Patent ID: 7694670
Filing Date: 2010-04-13
Classification: B25H,B26B,B28D,B43L,E04F,Y10T

Abstract:
1. A scribing tool comprising a scribe member, an extension member, and a tile engagement member, the tile engagement member being connected to the scribe member via the extension member, the scribe member being pivotally connected to the extension member about a first axis, the tile engagement member comprising first and second portions, the first portion of the tile engagement member being slideably connected to the extension member, the second portion of the tile engagement member being pivotally connected to the extension member via the first portion of the tile engagement member about a second axis that is movable with the first portion relative to the extension member, the second portion of the tile engagement member being movable relative to the first portion of the tile engagement member along a path that extends through a first plane that is parallel to and includes the second axis, the path and the first plane being pivotally movable with each other and with the second portion of the tile engagement member about the second axis relative to the extension member and being slideably movable with the first portion of the tile engagement member relative to the extension member, the path being a linear path, the second portion of the tile engagement member comprising first, second, third, and fourth engagement portions, the first and second engagement portions defining a first right-angle that is rotationally and translationally fixed in orientation with respect to the second portion of the tile engagement member, the third and fourth engagement portions defining a second right-angle that is rotationally and translationally fixed in orientation with respect to the second portion of the tile engagement member, the first right-angle being parallel to the second right-angle and spaced from the second right-angle by a first distance, the linear path being parallel to a second plane that bisects each of the first and second right-angles, and the movement of the second portion of the tile engagement member relative to the first portion of the tile engagement member along the liner path being limited to a second distance that is equal to the square root of the product of two times the square of the first distance.