초록 ▼

A ladder standoff device adapted to be readily attached to and detached from a ladder comprises an elongated axle member having a pair of wheels rotatably mounted at opposing ends thereof, an elongated standoff bar attached to the axle member and extending transverse thereto, and a handle member piv

A ladder standoff device adapted to be readily attached to and detached from a ladder comprises an elongated axle member having a pair of wheels rotatably mounted at opposing ends thereof, an elongated standoff bar attached to the axle member and extending transverse thereto, and a handle member pivotally attached to the end of the standoff bar remote from the axle member. The standoff device is attached to a rung of the ladder by a pivot structure that is mounted on the standoff bar and consists of a fixed hook member and a cooperating sleeve that is slideable along the standoff bar; and the standoff device may be locked in position by a further attachment member that is slideable along the handle member and adapted to engage a rung of the ladder different from the rung upon which the device pivots. The axle member and standoff bar may each be of telescopic construction to permit adjustment of the distance between the wheels that engage a wall structure adjacent the ladder, and the distance between the axle member and the rung of the ladder upon which the device is pivotally mounted.

대표청구항 ▼

A ladder standoff device adapted to be readily attached to and detached from a ladder and adapted, when attached, to be manually varied in position by a person standing on the ladder thereby to vary the orientation of the ladder relative to an adjacent wall structure, said device comprising an elong

A ladder standoff device adapted to be readily attached to and detached from a ladder and adapted, when attached, to be manually varied in position by a person standing on the ladder thereby to vary the orientation of the ladder relative to an adjacent wall structure, said device comprising an elongated axle member having a pair of wheels rotatably mounted at opposing ends thereof for selective rolling engagement with and along a wall structure adjacent the ladder, an elongated standoff bar one end of which is attached to said axle member at a position between said wheels, said standoff bar extending away from said axle member at substantially right angles thereto, first attachment means on said standoff bar, said first attachment means comprising fixed abutment means attached to said standoff bar and extending outwardly of said standoff bar, said fixed abutment means being adapted to be positioned adjacent one side of a rung of the ladder, and movable abutment means adapted to be variably positioned along said standoff bar relative to the opposite side of the ladder rung in opposed relation to said fixed abutment means, said fixed and movable abutment means cooperating with one another to provide a pivotal attachment of said standoff bar on the said ladder rung, handle means attached to the other end of said standoff bar, said handle means being operative upon manual manipulation to pivot said standoff bar about said pivotal attachment thereby to vary the position of said axle member and wheels relative to the adjacent wall structure, and second attachment means mounted on said handle means for selective releasable engagement with a portion of the ladder spaced from the said ladder rung to lock said standoff device against pivotal movement about the said ladder rung.