DAVID JOHN WADAS
Dentist in Kalamazoo, MI

6307376, Oct 23, 2001

Dec 23, 1998

9/219029

Randy Alexander - Elkhart IN
David L. Wadas - Kalamazoo MI
Yei Dei Wang - Kalamazoo MI

Eaton Corporation - Cleveland OH

H03K 301

324388

An improved system and method for detecting solenoid-related faults in a solenoid-controlled actuator assembly. The system includes a processing circuit which controls a solenoid driver circuit for energizing and de-energizing the solenoid, a current sense circuit for sensing the current in the solenoid, and a power supply switching circuit for selectively connecting and disconnecting a supply voltage from the solenoid driver circuit. The processing circuit implements fault detection logic wherein the processing circuit senses the current in the solenoid and, if the sensed current exceeds a predetermined current value for a predetermined time period, disconnects the supply voltage from the solenoid driver circuit and measures the rate of voltage decay in the solenoid driver circuit to determine if an open circuit fault or a short circuit fault exists.

5673592, Oct 7, 1997

Apr 2, 1996

8/626591

Michael J. Huggins - Kalamazoo MI
Joseph D. Reynolds - Climax MI
David L. Wadas - Kalamazoo MI
Sharon L. Gualtieri - Schoolcraft MI

Eaton Corporation - Cleveland OH

F16H 5910, F16H 5946, F16H 6116

74336R

A manually shifted, range-type compound transmission (110) is provided with enhanced automatic range shifting. A controller (222) receives input signals indicative of shift lever position in the shift pattern (low range/high range) and of vehicle speed (OS) and automatically commands range shifts as a function of both system parameters.

5970810, Oct 26, 1999

Apr 1, 1998

9/053181

David L. Wadas - Kalamazoo MI

Eaton Corporation - Cleveland OH

F16H 5900

74335

A control system for controlling splitter jaw clutch (88) engagement and disengagement forces during a splitter section (16B) shift. The splitter section is shifted by a variable force splitter actuator (142) and is preferably capable of asserting at least a low, medium and high force to the splitter jaw clutch members.

5974906, Nov 2, 1999

Apr 1, 1998

9/053091

Alan C. Stine - Kalamazoo MI
David L. Wadas - Kalamazoo MI
Alan R. Davis - Plainwell MI

Eaton Corporation - Cleveland OH

F16H 6100

74335

A control for controlling splitter clutch (88) engagement for compound shifts in a controller (48) assisted manually shifted splitter-type vehicular transmission system (10). The controller has logic rule for sensing an attempted compound shift of the splitter-type transmission (16) and will retain the splitter clutch in a disengaged condition (N) until engagement of a main transmission section (16A) ratio from main transmission section neutral is sensed.

6185494, Feb 6, 2001

Jun 19, 1998

9/100711

David L. Wadas - Kalamazoo MI

Eaton Corporation - Cleveland OH

G06F 700

701 51

A control for preventing damage to a vehicular driveline (10) during attempts to launch a vehicle from a stopped condition while engaged in an inappropriate start ratio. The control involves sensing engaged transmission ratio (GR) and vehicle speed (OS) to determine if the vehicle is being launched while the transmission is engaged in an inappropriate start ratio and, if such conditions are sensed, issuing command signals to the engine controller (36) to cause engine output torque to be limited to a predetermined value, preferably a value less than 50% of maximum engine output torque.

5743143, Apr 28, 1998

Aug 9, 1996

8/695052

Jeffrey L. Carpenter - Kalamazoo MI
Mark L. Lanting - Portage MI
Michael J. Huggins - Kalamazoo MI
David L. Wadas - Kalamazoo MI

Eaton Corporation - Cleveland OH

F16H 5904, F16H 6342, G01B 700

74335

A transmission shifting mechanism (10) and position sensor assembly. The shifting mechanism includes a member (32) of known flux-conducting or flux-insulating properties movable therewith, which will variably extend (42, 44, 46) into an electric coil (36), which is periodically charged and then allowed to discharge. The rate of discharge is variable with the position of the member in the coil and, thus, provides a signal indicative to mechanism condition (H, N, L).

5989155, Nov 23, 1999

Apr 1, 1998

9/053092

David L. Wadas - Kalamazoo MI
Sharon L. Gualtieri - Schoolcraft MI

Eaton Corporation - Cleveland OH

B60K 4104

477111

A control for enhanced manual shifting in a computer (48) -assisted vehicular compound transmission having a main section (16A) shifted by a manually operated shift lever (31) and an engine fuel controller (36). Engine fueling will be in accordance with the operator-set throttle pedal position (THL) unless the control logic determines that such fueling will prevent acceptable engagement of a target gear ratio (GR. sub. T), in which case engine fueling will be automatically controlled to complete the shift.

5992267, Nov 30, 1999

Oct 26, 1998

9/178346

Gerard F. Smith - Kalamazoo MI
Michael J. Huggins - Kalamazoo MI
Alan C. Stine - Kalamazoo MI
David L. Wadas - Kalamazoo MI

Eaton Corporation - Cleveland OH

F16H 5908

74745

A robust control (10) for a pressurized-fluid-operated, three-position shift actuator piston assembly (12). The system requires only a single controlled source of pressurized fluid (44) to provide movement to and retention in a selected one of three axially displaced positions (D, N, OD). A solenoid-controlled valve (42) is controlled by pulse width modulation. Current applied to the solenoid coil is controlled (46), voltage (V) applied to the solenoid coil is sensed and used as a control parameter and/or a relatively light detent (48, 50) biases the assembly to a neutral (N) position to provide a robust control.

6220219, Apr 24, 2001

Feb 15, 2000

9/504426

David L. Wadas - Kalamazoo MI
James M. Walker - Kalamazoo MI
Yei Dei Wang - Kalamazoo MI
Sharon L. Gualtieri - Schoolcraft MI

Eaton Corporation - Cleveland OH

F02D 4114

123352

An improved control method/system for controlling engine speed (ES) of an electronically controlled engine (12) communicating over an industry standard data link. If the difference between engine speed and target engine speed exceeds a reference value ((ES-ES. sub. TARGET)>REF?), then the engine is commanded to operate in a torque control mode or a speed- and torque-limiting mode (64).

5984831, Nov 16, 1999

Apr 1, 1998

9/053093

David L. Wadas - Kalamazoo MI
Thomas A. Genise - Dearborn MI

Eaton Corporation - Cleveland OH

B60K 4108

477111

A control system for controlling jaw clutch (88) engagement for completing upshifts. The synchronous window ((OS*GR. sub. T). +-. offset) for commanding jaw clutch engagement is increased upon sensing relative great vehicle deceleration (dOS/dt<REF. sub. 1) or relatively great vehicle acceleration and relative small engine deceleration (dOS/dt<REF. sub. 1) and (dES/dt>REF. sub. 2).