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. 22, 1988
Filed:
Mar. 11, 1986
Applicant:
Inventor:
Kunikatsu Ban, Mie, JP;
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21D / ; B21D / ; B23K / ;
U.S. Cl.
CPC ...
72 52 ; 219 83 ; 219 64 ; 219 84 ; 228150 ;
Abstract
A method of lap welding an eventual can blank of a metal sheet or the like by passing a lap joint between the upper and lower roller electrodes via upper and lower wire electrodes to be heated and simultaneously applied pressure, thereby forming continuous thermal press bond sections, wherein the width of the contact surface of the upper and lower wire electrodes is set to three times the width of the lap joint, and the thermal press bond sections are formed by thermal press bonding without fusion, the center-to-center distance between adjacent thermal press bond sections being set to be in a range of 0.8.+-.0.2 mm.