Collar hole die

Details Collar hole die Collar hole die

1999-02-04

2000-07-04

Crane, Daniel C.

Metal deforming

With cutting

By composite tool

72327, 72467, 29890052, B21D 2814, B21D 4506

Patent

active

060821655

ABSTRACT:
A collar hole die for forming a hole in brass headers used in radiators with a collar around the periphery of the hole. The collar hole die includes a body with top and bottom faces, and an outer side. The body has a center bore extending therethrough between the top and bottom faces of the body. The top face of the body has an annular extent upwardly extending therefrom around the outer periphery of the center bore. The annular extent has an upper, inner and outer portions. The inner portion of the annular extent has an annular inner recess therearound adjacent the upper portion of the annular extent.

REFERENCES:
patent: 798530 (1905-08-01), Rehfuss
patent: 819639 (1906-05-01), Eustice
patent: 1793296 (1931-02-01), Wilson
patent: 3245465 (1966-04-01), Young
patent: 3776016 (1973-12-01), Quinn
patent: 4555928 (1985-12-01), Delio

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