Gypsum board grooving system

Details Gypsum board grooving system Gypsum board grooving system

1989-11-27

1990-11-13

Yost, Frank T.

Cutting

Other than completely through work thickness or through work...

Grooving

83496, 83878, 144134R, 144136R, 144371, 409157, 409206, B26D 124, B26D 306

Patent

active

049693808

ABSTRACT:
An apparatus and method for forming a flat-bottomed V-groove in wallboard involving a pair of oppositely angled circular saws, wherein saw blades have an obtusely angled outer edge, as by grinding back one corner of each of a plurality of carbide tips on at least one of the two saw blades.

REFERENCES:
patent: 1940106 (1933-12-01), Snyder
patent: 2344003 (1944-03-01), Sheptinsky
patent: 3010352 (1961-11-01), Dunlap
patent: 3672415 (1972-06-01), Holan
patent: 3910170 (1975-10-01), Boy
patent: 4061070 (1977-12-01), Groves

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