Collapsible athletic training ladder
AssigneeNIKE, Inc.
InventorWilliam Dieter
Life of this patent
Estimating the term…
Abstract
A collapsible ladder for use primarily for athletic training and the like has a plurality of spaced-apart, substantially rigid rungs secured with collapsible connectors to a plurality of spaced-apart, substantially rigid spacers extending therebetween. In one disclosed embodiment, the collapsible connectors are strips of flexible material extending between the rungs and spacers. Another disclosed embodiment has a second set of rungs aligned substantially parallel to the plurality of spaced-apart rungs along a common central set of spacers. The collapsible connectors allow the ladder to be quickly and easily transitioned between an extended, operational position, and a collapsed, storage position.
Claims21
A collapsible athletic training ladder configured to be in an extended position and a collapsed position, said ladder comprising:
- a first rung and a second rung wherein each rung has a left end and a right end and each of the first and second rung is rigid;
- a first set of left and right spacers wherein the first set of left and right spacers are rigid;
- and
- wherein upon the ladder being in the extended position, the first rigid rung is configured to be twisted, such that the left end of the first rung is vertically aligned with the right end of the second rung to permit the ladder to be placed in the collapsed position.
A method of forming a ladder comprising:
- providing a first rung and a second rung each having a left end and a right end and each of the first rung and the second rung is rigid;
- providing a first set of left and right spacers wherein the first set of left and right spacers are rigid;
- and
- configuring the first rung to be twisted, wherein upon during the twisting of the first rung, the left end of the first rung is vertically aligned with the right end of the second rung to permit the ladder to be placed in a collapsed position.
Dependencies are inferred from the claim text.