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:
Nov. 09, 1999
Filed:
Oct. 15, 1998
Masanori Matsubara, Tokyo, JP;
Kiyoshi Wakaizumi, Tokyo, JP;
Abstract
A multi-joint robot is disclosed, wherein a mount structure is vertically moved by means of a drive mechanism including a vertical threaded shaft and a stepping motor for rotationally driving said threaded shaft, thereby to vertically move the mount structure along the threaded shaft between an upper most position and a lower most position. A balancing device for balancing the weight of the mount structure includes at least one or more tension coil springs, the tension coil spring having one end anchored to a bottom of the robot, the opposite end connected to the bracket of the mount structure and an intermediate part thereof put into slide engagement with the pulley means which is arranged at an upper part of said robot above said bracket of said mount structure, so that the tension coil spring or springs may be expanded when said mount structure is at a position below said upper most position.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile