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:
Nov. 14, 1989
Filed:
Jun. 27, 1988
NHK Spring Co., Ltd., Yokohama, JP;
Abstract
In a gas spring apparatus according to the present invention, a cylinder assembly comprises a cylinder housing and a rod fitted therein for axial reciprocation. An oil chamber and a gas chamber are defined inside the cylinder assembly, and the capacity of the gas chamber changes as the cylinder housing and rod reciprocate relatively to each other. A damping force generating mechanism is provided in the cylinder assembly. A flexible bladder includes a body made of elastomer and a gas-barrier film. The film is formed on the surface of the elastomer body. The bladder divides the oil and gas chambers completely. Thus, when the rod reciprocates in the axial direction, relatively to the cylinder, the bladder inflates and deflates. The gas spring apparatus is used for a suspension system of an automobile.