Lawrence P Davis

US Patent:

6340137, Jan 22, 2002

Filed:

Aug 26, 1998

Appl. No.:

09/139989

Inventors:

Lawrence P. Davis - Phoenix AZ
Tristam T. Hyde - Phoenix AZ

Assignee:

Honeywell International Inc. - Morristown NJ

International Classification:

B64K 128

US Classification:

244165, 244164

Abstract:

A moment control device for positioning a spacecraft which employs a plurality of spinning bodies operable to impart a desired torque to a space craft, the bodies being constructed in a unitary combination and the unitary combination being mounted to the spacecraft to be positioned.

US Patent:

6390254, May 21, 2002

Filed:

Jul 10, 1997

Appl. No.:

08/889924

Inventors:

Stephen E. Bennett - Glendale AZ
Lawrence P. Davis - Phoenix AZ
David A. Osterberg - Glendale AZ

Assignee:

Honeywell International Inc. - Morristown NJ

International Classification:

F16F 949

US Classification:

188280, 1882823, 188378, 303 87

Abstract:

A constant volume damper which has a very constant damping constant over a considerable range of frequencies by including check valves that prevent cavitation as a piston moves in a chamber. The damper is also sealed for use in space application and is temperature compensated.

US Patent:

6681649, Jan 27, 2004

Filed:

Apr 3, 2002

Appl. No.:

10/115565

Inventors:

Tristram T. Hyde - Phoenix AZ
Lawrence P. Davis - Phoenix AZ

Assignee:

Honeywell International Inc. - Morristown NJ

International Classification:

G01C 1930

US Classification:

74 547, 244165

Abstract:

An inertial control and measurement system is provided for applying inertial control to a vehicle and measuring angular rate of the vehicle. The system includes a control moment gyroscope having a spinning rotor, a gimbal, a gimbal support assembly attached to a spacecraft for allowing rotation of the gimbal about a gimbal axis, and a gimbal motor for rotating the gimbal about the gimbal axis to induce torque. A controller controls the gimbal motor to generate a control torque. The controller further determines an angular rate of the vehicle as a function of a determined torque and a gimbal angle acceleration.

US Patent:

7121729, Oct 17, 2006

Filed:

Mar 15, 2004

Appl. No.:

10/802072

Inventors:

Lawrence P. Davis - Phoenix AZ, US
Dennis W. Smith - Phoenix AZ, US

Assignee:

Honeywell International, Inc. - Morristown NJ

International Classification:

F16C 33/38

US Classification:

384523, 384526

Abstract:

Method and apparatus are provided for reducing vibration in bearings. There are provided first and second bearing rings with races, rotating members rollingly engaging both first and second bearing races, a cage for aligning the rotating members between the first and second bearing races, and vibration reduction means coupled to the cage. The vibration reduction means preferably comprises one or more resonant spring-mass combinations mounted in or on the cage. Damping means is preferably included with the resonant spring-mass combinations. The resonant frequencies of the unmodified bearing cage are first determined and then the spring-mass combinations tuned so that the spring-mass combinations when attached to the cage absorb vibrational energy that would otherwise excite cage vibrations. By selecting the type of spring-mass combination different vibrational modes can be suppressed and/or controlled.

US Patent:

57754721, Jul 7, 1998

Filed:

Nov 22, 1996

Appl. No.:

8/754487

Inventors:

David A. Osterberg - Glendale AZ
Lawrence P. Davis - Phoenix AZ

Assignee:

Honeywell Inc.

International Classification:

F16F 710

US Classification:

188378

Abstract:

A tuned mass damper using a single predetermined mass connected to springs of predetermined stiffness along each of at least two directions to absorb energy from a vibrating structure to which it is attached and damp the vibrations in a rapid and efficient manner with a minimum of weight and volume used.

US Patent:

47609966, Aug 2, 1988

Filed:

Oct 9, 1987

Appl. No.:

7/110076

Inventors:

Lawrence P. Davis - Phoenix AZ

Assignee:

Honeywell Inc. - Minneapolis MN

International Classification:

F16F 500

US Classification:

267122

Abstract:

A vibration damping and isolation apparatus wherein in damping is obtained by purely viscous fluid shear forces. The fluid is sealed in two chambers divided by a orifice to permit fluid flow. Chamber containment of the fluid and chamber volume change is provided by metal bellows which are arranged to provide a constant overall volume. Coulomb forces are avoided by the elimination of rubbing surfaces.

US Patent:

53181565, Jun 7, 1994

Filed:

Dec 15, 1992

Appl. No.:

7/991025

Inventors:

Lawrence P. Davis - Phoenix AZ

Assignee:

Honeywell Inc. - Minneapolis MN

International Classification:

F16F 904
F16F 908

US Classification:

188298

Abstract:

A damping apparatus including a piston having an axis therethrough. The piston includes a coaxial body portion and a first and second end extending oppositely therefrom along the axis. A rigid housing is coaxial with and surrounds the body of the piston for forming a rigid fluid volume between the piston and the rigid housing. The rigid fluid volume includes a first fluid chamber at a first end of the piston and a second fluid chamber at the second end of the piston. The first and second fluid chambers are connected by a damping path. The damping apparatus further includes a flexible housing coupled to the first and second ends of the piston and surrounding the rigid housing to form a fluid return of lower resistance to flow than the damping path between the rigid housing and the flexible housing and to allow movement of the rigid housing with respect to the piston. The rigid housing forms a first and second restrictive path about the first and second ends of the piston, respectively, of higher resistance to flow than the damping path to allow fluid to flow between the fluid return and the rigid fluid volume.

US Patent:

53320700, Jul 26, 1994

Filed:

Apr 21, 1993

Appl. No.:

8/051110

Inventors:

Lawrence P. Davis - Phoenix AZ
David C. Cunningham - Carefree AZ
Damon H. Duncan - Phoenix AZ

Assignee:

Honeywell Inc. - Minneapolis MN

International Classification:

F16F 500

US Classification:

188298

Abstract:

A vibration isolation apparatus having a shaft with an axis therethrough. The shaft has a first and second end. A piston having an axial bore is coaxially positioned with the shaft to provide a damper by forming a damping path between the piston and the shaft. A flange extends radially from the piston for coupling the apparatus to a load. A first extension is coupled to and extends radially from the first end of the shaft and a second extension is coupled to and extends radially from the second end of the shaft. Secondary bellows extending from and secondary fluid paths extending through the first and second extensions provide a first volumetric stiffness in series with the damper. Primary bellows connect the flange to the first and second extensions and are coaxial with the shaft to provide a second volumetric stiffness parallel with the damper and the first volumetric stiffness.