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US 2002/0053142 A1Published application
Window and door trim square
OwnerMark Brunettiinventor
Life of this patent
Estimating the term…
Abstract
A geometric instrument useful as a carpentry tool. The invention is a square of thick aluminum plate in the shape of a right isosceles triangle with a handle fitted and perpendicular to the hypotenuse. A rabbet cut is made in the edges of equal sides of the triangular carpenter's square. A second embodiment employs adjustable feeler bars in place of the rabbet cut for checking the square of window and door jambs. Also, the miters or feeler bars facilitate the laying out of short points on the jams for miter cutting.
Claims14
A carpenter's square comprising:
- a triangular body in the shape of a right isosceles triangle and having first and second sides of equal length, and a third side corresponding to the hypotenuse of said right isosceles triangle;
- said first and second sides each having an outer edge;
- said triangular body having a front face and a rear face;
- and
- recessed means for abutting the square against door and window trim forming a reveal with a jamb.
2 more elements
A carpenter's square comprising:
- a triangular body in the shape of a right isosceles triangle and having first and second sides of equal length, and a third side corresponding to the hypotenuse of said right isosceles triangle;
- said first and second sides each having an outer edge;
- said triangular body having a front face and a rear face;
- recessed means for abutting the square against door and window trim forming a reveal with a jamb;
- and
- a handle affixed to and extending outward from said triangular portion at a point along said third side;
- said handle having a length and being sized and dimensioned so as to allow a carpenter to easily check overhead door and window trim square;
- said handle bisecting and being disposed perpendicular to said third side of said triangular portion;
- said recessed means comprising a rabbet cut defined in the outer edge of each of said first and second sides on said rear face of said triangular body.
6 more elements
Dependencies are inferred from the claim text.