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. 01, 1988
Filed:
May. 21, 1986
Toshihiro Nishiwaki, Kawasaki, JP;
Obara Corporation, Tokyo, JP;
Abstract
A dressing device for a tip of a welding gun comprising a base; a dresser body; a driving device movably provided on said base for moving said dresser body; a pneumatic on-off valve connected with said dresser body; a control switch interposed between said driving device and the dresser body for controlling said pneumatic on-off valve; an air motor for rotating blades of said dressing device; a timer circuit responsive to pressure at an inlet of said air motor; an air changeover valve for changing over air to be fed to said driving device disposed on said timer circuit; a quick return mechanism mounted on said driving device; and a pneumatic control valve connected with said quick return cylinders and furthermore connected with said timer circuit, a tip of the welding gun can be dressed while setting thereof, at a prescribed position, by use of the quick return mechanism controlled by the timer without using springs.