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. 24, 1977
Filed:
Mar. 01, 1976
Applicant:
Inventor:
Ernst Pecha, Nuertingen, DT;
Assignee:
Bielomatik Leuze & Co., , DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
156 64 ; 73 40 ; 429 90 ; 156356 ; 156378 ; 156381 ; 264 401 ; 296232 ;
Abstract
A welding apparatus for welding covers to containers, such as battery casings by pressing the cover on to the casing is provided with a testing device which includes a connector adjacent the pressing-on device and adapted to connect with an opening in the cover. The testing device is adapted to monitor the pressure inside the container after the latter has been charged with fluid under pressure at the end of the welding operation. Any fall in pressure is indicative of a leak at the welded seam.