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. 05, 1977
Filed:
Jun. 27, 1975
Yutaka Sugimoto, Hirakata, JA;
Ryoji Shiota, Katano, JA;
Kabushiki Kaisha Komatsu Seisakusho, Tokyo, JA;
Abstract
Double-drum winch has a hook drum for actuating a hook through a hook wire wound around the hook drum and a boom drum for actuating a boom which supports the hook through a boom wire wound around the boom drum each rotatably mounted on a drum shaft, a hook clutch and a hook brake engageable and disengageable with and from the drum shaft for driving or arresting the hook drum, a boom clutch and a boom brake engageable and disengageable with and from the drum shaft for driving or arresting the boom drum and a clutch mechanism including a forward driving connection clutch for driving the drum shaft in the forward direction, a reverse driving connection clutch for driving the drum shaft in the reverse direction, and a plurality of different speed clutches for driving the drum shaft at different speeds. The hook drum and the boom drum can be actuated independently from each other in either of the forward and reverse directions at any of the different speeds by the selected operation of one or more of the three manually controlled systems.