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:
Mar. 27, 1990
Filed:
Jan. 24, 1989
Gen Tsujii, Sayama, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
The opening degree of the two arms of a welding gun movable by a robot to a plurality of welding spots, each of the arms being equipped with an electrode tip, is detected when the arms are closed with no work clamped between them and compared with a lower-limit opening degree value. The lower-limit opening degree value is previously set to be equal to the opening degree experienced when the electrode tips are reduced to their lower usability limit. The comparison determines if the tips need to be replaced. After replacement, the opening degree observed with the gun closed with no work clamped between the tips is compared to an upper-limit opening degree value, previously set, to operate an alarm if a defective tip or an incorrectly mounted tip is present.