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:
Dec. 07, 1999
Filed:
Nov. 19, 1997
Applicant:
Inventor:
Yi Sug Kwon, Changwon, KR;
Assignee:
LG Industrial Systems Co., Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ; B65G / ;
U.S. Cl.
CPC ...
474103 ; 1988104 ;
Abstract
A chain tension control apparatus for preventing a chain chattering in a power transmission system including main and subordinate sprockets and a chain connecting the main and subordinates sprockets. The apparatus maintains a chain tension by sensing a chain release and accordingly driving an electromagnet in accordance with a compensation signal that responds to chain release factors, and the chain tension in the apparatus is maintained by disposing a permanent magnet adjacent to the chain, thereby preventing chain vibration and noise from occurring.