Ductwork clip uncrimper

Details Ductwork clip uncrimper Ductwork clip uncrimper

1989-09-26

1990-12-04

Jones, David

Metal deforming

By or with work-constrainer and/or manipulated work-forcer

Comprising lever manipulated to force work

72479, 81 355, 294265, B21D 516

Patent

active

049744410

ABSTRACT:
This tool envisions a method for separating clinched together first and second components of a duct, which components have been clinched into interengagement, by the uncrimping of the clinch collar tab of the first component from the second component. The clinched parts are first pried loose by a sharpened point of a tool which is penetrated between the tab and the second component. The prying is continued by virtue of the use of the fulcrum, integral with the tool, so that the tab is moved from its initial 90.degree. dihedral position to its subsequent zero degree dihedral position.

REFERENCES:
patent: 1616653 (1927-02-01), Frasier et al.
patent: 2118159 (1938-05-01), Castner
patent: 2576000 (1951-11-01), Cowan, Jr.
patent: 3050838 (1962-08-01), Stultz, Jr.
patent: 3872745 (1975-03-01), Garza et al.
patent: 4034595 (1977-07-01), Smith
patent: 4216685 (1980-08-01), Taylor

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