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. 20, 1999
Filed:
Jun. 27, 1997
Applicant:
Inventor:
Kouji Sakota, Hiroshima, JP;
Assignee:
Seki Kogyo Co., Ltd., Hiroshima, JP;
Primary Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
219 8624 ; 219 93 ; 219 89 ;
Abstract
A guide pin of a movable electrode is inserted into a hole of a nut fed to an intermediate position between a fixed electrode and the movable electrode, and the movable electrode is then moved down together with the nut to position the nut on a portion to be welded of a workpiece overlying the fixed electrode. An air passage is formed inside of the guide pin. A plurality of air outlets are formed on the periphery of the tip of the guide pin. A pressurized air is supplied to the air passage and is then blown out of the air outlets, so that a blow of the pressurized air is given to the bottom surface of the nut thereby preventing fallout of the nut.