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:
Jan. 08, 1991
Filed:
Mar. 16, 1989
Hans-Gerd Eckel, Laudenbach, DE;
Willi Schweikert, Heidelberg, DE;
Firma Carl Freudenberg, Weinheim/Bergstr., DE;
Abstract
A gas-operated spring for the mutual support of two oscillating elements moving relative to one another, for which sensor-controlled (9, 10) first and second devices (1, 2) are provided, which bring about the blowing out of excess compressed gas from the gas-operated spring or the feeding in of additional compressed gas into the gas-operated spring (11) through the activation of valves (3, 4, 5). To prevent a mutual impairment of function, the first device (1) is active only for pressure changes of a frequency above a threshold value and the second device (2) only for changes in the mutual correspondence of the two elements (7, 8), which have a frequency below the threshold value.