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:
Sep. 04, 1984
Filed:
Feb. 25, 1983
Takayoshi Nakamura, Atsugi, JP;
Kazuo Maeda, Yokohama, JP;
Masayuki Ohno, Tokyo, JP;
Teruo Akiyama, Sagamihara, JP;
Kabushiki Kaisha Kito, Kawasaki, JP;
Abstract
A lever hoist comprises a change gear provided in a driving shaft for driving a sheave for winding-up a chain or rope for a load, an operating lever rockably driven by a hand, winding-up and winding-off driving pawls engageable with teeth of the change gear and changeable in response to the purpose of hoisting or lowering the load, and a braking assembly for preventing the change gear from being driven by a gravity of the load and having a spring for releasing the braking assembly. According to the invention the lever hoist further comprises a brake spring control member rotatably fitted on the driving shaft, a brake clamping spring arranged between the driving member and the brake spring control member, and a direction change transmission mechanism for transforming rotation of the brake spring control member into axial urging force of the brake clamping spring. The lever hoist is capable of lifting and lowering even a light load by repeatedly rocking the operating lever and includes the brake spring control member which is rotated to release the brake clamping and hence the load sheave into a freely rotatable condition.