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. 23, 2002
Filed:
Apr. 06, 2001
Holger Behrends, Hannover, DE;
Continental Aktiengesellschaft, Hannover, DE;
Abstract
An air spring fines a longitudinal axis and includes a first end member in the form of a cover and a second end member in the form of a roll-off piston at a distance from the first end member. A flexible resilient member is clamped between the first and second end members so as to permit the first and second end members to move toward each other in the direction of the longitudinal axis and the distance between the end members changes during the operation of the air spring. An elevation sensor includes an electrically conductive helix arranged in the direction of the longitudinal axis. The helix has a plurality of turns and is arranged in the air spring so that the helix changes in length when the end members move towards each other in the direction of the longitudinal axis. The first and second end members and the flexible resilient member conjointly define an interior space. The elevation sensor further includes a length-nonchanging element mounted in the interior space on one of the end members so as to be in electrical interaction with a number of the turns. The number of the turns is dependent upon the distance between the end members.