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:
Dec. 31, 1991
Filed:
Mar. 27, 1990
Applicant:
Inventor:
Kenro Takahashi, Kanagawa, JP;
Assignee:
Nissan Motor Company, Limited, Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60G / ;
U.S. Cl.
CPC ...
280714 ; 280709 ;
Abstract
An active suspension system includes a hydraulic circuit associated with a pressure control valve for adjusting fluid pressure in a working chamber of an active cylinder. A variable orifice is provided between a control portion of the pressure control valve and the working chamber. The variable orifice is operated to provide a first full path area while a line pressure in a supply line for feeding pressurized fluid to said pressure control valve is higher than a predetermined pressure level and a second restricted path area when the line pressure is lower that the predetermined level.