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. 13, 1992
Filed:
Feb. 06, 1990
Gregor Poertzgen, Koblenz, DE;
Castor Fuhrmann, Brachtendorf, DE;
Stabilus GmbH, Koblenz-Neuendorf, DE;
Abstract
According to an illustrative example of the invention, a gas spring comprises a cylinder which is closed at both ends thereof. A piston is provided within the cylinder and separates two working chambers within the cylinder. The working chambers are filled with a pressurized gas. The piston is connected with a piston rod which extends axially through one end of the cylinder. The working chambers can be selectively connected or separated from each other through an axial channel extending through the piston. This axial channel accommodates a valve pin. The valve pin is axially movable by an actuating rod accommodated by an axial bore of the piston rod. The piston is in sealing engagement with an inner circumferential face of the cylinder. The valve pin is in sealing engagement with the channel. The piston is provided with an elastic covering layer, which covering layer provides both the sealing engagement of the piston with the cylinder and the sealing engagement of the valve pin with the piston.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile