David J. Wickham

Person

London, GB

People

Patents Grantslast 30 patents

Information Patent Grant
Electric actuators
- Patent number 4,760,895
- Issue date Aug 2, 1988
- Westinghouse Brake and Signal Company Limited
- David J. Wickham
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Electrically-controlled actuators
- Patent number 4,651,852
- Issue date Mar 24, 1987
- Westinghouse Brake and Signal Co. Ltd.
- David J. Wickham
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Electric actuators
- Patent number 4,649,329
- Issue date Mar 10, 1987
- Westinghouse Brake and Signal Co.
- David J. Wickham
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Actuator emergency operation
- Patent number 4,644,180
- Issue date Feb 17, 1987
- Westinghouse Brake and Signal Company, Ltd.
- David J. Wickham
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Control valve arrangement
- Patent number 4,571,008
- Issue date Feb 18, 1986
- Westinghouse Brake & Signal Company
- David J. Wickham
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Braking systems for railway
- Patent number 4,552,410
- Issue date Nov 12, 1985
- Westinghouse Brake & Signal Co.
- David J. Wickham
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Electric actuators
- Patent number 4,546,295
- Issue date Oct 8, 1985
- Westinghouse Brake & Signal
- David J. Wickham
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Electric actuators
- Patent number 4,546,298
- Issue date Oct 8, 1985
- Westinghouse Brake & Signal Co.
- David J. Wickham
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Combined BC pressure-maintaining valve and quick service bulb exhau...
- Patent number 4,493,511
- Issue date Jan 15, 1985
- Westinghouse Brake & Signal Co. Ltd.
- David J. Wickham
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Braking cylinder inlet valve arrangement in braking systems for rai...
- Patent number 4,492,412
- Issue date Jan 8, 1985
- Westinghouse Brake and Signal Company Limited
- David J. Wickham
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Interlock valve for railway braking system valve assembly
- Patent number 4,478,460
- Issue date Oct 23, 1984
- Westinghouse Brake & Signal Co. Ltd.
- David J. Wickham
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Empty/load brake control valve apparatus
- Patent number 4,364,609
- Issue date Dec 21, 1982
- Westinghouse Brake & Signal Co.
- David J. Wickham
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Rail vehicle braking apparatus
- Patent number 4,319,787
- Issue date Mar 16, 1982
- Westinghouse Brake and Signal Co. Limited
- David J. Wickham
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Train braking apparatus
- Patent number 4,264,110
- Issue date Apr 28, 1981
- Westinghouse Brake & Signal Co. Ltd.
- Jack Washbourn
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Continuous quick service valves for braking systems
- Patent number 4,206,949
- Issue date Jun 10, 1980
- Westinghouse Brake & Signal Co. Ltd.
- Clive A. Rathband
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Vehicle braking control apparatus
- Patent number 4,199,198
- Issue date Apr 22, 1980
- Westinghouse Brake & Signal Co. Ltd.
- David J. Wickham
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Continuous quick service apparatus for vehicle braking control
- Patent number 4,157,849
- Issue date Jun 12, 1979
- Westinghouse Brake and Signal Company Limited
- David J. Wickham
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Vehicle braking control valve apparatus for quick service operation
- Patent number 4,103,977
- Issue date Aug 1, 1978
- Westinghouse Brake & Signal Co. Ltd.
- David John Wickham
- B60 - VEHICLES IN GENERAL

David J. Wickham

Person

Patents Grantslast 30 patents

Electric actuators

Electrically-controlled actuators

Electric actuators

Actuator emergency operation

Control valve arrangement

Braking systems for railway

Electric actuators

Electric actuators

Combined BC pressure-maintaining valve and quick service bulb exhau...

Braking cylinder inlet valve arrangement in braking systems for rai...

Interlock valve for railway braking system valve assembly

Empty/load brake control valve apparatus

Rail vehicle braking apparatus

Train braking apparatus

Continuous quick service valves for braking systems

Vehicle braking control apparatus

Continuous quick service apparatus for vehicle braking control

Vehicle braking control valve apparatus for quick service operation