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:
Feb. 10, 1976
Filed:
Nov. 15, 1974
Itiro Yanagawa, Higashimatsuyama, JA;
Isao Suzuki, Higashimatsuyama, JA;
Jidosha Kiki Co. Ltd., , JA;
Abstract
The valve comprises a relay valve unit constituted by a main valve disc having an axial exhaust bore therethrough, and normally biased to a closed position, and a control piston assembly for adjustably moving the main valve disc to the open position, and a modulated-pressure control valve unit operable to supply a pressure, modulated in accordance with the loading of the vehicle, to the control piston assembly. The control piston assembly includes first, second and third pressure-responsive pistons with the first piston being cooperable with the main valve disc and the third piston being interengageable with the first and second pistons. A loading spring is engaged with the second piston, an indicated pressure chamber is formed between the first and second pistons, and a modulated-pressure chamber is formed beneath the third piston and is in communication with the control valve unit. A stroke adjuster, operable in accordance with the loading of the vehicle, is operatively associated with the control valve unit, and the control valve unit includes a spring biased check valve opened, when the modulated pressure exceeds the supply pressure, to equalize the modulated pressure and the supply pressure.