Duct notching template apparatus

Details Duct notching template apparatus Duct notching template apparatus

1990-04-23

1992-01-28

Shoap, Allan N.

Geometrical instruments

Gauge

Template

33485, 33486, 33464, G01B 330, B43L 1300

Patent

active

050833804

ABSTRACT:
The disclosure relates to a duct notching template apparatus having slidably positionable and settable end templates and a center template. The end templates have hooked or tabbed edges for engaging the edge of a piece of sheet metal to be scribed for notching. The templates contain windows for viewing the measuring indicia on the longitudinal element on which they are disposed.

REFERENCES:
patent: 1116512 (1916-01-01), Dannenfelser
patent: 1636025 (1927-07-01), Waelde
patent: 2332568 (1943-10-01), Gauthier
patent: 2632250 (1953-03-01), Rauser
patent: 3834033 (1974-09-01), Pinkard
patent: 3834034 (1974-09-01), Berquist
patent: 4393600 (1983-07-01), Coe
patent: 4507869 (1985-04-01), Stude
patent: 4519143 (1985-05-01), Correlli
patent: 4527337 (1985-07-01), Dreiling
patent: 4644663 (1987-02-01), Needs
patent: 4670990 (1987-06-01), Horvath
patent: 4733477 (1988-03-01), Fincham et al.
patent: 4825559 (1989-05-01), Santos

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