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. 09, 1976
Filed:
Oct. 07, 1975
Kabushiki Kaisha Komatsu Seisakusho, Tokyo, JA;
Abstract
A control valve is provided which is designed to be set in place on a hydraulic circuit of a two-drum type hydraulic-actuated winch for controlling the actuation of the hook and the boom of a crane, and to be employed for actuating a hoisting-up clutch, a hoisting-down clutch, and a brake. A control valve is designed with a spool and a sliding lever arranged in place in the main body of the valve in such a manner as to be free to slide therein, with the said sliding lever connected with a control lever for the hook and the boom, wherein the operating capability of the said control lever is so set in place as to be on a higher level than the hydraulic operating capability to be fed to hydraulic equipment.