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:
Apr. 08, 2003
Filed:
Sep. 14, 2001
Frank D. Sorg, Middletown, IN (US);
Ronald D. Gentry, Cicero, IN (US);
Delco Remy America, Inc., Anderson, IN (US);
Abstract
The method of the present invention involves setting a penetration threshold as well as a maximum weld time when hot staking armature conductors to the slots of a commutator. To perform each weld, an electrode is forcibly contacted with the top conductor in one of the slots of the commutator. Next, electric current is delivered to the electrode, causing the conductor to heat and begin to deform within the slot. During this time, the electrode moves further into the slot. If the electrode reaches the penetration threshold in the commutator slot before the maximum weld time is reached, current to the electrode is terminated. After terminating current to the electrode, the electrode remains in contact with and applies force to the conductor until the maximum weld time is reached. After the maximum weld time is reached, the electrode is removed from contact with welded conductor.