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A device which may serve as a ridge hook for hooking a ladder unto a ridge of a roof includes two wheels mounted upon arms. A threaded rod extends through the hollow core of a ladder rung to secure the device to a ladder. An unhooking arrangement uses a pivot arm, normally biased to be parallel to t

A device which may serve as a ridge hook for hooking a ladder unto a ridge of a roof includes two wheels mounted upon arms. A threaded rod extends through the hollow core of a ladder rung to secure the device to a ladder. An unhooking arrangement uses a pivot arm, normally biased to be parallel to the ladder, to lift an upper end of the ladder free of the ridge when a control line is pulled. A ladder rung lock is used to prevent relative movement between the upper and lower sections of an extension ladder.

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A ridge hook device for a ladder comprising: two arms, each having an upper end with means for attachment to a ladder; two wheels, each mounted to a lower end of a corresponding one of said two arms, said wheels and said arms securable in a position relative to a ladder to hook a ladder to a ridge o

A ridge hook device for a ladder comprising: two arms, each having an upper end with means for attachment to a ladder; two wheels, each mounted to a lower end of a corresponding one of said two arms, said wheels and said arms securable in a position relative to a ladder to hook a ladder to a ridge of a roof; and unhooking means extending from adjacent said arms to a location remote from said arms and operable to unhook a ladder from a location near the lower end of a ladder.