Geometrical instruments – Gauge – Collocating
Patent
1991-12-11
1992-07-14
Haroian, Harry N.
Geometrical instruments
Gauge
Collocating
248542, 33666, 33577, G01B 302, A47G 120
Patent
active
051291541
ABSTRACT:
A device for marking a wall to indicate where to install an element, such as a nail, to mount an article, such as a picture, in a desired position on the wall. The device includes a rigid handle member interconnected by a pivoting assembly to the upper end of a rigid elongate suspension member. The lower end of the suspension member includes a wall-marking element, such as a sharpened pin, projecting perpendicularly from the rear side of the suspension member, and a catch engaging member directly aligned with the wall-marking element to engage, for example, a strand of wire located behind the picture. While the handle member is pivoted to a ready position out-of-line with the suspension member, the pivoting assembly maintains the rear side of the suspension member in vertically suspended position generally coplanar with the wall so that the pin is positioned properly for accurate marking. During marking a stabilizing mechanism immobilizes the upper portion of the picture. In one distinct type of ready position, the handle member is pivotable off to one side of a plane extending perpendicular to the wall and passing through the longitudinal axis of the suspension member, thereby enabling the picture to be moved to one side of the user for full viewing by an assistant during marking. Desirably, the handle member is angled away from the wall to enable the entire hand to grasp the device. The handle member assumes a folded-up position for covering the pin.
REFERENCES:
patent: 3516165 (1970-06-01), Pfeffer
patent: 4455756 (1984-06-01), Greene
patent: 4893776 (1990-01-01), Floyd
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