Invention Grant
- Patent Title: Door actuation system having a variable damping device
- Patent Title (中): 门致动系统具有可变阻尼装置
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Application No.: US590121Application Date: 1996-01-23
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Publication No.: US5803404APublication Date: 1998-09-08
- Inventor: Anton A. Petrou , Craig H. Scott , Stephen B. Warner , Jerry D. Hielkema
- Applicant: Anton A. Petrou , Craig H. Scott , Stephen B. Warner , Jerry D. Hielkema
- Applicant Address: IL Skokie
- Assignee: MPC Products, Inc.
- Current Assignee: MPC Products, Inc.
- Current Assignee Address: IL Skokie
- Main IPC: B64C1/14
- IPC: B64C1/14 ; B64C1/24
Abstract:
The damper is comprised of a set of core rotor magnets arranged in an opposing north/south configuration. A conducting material cylindrically encircles the rotor magnets. A set of stator magnets laterally encircle the conducting material and are arranged in the same manner as the rotor magnets. A system of gears are coupled to the damper shaft and control the rotation of the rotor magnets such that they can be positioned relative to the stator magnets to set up the desired damping torque. As the rotor and stator magnets of opposite polarity approach each other, the eddy-current in the rotating conducting material increases causing the conducting material to generate a field in response to the eddy-current. The damping torque is caused by the magnetic force generated when the induced field in the material and the stator/rotor field attempt to line up.
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