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:
Oct. 05, 2010
Filed:
Jan. 24, 2008
Marian Bochen, Eitelborn, DE;
Thomas Ehre, Koblenz, DE;
Rainer Massmann, Bonn, DE;
Rolf Mintgen, Thuer, DE;
Marian Bochen, Eitelborn, DE;
Thomas Ehre, Koblenz, DE;
Rainer Massmann, Bonn, DE;
Rolf Mintgen, Thuer, DE;
Stabilus GmbH, Koblenz, DE;
Abstract
A piston/cylinder unit includes a closed cylinder filled with a fluid under pressure, a piston dividing the cylinder into a first working chamber and a second working chamber, and a piston rod extending through the second working chamber. A passage through the piston connects the first working chamber to the second working chamber, and a valve closing member is movable between an open position and a closed position wherein the member closes the passage. A solenoid includes a coil, a coil core, and an armature in the piston, the armature driving the valve closing member between the closed position and the open position in response to a magnetic field produced by a current applied to the coil, the cylinder forming a magnetic field guide tube. The coil is supplied with current by a power line in the piston rod, and may be grounded to the piston rod or the cylinder.