Ladder inclination indicator
AssigneeAlbert J. Foss
InventorsAlbert J. Foss, William F. Lytle
Life of this patent
Estimating the term…
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.
Claims17
A ladder inclination indicator comprising a transparent thin-walled indicator body shell defining a recess and having an opening therein, said body including a keeper plate forming a partial closure for said opening, an axially elongated pivot member contained within said recess integrally connected to and projecting in axially cantilever position from said indicator body, a gravity actuated indicating member contained within said recess and supported by said pivot member for pivotal movement relative to said indicator body, said keeper plate cooperating with said pivot member to retain said indicating member within said recess display means carried by said indicator body for cooperating with said indicating member to indicate an inclined condition of a ladder when the ladder inclination indicator is mounted in a predetermined position on the ladder, and attaching means carried by said indicator body for securing said ladder inclination indicator to a side rail ladder.
A ladder inclination indicator comprising a hollow thin-walled indicator body shell defining a rearwardly open recess, a pair of mounting flanges integrally connected to the indicator body shell and projecting outwardly in opposite direction from the body shell, a cylindrical pivot pin integrally connected in a cantilever position to the body shell within the recess, a gravity actuated pointer pivotally supported on the pivot pin and wholly disposed within the recess, a keeper plate mounted at the rear of the body shell and forming a partial closure for said rearwardly open recess, said keeper plate cooperating with said pivot pin to retain said pointer within said recess, and display means on said keeper plate and within said recess for cooperating with said pointer to indicate the inclination of a ladder to which the ladder inclination indicator is attached.
Dependencies are inferred from the claim text.