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:
Dec. 08, 2009
Filed:
Aug. 26, 2008
Holger Ansel, Mülheim-Kärlich, DE;
Meik Broeder, Dachsenhausen, DE;
Stefan Bonnekessel, Koblenz, DE;
Stephan Enders, Koblenz, DE;
Alexander Koehl, Trier, DE;
Rainer Massmann, Bonn, DE;
Rolf Mintgen, Thuer, DE;
Marc Nadler, Bendorf, DE;
Willi Nieratschker, Koblenz, DE;
Rainer Sauer, Mayen, DE;
Holger Ansel, Mülheim-Kärlich, DE;
Meik Broeder, Dachsenhausen, DE;
Stefan Bonnekessel, Koblenz, DE;
Stephan Enders, Koblenz, DE;
Alexander Koehl, Trier, DE;
Rainer Massmann, Bonn, DE;
Rolf Mintgen, Thuer, DE;
Marc Nadler, Bendorf, DE;
Willi Nieratschker, Koblenz, DE;
Rainer Sauer, Mayen, DE;
Stabilus GmbH, Koblenz, DE;
Abstract
The invention relates to a gas spring which uses a compensating medium acting on a compensating piston in order to compensate the dependence on temperature of its characteristic. According to a first aspect of the invention, a compensating medium (M) is selected whereof the critical temperature (T) is between the lower limit temperature (T) and a temperature exceeding the upper limit temperature (T) Of the range of operating temperatures of the gas spring () by up to 100° C., and the gas spring () is designed such that, at an operating temperature (T) of the gas spring () not exceeding the critical temperature (T) of the compensating medium (M), the point indicating the state of the compensating medium (M) lies on or above the vapor pressure curve. According to a second aspect, in order to simplify the structure of the gas spring (), a single compensating piston () which takes the shape of a cup is used and separates the working chamber (Ia), the compensating chamber () and the restoring chamber () of the gas spring () from one another.