Sliding ruler square

Details Sliding ruler square Sliding ruler square

2007-02-13

2007-02-13

Fulton, Christopher W. (Department: 2859)

Geometrical instruments

Straightedge type

Square and sliding nonpivotal straightedge

Reexamination Certificate

active

11163977

ABSTRACT:
The present invention is a sliding ruler square that provides an adjustable and extendible straightedge element permitting a user to conveniently scribe lengthy cut lines at pre-selected angles across a work piece typically utilized in the construction industry without the necessity as exhibited by the prior art to reposition the tool. The inventions comprises a right triangularly shaped base with a fence on one base edge, a sliding straightedge on the other base edge and markings along the straightedge and the hypotenuse and other edges of the base to present a variety of ways to measure and mark. The tool combines a number of measurement and scribing functions typically requiring several tools.

REFERENCES:
patent: 579952 (1897-04-01), Campbell
patent: 768324 (1904-08-01), Breul
patent: 3488868 (1970-01-01), Gutowski et al.
patent: 3805397 (1974-04-01), Wilamowski
patent: 5813126 (1998-09-01), Dahl
patent: 6604296 (2003-08-01), Mastrobattista
patent: 7114264 (2006-10-01), Hurley et al.
patent: 2003/0037453 (2003-02-01), Mastrobattista

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