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.:

US 5305653 B1

Date of Patent:

Apr. 26, 1994

Filed:

Sep. 25, 1992

Robot wrist mechanism

Applicant:

Inventors:

Yukio Ohtani, Kawasaki, JP;

Satoshi Uehara, Yokohama, JP;

Masahiro Igarashi, Kawasaki, JP;

Hiroshi Suzuki, Yokohama, JP;

Assignee:

Tokico Ltd., Kanagawa, JP;

Attorney:

Scully, Scott, Murphy & Presser

Primary Examiner:

Allan D Herrmann

Int. Cl.

CPC ...

B25J / ; B25J / ;

U.S. Cl.

CPC ...

7447 / ; 7447 / ; 901 26 ; 901 29 ;

Abstract

A robot wrist mechanism such as those used for painting, sealing and welding operations is disclosed. The robot wrist mechanism comprises an arm rotated by a drive source; a first wrist member rotatably supported on the end of the arm so as to be rotatable about a first rotation axis; a second wrist member supported at another end of the first wrist member so as to be freely rotatable about a second rotation axis. The second axis and the arm axis are arranged to lie in the same plane. A mounting shaft is provided on the second wrist member with an axis of the mounting shaft lying in a plane including the first axis and orthogonal to the second axis. The second wrist member is arranged to protrude upwards with respect to a plane including the first axis and the axis of the mounting shaft. With the robot wrist mechanism of the present invention, the drive mechanism transmitting the drive force of the drive shaft to the mounting shaft protrudes upwards of a line through the mounting shaft and arm. As a result, the operability of a robot having this arm during direct teaching is greatly improved.

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Ohtani, Yukio. (1994). Robot wrist mechanism (U.S. Patent No. 5305653). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5305653

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