JEFFREY A KEENEY
Sheet Metal in Montgomery, MA
License number
Massachusetts 6416
Issued Date
Jan 29, 2011
Expiration Date
Jun 28, 2018
Type
Sheet Metal Master
Address
Address
Montgomery, MA 01050
Professional information
Ductwork Clip Uncrimper
US Patent:
4974441, Dec 4, 1990
Filed:
Sep 26, 1989
Appl. No.:
7/412420
Inventors:
Jeffrey A. Keeney - Huntington MA
Philip R. Giroux - Hampden MA
Philip R. Giroux - Hampden MA
International Classification:
B21D 516
US Classification:
72458
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.