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. 30, 1993
Filed:
Sep. 04, 1991
Shigeru Umeda, Tokyo, JP;
Obara Corporation, Tokyo, JP;
Abstract
A stopper device in a welding robot gun is capable of increasing the amount of movement of the upper arm and reducing the amount of movement of the lower arm or vice versa by adjusting the protruding amount of the stopper bolt from the rear wall of the stopper cylinder inside the stopper cylinder and of preventing the upper and lower arms from moving unstably from the state where the welding gun is open to the state where a pressure cylinder supplies fluid under pressure. The stopper device comprises a cradle, a stopper cylinder having a rod fixed to the cradle, a tip end of the rod connected to a rear end of the upper arm by way of a link wherein the stopper cylinder has a front chamber provided with a fluid supply and discharge port and a rear wall into which an adjustable stopper bolt is screwed so as to protrude deep or slight therefrom inside the stopper cylinder.