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:
Sep. 03, 1996
Filed:
Oct. 13, 1994
Fanuc, Ltd., Yamanashi, JP;
Abstract
An emergency robot shutdown circuit reliably stops a movable component of a robot which has suffered an overtravel condition. The emergency robot shutdown circuit has three relays, and detects an overtravel condition of the robot with a dog located in a limit position of a normal operation range of the movable component of the robot to command an emergency shutdown of the robot. The second relay holds an overtravel signal which is outputted from a detecting circuit. A switching transistor is connected parallel to a make contact of the second relay, and an overtravel cancel switch is connected parallel to another make contact of the second relay. The base of the switching transistor is supplied with an overtravel unlatching pulse in synchronism with the closing of the overtravel cancel switch. The third relay, which is connected in series with the other make contact of the second relay, has three make contacts which make up a power cutoff circuit. These three make contacts are turned off only when the third relay is de-energized.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile