Geometrical instruments – Straightedge type – Plural straightedges – relatively moveable
Patent
1997-12-19
2000-04-18
Gibson, Randy W.
Geometrical instruments
Straightedge type
Plural straightedges, relatively moveable
33465, 33468, 33469, 33470, 33471, 33472, B43L 710
Patent
active
060499907
ABSTRACT:
A Multifunction Layout Tool capable of performing the functions of an adjustable square, adjustable T-square, try square, combination square, protractor, angle duplicator, depth gauge, rip gauge, rafter-stair layout tool, and compass is disclosed. The tool comprises a generally T-shaped squaring base, mounting an elongated sliding rule. The base is comprised of a body defining a central flared channel to receive the rule and a pair of squaring arms extending from the body, defining a squaring edge along an end of the base, perpendicular to the channel. The rule is disposed in and extends out of the channel, between the squaring arms. The rule is a blade having a rounded end, a square end, and a central longitudinal slot. A fastener anchored to the base, extending through the rule slot, maintains the rule within the channel. Protractor indicia disposed within the channel and corresponding vernier indicia on the rounded end of the rule measure disposition angles of the rule when the rule is fully extended. Direct reading intermediate angle indicia, comprising paired parallel lines can be disposed within the flared portion of the channel. Direct measurement indicia along the blade initiates from the square end of the blade; and radius measurement indicia for drawing a circle of a given radius, measured from the squaring edge of the base, initiates from the distal end of the blade slot. Alternatively, a vial level may be disposed generally parallel with the squaring edge, in a recess defined in the back of the base.
REFERENCES:
patent: 905249 (1908-12-01), Townsend
patent: 964785 (1910-07-01), Johnson
patent: 2582649 (1952-01-01), Olson
patent: 3273246 (1966-09-01), Siberini
patent: 3324559 (1967-06-01), Williamson
patent: 4599806 (1986-07-01), Wright
patent: 5832618 (1998-11-01), Scarborough
patent: 5915806 (1999-06-01), Levee
patent: 5983509 (1999-11-01), Gosselin
Gibson Randy W.
Mahurin Jerry L.
LandOfFree
Multifunction layout tool does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multifunction layout tool, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multifunction layout tool will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2327393