公开(公告)号：US3619542A

公开(公告)日：1971-11-09

申请号：US3619542D

申请日：1969-12-23

Applicant: AMF INC

Inventor： OPPENHEIMER EDGAR D

IPC: B23K11/08 ,  B23K11/00 ,  B23K13/02 ,  B23K13/04 ,  B23K13/06 ,  B23K31/06

CPC classification number: B23K11/0006 ,  B23K13/02 ,  B23K13/043 ,  B23K2201/06

Abstract: First and second gas shoes are placed respectively, on opposite surfaces of two adjacent portions to be welded. Shoes have recesses therein to form cavity which includes spaced edges of two portions upstream of weld zone. Tips of shoes are upstream of weld zone. Gas under pressure is admitted to cavity to bathe edges in controlled atmosphere and gas in a jet escapes at tips of shoes and is directed into weld zone to envelop weld zone in controlled atmosphere.

公开(公告)号：US3588427A

公开(公告)日：1971-06-28

申请号：US3588427D

申请日：1968-08-22

Applicant: AMF INC

Inventor： OPPENHEIMER EDGAR D ,  ROBERTS SIDNEY

IPC: B23K13/02 ,  B23K31/06

CPC classification number: B23K13/025

Abstract: APPARATUS FOR WELDING TOGETHER THE EDGES OF A LONGITUDINAL GAP IN METAL TUBING IN WHICH THE EDGES ARE HEATED TO WELDING TEMPERATURE AND BROUGHT TOGETHER AT A WELD POINT AND A SUPPORTING MANDREL IS MOUNTED INSIDE THE TUBING WHICH INCORPORATES A SCARFING TOOL ASSEMBLY AND/OR AN IMPEDER ASSEMBLY. THIS SUPPORTING MANDREL HAS A BIFURCATED PORTION IN THE WELDING AREA UNDER THE WELD POINT, RESULTING IN A CLEARANCE SPACE BETWEEN THE LEGS OF THE BIFURCATED PORTION, THEREBY PROVIDING A PASSAGE THROUGH WHICH THE SPUME EMANATING FROM THE REGION OF THE WELD POINT WILL PASS TO THE ADVANCING TUBE AND BE CARRIED AWAY.

公开(公告)号：CA906063A

公开(公告)日：1972-07-25

申请号：CA906063D

Applicant: AMF INC

Inventor： OPPENHEIMER EDGAR D

IPC: B23K11/00

公开(公告)号：CA894430A

公开(公告)日：1972-02-29

申请号：CA894430D

Applicant: AMF INC

Inventor： OPPENHEIMER EDGAR D

公开(公告)号：CA888384A

公开(公告)日：1971-12-14

申请号：CA888384D

Applicant: AMF INC

Inventor： ROBERTS SIDNEY ,  OPPENHEIMER EDGAR D