:

188379, 464180, 74574, 1882667

Abstract:

A damper mechanism for absorbing torsional vibrations in a rotating shaft. The damper mechanism includes a vibration absorbing mechanism and at least one actuator that is controllable to affect the torsional vibration absorbing characteristics of the vibration absorbing mechanism.

US Patent:

6907774, Jun 21, 2005

Filed:

Sep 2, 2004

Appl. No.:

10/932715

Inventors:

Donald Joseph Kurecka - Rochester Hills MI, US
Mark Norman Ranek - Clarkston MI, US
David Paul Schankin - Harper Woods MI, US
Zhaohui Sun - Rochester Hills MI, US

Assignee:

American Axle & Manufacturing, Inc. - Detroit MI

International Classification:

G01M019/00

US Classification:

731181

Abstract:

A method for evaluating energy transmission from an axle through a vehicle suspension system. The methodology employs a torsional actuator to apply input energy to the vehicle in a manner that mimics the energy that is generated by the axle during the operation of the vehicle so that both the driving load and the vibration induced by gearset motion variation are simulated. Since the energy input can be quantified and monitored, the same amount of torque can be applied during each test to permit the technician to fully comprehend differences in the designs of several axles on the transmission of noise and vibration.

US Patent:

7004291, Feb 28, 2006

Filed:

Oct 18, 2004

Appl. No.:

10/967813

Inventors:

David Paul Schankin - Harper Woods MI, US
Mark Norman Ranek - Clarkston MI, US
Daniel Victor Sagady - Clarkston MI, US

Assignee:

American Axle & Manufacturing, Inc. - Detroit MI

International Classification:

F16F 9/512

US Classification:

1882661, 188378, 464180

Abstract:

A method for damping torsional vibrations in a rotating shaft. The method includes coupling an actuator to a shaft; rotating the shaft; determining an amount of torsional vibration in the shaft; and controlling the actuator in response to the amount of torsional vibration and a rotational position of the shaft to damp the torsional vibration in the shaft.

US Patent:

20040069053, Apr 15, 2004

Filed:

Oct 11, 2002

Appl. No.:

10/269578

Inventors:

Donald Kurecka - Rochester Hills MI, US
Mark Ranek - Clarkston MI, US
David Schankin - Harper Woods MI, US
Zhaohui Sun - Rochester Hills MI, US

International Classification:

G01L003/26

US Classification:

073/114000

Abstract:

A method for evaluating energy transmission from an axle through a vehicle suspension system. The methodology employs a torsional actuator to apply input energy to the vehicle in a manner that mimics the energy that is generated by the axle during the operation of the vehicle so that both the driving load and the vibration induced by gearset motion variation are simulated. Since the energy input can be quantified and monitored, the same amount of torque can be applied during each test to permit the technician to fully comprehend differences in the designs of several axles on the transmission of noise and vibration.