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.

Date of Patent:
Jun. 19, 1990

Filed:

Jun. 08, 1989
Applicant:
Inventors:

Yutaka Hiwatashi, Tokyo, JP;

Katsuyoshi Kamimura, Tokyo, JP;

Atsushi Mine, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60G / ; B60G / ;
U.S. Cl.
CPC ...
280698 ; 280707 ; 280711 ;
Abstract

An active fluid suspension system has a controller for controlling the delivery and withdrawal of air to and from individual suspension units at vehicle wheels in response to the sensor output signals representing a prescribed set of vehicle behaviors. The controller includes insensitivity zone filters each for filtering out those portions of one sensor output signal of which amplitudes are within an insensitivity zone, thereby avoiding unnecessary fluid flow into and out of the suspension units. The insensitivity zone is defined as a range of amplitudes between given positive and negative values. The filters widen the insensitivity zones with an increase in vehicle speed for optimum suspension control in all vehicle speed ranges.


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Hiwatashi, Yutaka. (1990). Control device for an active fluid suspension system of motor vehicles (U.S. Patent No. 4934731). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4934731

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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