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. 09, 2002
Filed:
Feb. 13, 2001
Hirotetsu Sonoda, Saitama, JP;
Bosch Braking Systems Co., Ltd., Tokyo, JP;
Abstract
A steering damper has a flow passage control valve for switching and connecting among a pump, a tank and left and right chambers in a power cylinder in correspondence to a steering operation, and left and right cylinder passages ( ) for connecting to the left and right chambers. The steering damper is provided with left and right damper portions ( A, B) having variable throttle valves ( ) arranged in the middle of the respective cylinder passages and limiting an inflow to the flow passage control valve from the power cylinder and pilot operated check valves ( ) connected thereto in parallel and allowing an inflow from the flow passage control valve to the power cylinder. A pilot plunger ( ) arranging them at positions close to the respective passages and sliding between the left and right damper portions is provided. Respective end portions of the pilot plunger are set to a pressure receiving surface for receiving the respective fluid pressure by being faced within the left and right cylinder passages and an operating surface for opening the pilot operated check valve in another passage by being operated by the fluid pressure within one cylinder passage.