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:
Aug. 30, 1983
Filed:
Mar. 02, 1981
Gerd-Jurgen Eckold, St. Andreasberg, DE;
Hans MaaB, Bad Lauterberg, DE;
Walter Eckold GmbH & Co., St. Andreasberg Sperrluttertal, DE;
Abstract
A tool for forming a lateral opening in a tube comprises an assembly which can be inserted longitudinally into a tube until it lies opposite to an opening (12) through which an operating member (44) can be passed for operative engagement with the assembly at 46. The assembly includes a wedge member (16) with wedge surfaces (22) extending symmetrically in relation to the direction of motion of the operating member (44). Two spreader bodies (28,30) are mounted on the wedge member (16) and after initial insertion of the tool the operating member acts to displace the wedge member and hence the spreader body so that it contacts and deforms the interior of the pipe. Complete withdrawal of the tool through the opening (12) deforms the metal surrounding the opening and after a suitable finishing process another tube can be welded at right angles to the first mentioned tube to form a T-piece.