Weldon L. Phelps

Person

Dunlap, IL, US

People

Patents Grantslast 30 patents

Information Patent Grant
Solenoid driver circuit and diagnostics
- Patent number 5,438,489
- Issue date Aug 1, 1995
- Steven W. Judy
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Fault tolerant serial communications network
- Patent number 5,187,709
- Issue date Feb 16, 1993
- Caterpillar Inc.
- Gregory L. Williamson
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Electrical transmission control mechanism
- Patent number 4,930,366
- Issue date Jun 5, 1990
- Caterpillar Inc.
- Val G. Boucher
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Anti-spin control apparatus and method
- Patent number 4,745,552
- Issue date May 17, 1988
- Caterpillar Inc.
- Weldon L. Phelps
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Clutch brake steering control
- Patent number 4,702,358
- Issue date Oct 27, 1987
- Caterpillar Inc.
- James P. Mueller
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Dual current sensing driver circuit
- Patent number 4,661,766
- Issue date Apr 28, 1987
- Caterpillar Inc.
- John P. Hoffman
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Multiple threshold wheel slip control apparatus and method
- Patent number 4,521,856
- Issue date Jun 4, 1985
- Caterpillar Tractor Co.
- Weldon L. Phelps
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Pulse width modulated constant current servo driver
- Patent number 4,373,697
- Issue date Feb 15, 1983
- Caterpillar Tractor Co.
- Weldon L. Phelps
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Failsafe wheel slip control system and method of operating same
- Patent number 4,361,871
- Issue date Nov 30, 1982
- Caterpillar Tractor Co.
- Robert G. Miller
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Method and apparatus for controlling differentially driven wheel slip
- Patent number 4,344,139
- Issue date Aug 10, 1982
- Caterpillar Tractor Co.
- Robert G. Miller
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Electronic directional control circuit
- Patent number 4,178,518
- Issue date Dec 11, 1979
- Caterpillar Tractor Co.
- Weldon L. Phelps
- B66 - HOISTING LIFTING HAULING

Weldon L. Phelps

Person

Patents Grantslast 30 patents

Solenoid driver circuit and diagnostics

Fault tolerant serial communications network

Electrical transmission control mechanism

Anti-spin control apparatus and method

Clutch brake steering control

Dual current sensing driver circuit

Multiple threshold wheel slip control apparatus and method

Pulse width modulated constant current servo driver

Failsafe wheel slip control system and method of operating same

Method and apparatus for controlling differentially driven wheel slip

Electronic directional control circuit