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:
Jul. 07, 1987
Filed:
Sep. 06, 1985
Gerhard Rohner, Mannheim, DE;
Willi Schweikert, Heidelberg, DE;
Gerd-Heinz Ticks, Wald-Michelbach, DE;
Firma Carl Freudenberg, Weinheim, DE;
Abstract
An air spring has a variable interior space at a gas pressure for spring action between relatively-vibrating bodies. A control device has a sensor electrically responsive to the gas pressure for electrically operating an intake valve for admitting gas to the interior space and an outlet valve for venting gas from the interior space to atmosphere. This damps or isolates vibrations in the air spring in dependence on the control device. The control device may also respond to auxiliary transducers for the gas pressure, spring height, and level, speed, steering, braking, or acceleration of a vehicle on which the air spring is used, for example.