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. 27, 1980
Filed:
Dec. 29, 1976
Applicant:
Inventors:
Takeshi Araya, Shimoinayoshi, JP;
Tsugio Udagawa, Tomobemachi, JP;
Assignees:
Hitachi, Ltd., both of, JP;
Hitachi Seiko Ltd., both of, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
21912434 ; 318657 ; 336179 ;
Abstract
An automatic weld line copying apparatus has a non-contact type sensor including a core wound with an exciting primary winding which in turn is wound with a secondary winding a plurality of secondary coils differentially. The sensor is compact and able to detect, without contact, the distance from the flat surface or edge line of an object to be welded thus making possible accurate and efficient automatic welding of a small welding assembly with a complicated weld line.