DR. RICHARD M. THOMAS, D.C.
Chiropractic at Wilmington Ave, Dayton, OH

6533369, Mar 18, 2003

Mar 30, 2001

09/821970

Ernst S. Baumgartner - Dayton OH
Bryan Peter Riddiford - Dayton OH
Schuyler S. Shaw - Dayton OH
John Benjamin Hageman - Vandalia OH
Richard James Thomas - Kettering OH

Delphi Technologies, Inc. - Troy MI

B60T 860

303155, 3031134, 3031152, 303 11

A brake system and method of controlling the system are disclosed. The system provides secondary hydraulic braking in a de-energized mode. The system includes a wheel brake associated with wheels of a vehicle typically at each corner of the vehicle. The wheel brake typically includes a caliper or drum for deceleration of the vehicle. The system includes a master cylinder in fluid communication with the wheel brake. In the de-energized mode, the master cylinder operates the wheel brake. A solenoid isolation valve decouples the master cylinder from the wheel brake when the system is in a normal, i. e. , an energized, mode. As such, the master cylinder is isolated from the wheel brake and is prevented from operating the wheel brake. Alternatively, in the de-energized mode, the isolation valve couples the master cylinder with the wheel brake to provide the secondary hydraulic braking. The system includes an actuator assembly for operation of the wheel brake independent of the master cylinder when the system is in the energized operational mode.

6709073, Mar 23, 2004

Nov 1, 2001

10/004240

Bryan P. Riddiford - Dayton OH
Richard J. Thomas - Kettering OH

Delphi Technologies, Inc. - Troy MI

B60T 842

3031152, 303162

A force generating apparatus for providing a force to a moving element based upon receipt of an electrical force signal includes a force applying element coupled to the moving element for applying the force to the moving element and an actuator coupled to the force applying element for actuation thereof in response to receiving the electrical force signal. The force generating apparatus further includes a controller for determining when the force apply element is in an apply mode, determining the elapsed time until reversion to a normal mode, determining when the elapsed time is greater than a predefined minimum, modifying the value of the electrical force signal sent to the actuator, and modifying a stored control parameter.

6913327, Jul 5, 2005

Jun 18, 2003

10/464074

Richard James Thomas - Kettering OH, US

Delphi Technologies, Inc. - Troy MI

B60T008/60

303155, 303 20, 188156

The present invention provides a method and control scheme to operate a motor-driven actuator. This includes determining actuator force on an external device, determining a command force, and monitoring actuator position. A determination is made whether to operate in a force-control mode or a position-control mode. Both the force-control mode and the position-control mode employ a common feedback control method (e. g. PI or PID). The system operates the actuator in the force-control mode, using actuator force as feedback to the control scheme when the controller determines that the force sensor is operating in its linear range. When the force sensor is operating outside or near the limits of its linear range, the control scheme determines a pseudo-force, comprising estimated force based upon measured position. The pseudo-force is input to the common feedback control method to control the actuator.

7499785, Mar 3, 2009

Oct 22, 2004

10/971838

Bryan P. Riddiford - Dayton OH, US
Michael C. Pfeil - South Charleston OH, US
Richard J. Thomas - Kettering OH, US

Delphi Technologies, Inc. - Troy MI

B60T 8/32

701 70, 303121, 303155, 303156, 303152, 3031135, 701 96, 701 53, 340467

A method for balancing brake force is disclosed. The method includes determining whether a deceleration value reaches a first deceleration threshold in response to a braking event and determining brake condition and vehicle motion. Based on brake condition and vehicle motion determination and the first deceleration threshold determination, the method determines whether the deceleration value reaches a second deceleration threshold, and applies threshold balancing when the second deceleration threshold is reached.

7018001, Mar 28, 2006

Feb 22, 2002

10/081122

Bryan P. Riddiford - Dayton OH, US
Richard J. Thomas - Kettering OH, US

Delphi Technologies, Inc. - Troy MI

B60T 8/34

3031134, 3031152

The problem of maintaining fluid modulus during a fast mode release of fluid pressure in a force generating apparatus having a force generating actuator fluidically coupled to a force generating device is solved by limiting the rate at which the actuator can reduce fluid pressure in an apply chamber of the actuator to a rate low enough to preclude a change in modulus of the fluid during the fast mode release.

2005003, Feb 10, 2005

Aug 8, 2003

10/637398

Richard Thomas - Kettering OH, US

H04L027/06

375343000

A dual signal correlation system including a component to be monitored and a sensor system for monitoring the status of the component. The sensor system provides at least first and second data signals relating to the status of the component. The dual signal correlation system further includes a processing system for receiving, monitoring and selectively modifying the first and second data signals of the sensor system. The processing system compares a current value for the first data signal to a current value for the second data signal, and wherein if the current value for the first data signal is determined not to be correlated or is determined to be uncorrelated with the current value for the second data signal, a previously measured value for the first data signal, instead of the current value for the first data signal, is used for subsequent processing.