Hand tool

Geometrical instruments – Straightedge type – Square and fixed straightedge

Reexamination Certificate

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Details

C033S482000

Reexamination Certificate

active

11737983

ABSTRACT:
A hand tool of a substantially hexagonal shape to facilitate a variety of tasks, such as pipefitting, is provided wherein the tool includes two 90-degree internal angles formed by the intersection of the sides of the tool. At least one slot is provided along and in the perimeter of the tool. Planar or geometric tools are selectively secured within the at least one slot.

REFERENCES:
patent: 778808 (1904-10-01), Starrett
patent: 3670418 (1972-06-01), Hamilton, Jr.
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patent: 4375724 (1983-03-01), Brock
patent: 4380872 (1983-04-01), Moran
patent: 4598482 (1986-07-01), Castleton
patent: 4641435 (1987-02-01), Brown
patent: 4914825 (1990-04-01), Howard
patent: 5339530 (1994-08-01), Wright
patent: 6233789 (2001-05-01), Douglas
patent: 6550153 (2003-04-01), Keith
patent: 6553677 (2003-04-01), Szumer
patent: 6578278 (2003-06-01), Siefert
patent: 6758016 (2004-07-01), Gobeil
patent: 6785976 (2004-09-01), Morehouse
patent: 6996911 (2006-02-01), Dinius
patent: 7117606 (2006-10-01), Brown
patent: 7178252 (2007-02-01), Belagrd
patent: 2007/0026472 (2007-02-01), Brown

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