Ladder inclination indicator

Details Ladder inclination indicator Ladder inclination indicator

1997-02-28

1999-09-28

Fulton, Christopher W.

Geometrical instruments

Indicator of direction of force traversing natural media

Level or plumb, terrestrial gravitation responsive

33333, 33347, 33371, G01C 912

Patent

active

059568550

ABSTRACT:
A ladder inclination indicator has a transparent thin-walled body shell defining a rearwardly open recess containing a pivot pin supporting a gravity actuated pointer. A keeper plate forms a partial closure for the recess and carries a label which cooperates with the pointer to indicate a position of ladder inclination. Layers of pressure sensitive adhesive adhered to mounting flanges on the body shell secure the device to the side rail of a ladder.

REFERENCES:
patent: 2845719 (1958-08-01), Thomiszer
patent: 3118234 (1964-01-01), Wilson
patent: 4669195 (1987-06-01), Griffin
patent: 5058283 (1991-10-01), Wise et al.
patent: 5063679 (1991-11-01), Schwandt
patent: 5680707 (1997-10-01), Boelling

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