Ladder retaining device and method for using same

Claim 2

A ladder retaining device for temporarily attaching the upper end of a ladder having a pair of spaced apart longitudinal rails to a building parapet wall or the like, said device comprising: a frame; means to temporarily attach the frame to the rails of the ladder to cause the frame to project generally horizontally outwardly therefrom to overhang the building parapet wall; and clamp means to temporarily retain the frame to the building parapet wall, said clamp means fastenable to the frame at various positions to allow the ladder to be securely affixed to parapet walls of varying thicknesses.

Claim 3

The invention of claim 1 wherein the attachment means further comprise a pair of generally C-shaped channels affixed to the frame in spaced apart relation, each of said channels being sized to securely entrap and telescopically slide over a ladder rail.

Claim 4

The invention of claim 2 wherein said C-shaped channels are pivotably affixed to said frame.

Claim 5

The invention of claim 2 wherein said invention further comprises means to adjust the relative spacing between said C-shaped channels to accommodate the varying spacing between the longitudinal rails of the ladder.

Claim 6

The invention of claim 1 wherein said frame further comprises a transverse member having two ends extending generally between the rails of the ladder, and an outwardly projecting horizontal member attached to said transverse member for extending over the parapet wall.

Claim 7

The invention of claim 5 wherein said attachment means further comprise a pair of C-shaped channels pivotably attached to opposite ends of the frame transverse member, said C-shaped channels sized to telescopically fit over the rails of the ladder.

Claim 8

The invention of claim 6 wherein said transverse member further comprises a first and second member further comprises a first and second member telescopically cooperating with one another to enable the relative spacing between the C-shaped channels attached thereto to be freely varied within a limited range to accommodate various ladder rail spacings.

Claim 9

The invention of claim 5 wherein said clamp means further comprises of an arm having two ends, one end slotably attached to the frame horizontal member, and the other end projecting outwardly therefrom in a cantilevered matter for engagement with the building parapet wall.

Claim 10

The invention of claim 8 further comprising fastener means for temporarily fastening the arm to the horizontal member at various positions corresponding to parapet wall thickness.

Claim 11

The invention of claim 9 further comprising stop means to limit the slidable travel of the arm relative to the frame horizontal member to prevent the separation thereof.

Claim 12

A ladder retaining device for temporarily attaching the upper end of a ladder having pair of spaced apart longitudinal rails to a building parapet wall or the like, said device comprising: a substantially horizontal T-shaped frame, further comprising a transverse member having two ends extending generally between the rails of the ladder and an outwardly projecting horizontal member attached to said transverse member for overhanging the parapet wall; a pair of generally C-shaped channels affixed to opposite ends of the frame transverse member, each of said channels being sized to securely entrap, yet telescopically slide over, a ladder rail to temporarily attach the frame thereto; a clamp arm slidably cooperating with the frame horizontal member projecting generally downwardly therefrom for engagement with the building parapet wall; and fastening means for temporarily attaching the clamp arm to the horizontal member to securely entrap the parapet wall between the rails of the ladder and the clamp arm.

Claim 13

A ladder retaining device for temporarily attaching the upper end of a ladder having pair of spaced apart longitudinal rails to a building parapet wall or the like, said device comprising: a substantially horizontal T-shaped frame, further comprising a transverse member having two ends extending generally between the rails of the ladder and an outwardly projecting horizontal member attached to said transverse member for overhanging the parapet wall; a pair of generally C-shaped channels affixed to opposite ends of the frame transverse member, each of said channels being sized to securely entrap, yet telescopically slide over, a ladder rail to temporarily attach the frame thereto; a clamp arm slidably cooperating with the frame horizontal member projecting generally downwardly therefrom for engagement with the building parapet wall; and fastening means for temporarily attaching the clamp arm to the horizontal member to securely entrap the parapet wall between the rails of the ladder and the clamp arm.

Claim 14

The invention of claim 11 further comprising stop means to limit the travel of the clamp arm relative to the horizontal frame member to prevent the separation of same.

Claim 15

The invention of claim 11 wherein said C-shaped channels are pivotably attached to said frame transverse member.

Claim 16

The invention of claim 11 further comprising freely vary the relative spacing between the C-shaped channels to accommodate varying ladder rail spacing.

Claim 17

The invention of claim 11 wherein said frame transverse member further comprises a first and second member telescopically cooperating with one another to freely vary the relative spacing between the C-shaped channels attached to the ends thereof.

Claim 18

The invention of claim 11 wherein said C-shaped channels are pivotably attached to the first and second members to enable the frame to be maintained generally horizontal irrespective of the ladder angle.