David R Hanson

US Patent:

7082899, Aug 1, 2006

Filed:

Mar 26, 2004

Appl. No.:

10/810930

Inventors:

David E. Hanson - Upton MA, US
Jun Ma - Auburn MA, US
Benjamin G. K. Peterson - West Boylston MA, US
Geoffrey C. Chick - Norfolk MA, US

Assignee:

Bose Corporation - Framingham MA

International Classification:

F02D 27/00
F02D 43/00
F02N 17/00

US Classification:

123 41E, 1231795

Abstract:

An internal combustion engine may be provided with independently controllable valves, fuel injectors and ignition elements that may be used to start the engine without a separate auxiliary device such as an electric starter motor. The engine may fire the cylinders under a startup mode of control at the same time it fires the cylinders under a normal mode of control in order to smooth the transition from start up to normal operating mode. Additionally, an internal combustion engine may use independently controllable valves to stop the engine and ensure that one or more of the pistons come to rest at a position which allows them to be used to restart the engine.

US Patent:

7128032, Oct 31, 2006

Filed:

Mar 26, 2004

Appl. No.:

10/810538

Inventors:

Thomas A. Froeschle - Southborough MA, US
Roger Mark - Barrington RI, US
Thomas C. Schroeder - Southboro MA, US
Richard Tucker Carlmark - Cumberland RI, US
David E. Hanson - Upton MA, US
Jun Ma - Auburn MA, US
Benjamin G. K. Peterson - West Boylston MA, US

Assignee:

Bose Corporation - Framingham MA

International Classification:

F01L 9/04

US Classification:

123 9011, 25112901

Abstract:

An electromagnetic actuator includes a stator assembly mounted to a center pole formed of material having high magnetic permeability and functions as a return path for the magnetic field generated when current is passed through coils in the stator assembly. When current is applied to one or more coils within the stator assembly, a magnetic field is generated that interacts with a magnetic field generated by one or more magnets disposed within the armature assembly and causes the armature to move relative to the center pole thus, for example, opening or closing a valve.

US Patent:

7234442, Jun 26, 2007

Filed:

Jun 1, 2006

Appl. No.:

11/445058

Inventors:

David E. Hanson - Upton MA, US
Jun Ma - Northborough MA, US
Benjamin G. K. Peterson - West Boylston MA, US

Assignee:

Bose Corporation - Framingham MA

International Classification:

F02D 41/06
F02D 43/00

US Classification:

123332, 1231794, 701112

Abstract:

An internal combustion engine may be provided with independently controllable valves, fuel injectors and ignition elements that may be used to start the engine without a separate auxiliary device such as an electric starter motor. The engine may fire the cylinders under a startup mode of control at the same time it fires the cylinders under a normal mode of control in order to smooth the transition from start up to normal operating mode. Additionally, an internal combustion engine may use independently controllable valves to stop the engine and ensure that one or more of the pistons come to rest at a position which allows them to be used to restart the engine.

US Patent:

7252053, Aug 7, 2007

Filed:

May 19, 2006

Appl. No.:

11/438041

Inventors:

Thomas A. Froeschle - Southborough MA, US
Roger Mark - Barrington RI, US
Thomas C. Schroeder - Southboro MA, US
Richard Tucker Carlmark - Cumberland RI, US
David E. Hanson - Upton MA, US
Jun Ma - Northborough MA, US
Benjamin G. K. Peterson - West Boylston MA, US

Assignee:

Bose Corporation - Framingham MA

International Classification:

F01L 9/04

US Classification:

123 9011, 25112901

Abstract:

An electromagnetic actuator includes a stator assembly mounted to a center pole formed of material having high magnetic permeability and functions as a return path for the magnetic field generated when current is passed through coils in the stator assembly. When current is applied to one or more coils within the stator assembly, a magnetic field is generated that interacts with a magnetic field generated by one or more magnets disposed within the armature assembly and causes the armature to move relative to the center pole thus, for example, opening or closing a valve.

US Patent:

49916980, Feb 12, 1991

Filed:

Oct 13, 1989

Appl. No.:

7/421309

Inventors:

David E. Hanson - Westborough MA

Assignee:

Bose Corporation - Framingham MA

International Classification:

F16F 710
F16F 900
A63C 1712
B60B 3700

US Classification:

188380

Abstract:

A vehicle suspension system includes a vehicle body subframe, a wheel with a tire mounted upon a wheel hub assembly having a wheel spindle inside the wheel bearing. A wheel damping mass of ogival shape surrounds the outer race of the wheel bearing and is formed with a vertical slot whose length is perpendicular to the major diameter of the ogival cross section. The damping mass is formed with a pair of openings on each side of the vertical slot that accommodates a support assembly including a vertical shaft held by a shaft retainer intermediate the shaft ends, upper and lower bearings and centering springs located between the shaft retainer and each of the latter bearings. Damping fluid dissipates vibrational energy and may comprise a major component of the damping mass.