Drywall utility knife

Details Drywall utility knife Drywall utility knife

1989-03-10

1990-01-02

Watts, Douglas D.

Compound tools

Pocketknife type

30162, B26B 1100

Patent

active

048903876

ABSTRACT:
A drywall utility knife is set forth including a main housing provided with an elongate slot positioned in a parallel relationship between the opposed parallel sides of the main housing. A removable knife housing is frictionally retained relative to the main housing and is provided with a biasing member to bias a utility knife against an interior wall of the housing to maintain the knife at a desired orientation relative to the housing. A pivotally mounted saw is oriented from a first position within the housing to a second position exteriorly of the housing and aligned lengthwise thereof formed with a resilient detent lock engageable with a rear blunt surface of the knife that is displaceable relative to the blunt surface to enable repositioning of the knife to the first position. A rasp surface is formed on a bottom surface of the knife for abrading drywall once severed or sawed by the blades of the knife. The knife is formed with a downwardly tapering forward side with an arcuate rear side to enable secure grasping of the knife within the palm of an individual's hand.

REFERENCES:
patent: 2980996 (1961-04-01), Beran
patent: 3061927 (1962-11-01), von Frankenberg et al.
patent: 3660896 (1972-05-01), Umholtz

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