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. 04, 1989
Filed:
Mar. 31, 1987
Applicant:
Inventors:
Donald L Margolis, Davis, CA (US);
Yoshiyuki Yasui, Davis, CA (US);
Assignee:
Aisin Seiki Kabushiki Kaisha, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16F / ; F16F / ; F16F / ; F01B / ;
U.S. Cl.
CPC ...
267 6421 ; 267 6424 ; 267218 ; 188318 ; 92 605 ;
Abstract
An air spring assembly which includes a main air chamber and an interconnected auxiliary air chamber in which there is disposed a piston movable endwise thereof upon actuation of a reversible electric motor to increase or to decrease the volume of the auxiliary air chamber that is open to the main air chamber, thereby adjusting the effective volume of the main air chamber and thus its spring constant.