The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 16, 1991
Filed:
Mar. 07, 1990
Yoram Guy, Ann Arbor, MI (US);
Monroe Auto Equipment Company, Monroe, MI (US);
Abstract
In a remote controlled fluid piston-piston rod type damper, a ported damping piston divides a cylinder into upper and lower chambers, a 'spoiler' sleeve reciprocably encircles an electrical coil, a pair of shoulders extend radially from the piston rod, and a pair of precompressed coil springs position the piston between the shoulders for reciprocable axial movement relative to the piston rod. An electrically controlled valve operates to regulate flow between the chambers in response to relative reciprocable motion between the piston rod and the piston, the electrical coil being energized by an alternating voltage input whereby to generate a magnetic field about the sleeve. Movement of the spoiler sleeve through the magnetic field changes the current in the electrical due to self-inductance, and a remote control module generates a control signal, in response to the change in coil current, to actuate the electrically controlled valve whereby to regulate flow between the chambers.