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:
May. 31, 1994
Filed:
Apr. 09, 1992
Applicant:
Inventors:
Assignee:
Elephant Chain Block Company Limited, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B66D / ; B66D / ;
U.S. Cl.
CPC ...
254383 ; 254372 ;
Abstract
A lever type traction machine including a pair of chain holders for holding a chain entering, between side plates, towards the load sheave. Each of the chain holders is provided with a chain-swelling (slacking) restraint portion for preventing the drain from slacking at the rear of the chain holders. The machine is especially advantageous in that the chain will not become entangled or slackened, even if the traction machine is operated up-side down or on its side.