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:
May. 12, 1998
Filed:
Feb. 14, 1996
Applicant:
Inventor:
Bruce R Johnson, Muskegon, MI (US);
Assignee:
Weld Technology Industries, L.L.C., Muskegon, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K / ; B23K / ; F15B / ;
U.S. Cl.
CPC ...
219 89 ; 9216 / ;
Abstract
A welding gun that prevents rotation of the electrode, including a cylinder and a reciprocating piston assembly having a pair of pistons. In addition to the conventional connecting rod, the pistons are interconnected by an anti-rotation rod radially offset from the connecting rod. The anti-rotation rod extends through a partition fixed within the cylinder, thereby preventing the piston assembly from rotating within the cylinder. The welding gun also includes an internal proximity switch for detecting when the piston assembly is fully retracted.