Douglas H. Clelford

Person

Shelton, CT, US

People

Patents Grantslast 30 patents

Information Patent Grant
Preventing augmenting vertical load induced oscillations in a helic...
- Patent number 4,741,501
- Issue date May 3, 1988
- United Technologies Corporation
- Douglas H. Clelford
- B64 - AIRCRAFT AVIATION COSMONAUTICS
Information Patent Grant
Oscillatory failure monitor
- Patent number 4,566,101
- Issue date Jan 21, 1986
- United Technologies Corporation
- Joseph P. Skonieczny
- G01 - MEASURING TESTING
Information Patent Grant
Automatic limiting of helicopter engine torque
- Patent number 4,564,908
- Issue date Jan 14, 1986
- United Technologies Corporation
- Douglas H. Clelford
- G05 - CONTROLLING REGULATING
Information Patent Grant
Maneuver-force gradient system
- Patent number 4,563,743
- Issue date Jan 7, 1986
- United Technologies Corporation
- Richard D. Murphy
- G05 - CONTROLLING REGULATING
Information Patent Grant
Aircraft short-term roll attitude retention system
- Patent number 4,500,967
- Issue date Feb 19, 1985
- United Technologies Corporation
- Richard D. Murphy
- G05 - CONTROLLING REGULATING
Information Patent Grant
Complementary commands in fail-operational, fail-safe multi-compute...
- Patent number 4,412,280
- Issue date Oct 25, 1983
- United Technologies Corporation
- Richard D. Murphy
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Helicopter force feel actuator automatic static null compensation
- Patent number 4,382,281
- Issue date May 3, 1983
- United Technologies Corporation
- Donald W. Fowler
- B64 - AIRCRAFT AVIATION COSMONAUTICS
Information Patent Grant
Helicopter attitude and airspeed acquisition and retention system
- Patent number 4,382,283
- Issue date May 3, 1983
- United Technologies Corporation
- Douglas H. Clelford
- G05 - CONTROLLING REGULATING
Information Patent Grant
Adaptive aircraft actuator fault detection
- Patent number 4,355,358
- Issue date Oct 19, 1982
- United Technologies Corporation
- Douglas H. Clelford
- G05 - CONTROLLING REGULATING
Information Patent Grant
Synchronized, fail-operational, fail-safe multi-computer control sy...
- Patent number 4,354,230
- Issue date Oct 12, 1982
- United Technologies Corporation
- Richard D. Murphy
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Sensor fault detection by activity monitoring
- Patent number 4,337,516
- Issue date Jun 29, 1982
- United Technologies Corporation
- Richard D. Murphy
- G05 - CONTROLLING REGULATING
Information Patent Grant
Force feel actuator with limited proportional/integral error feedback
- Patent number 4,313,165
- Issue date Jan 26, 1982
- United Technologies Corporation
- Douglas H. Clelford
- G05 - CONTROLLING REGULATING
Information Patent Grant
Force feel actuator fault detection with directional threshold
- Patent number 4,294,162
- Issue date Oct 13, 1981
- United Technologies Corporation
- Donald W. Fowler
- G05 - CONTROLLING REGULATING
Information Patent Grant
Selective disablement in fail-operational, fail-safe multi-computer...
- Patent number 4,270,168
- Issue date May 26, 1981
- United Technologies Corporation
- Richard D. Murphy
- G06 - COMPUTING CALCULATING COUNTING

Douglas H. Clelford

Person

Patents Grantslast 30 patents

Preventing augmenting vertical load induced oscillations in a helic...

Oscillatory failure monitor

Automatic limiting of helicopter engine torque

Maneuver-force gradient system

Aircraft short-term roll attitude retention system

Complementary commands in fail-operational, fail-safe multi-compute...

Helicopter force feel actuator automatic static null compensation

Helicopter attitude and airspeed acquisition and retention system

Adaptive aircraft actuator fault detection

Synchronized, fail-operational, fail-safe multi-computer control sy...

Sensor fault detection by activity monitoring

Force feel actuator with limited proportional/integral error feedback

Force feel actuator fault detection with directional threshold

Selective disablement in fail-operational, fail-safe multi-computer...