Bose Corporation

David E Hanson

Benjamin G K Peterson

Jun Ma

Thomas A Froeschle

Thomas C Schroeder

Roger Mark

Richard Tucker Carlmark

Geoffrey C Chick

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.

Electromagnetic actuator and control

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.

Controlled starting and braking of an internal combustion engine

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.

Damping with damping mass inside wheel

Growing community of inventors

Upton, MA, United States of America

David E Hanson