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:
Feb. 17, 1987
Filed:
Jul. 06, 1984
Wolfgang Zirk, Dittelbrunn, DE;
Fichtel & Sachs AG, Schweinfurt, DE;
Abstract
A pneumatic spring for motor vehicles comprises a bellows. Adjacent portions of the bellows overlap each other. These adjacent portions are normally maintained at a distance from each other. Under certain conditions the faces touch each other. In such a case, considerable friction and wear occur between adjacent faces. In order to reduce such wear, a lubricant is provided. In order to prohibit undesirable effects of the presence of the lubricant, particularly with respect to the fixation of the bellows to adjacent parts of the pneumatic spring, the lubricant is enclosed and fixed by at least one membrane. This membrane is destroyed only when the faces are pressed against each other.