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. 07, 2013
Filed:
Aug. 24, 2010
Sung Chul Kang, Seoul, KR;
Woo Sub Lee, Seoul, KR;
Chang Mook Chun, Gyeonggi-do, KR;
Chang Hyun Cho, Gwangju, KR;
Sung Chul Kang, Seoul, KR;
Woo Sub Lee, Seoul, KR;
Chang Mook Chun, Gyeonggi-do, KR;
Chang Hyun Cho, Gwangju, KR;
Korea Institute of Science and Technology, Seoul, KR;
Abstract
Disclosed herein is a weight compensation mechanism. A weight compensation mechanism is installed in a link member rotatable in a plurality of directions. The weight compensation mechanism includes a plurality of bevel gears that rotates in harmony with the rotation of the link member. Cam plates are connected to one or more of the bevel gears to be rotated together with the bevel gears. Weight offsetting parts are connected to the cam plates, respectively, and each of the weight offsetting parts compresses an elastic member based on the rotation of the link member and the cam plate to absorb gravitation generated by the weight of the link member.