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. 04, 2007
Filed:
Oct. 04, 2005
Robin Stevenson, Bloomfield, MI (US);
Pei-chung Wang, Troy, MI (US);
Michael J. Karagoulis, Okemos, MI (US);
Hai-lung Tsai, Rolla, MO (US);
Robin Stevenson, Bloomfield, MI (US);
Pei-Chung Wang, Troy, MI (US);
Michael J. Karagoulis, Okemos, MI (US);
Hai-Lung Tsai, Rolla, MO (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
According to the invention a hollow cylindrical shank of electrically conducting metal is connected to a resistance welder. A coolant supply tube passes through the shank and has an interior coolant supply passage. The coolant supply tube has an outer diameter less than the inner diameter of the hollow cylindrical shank. A weld cap seats on the shank and has a cap tip and a cap skirt that depends from the cap tip and is attached to the shank. An underside of the cap tip faces the shank and the supply tube. A coolant receiving bore formed into the underside of the weld cap extends into the cap tip to receive the coolant supply tube part way into the bore. The bore formed into the underside of the cap tip defines a bore sidewall that provides added area of heat transfer contact between the coolant and the cap tip.