Training ladder formed with polygon segments

• US 8,579,768 B2
• Filed: 05/08/2008
• Issued: 11/12/2013
• Est. Priority Date: 05/08/2007
• Status: Active Grant

• Current Assignee: Nike, Inc.
• Original Assignee: Nike, Inc.
• Inventors: Prstojevich, Michael
• Primary Examiner(s): RICHMAN, GLENN E
• Application Number:
  US12/117,643
• Publication Number:
  US 20090156365A1
• Time in Patent Office: 2,014 Days
• Field of Search: 482 35- 37, 482 14- 16, 434/247, 434/255, 472/36
• US Class Current: 482/15
• CPC Class Codes: A63B 2210/50 Size reducing arrangements for stowing or transport
• CPC Class Codes: A63B 23/0464 Walk exercisers without moving parts with movable endless bands A63B22/02
• CPC Class Codes: A63B 5/00 Apparatus for jumping mats for jumping A63B6/00; for racing or riding sports, e.g. hurdles A63K
• CPC Class Codes: A63B 5/22 Foot obstacles for skipping , e.g. horizontally-rotating obstacles
• CPC Class Codes: A63B 69/0028 for running, jogging or speed-walking movable endless bands A63B22/02
• CPC Class Codes: A63B 71/03 Athletic drills or obstacles for sport training, other than foot obstacles for skipping

Abstract

A training ladder formed of a plurality of substantially rigid polygon-shaped segments detachably secured together with segment connectors extending therebetween. The sides of each segment are substantially the same to allow the segment connector to join any sides between two adjacent segments. Accordingly, the path through the ladder can be varied. In one disclosed embodiment, the segments are octagon shaped and pivotally secured to the segment connectors, thereby allowing the ladder to collapse into a stack when not in use and allowing some of the segments to extend substantially vertically, thereby defining a hurdle or other possible vertical structure.

Claims

1. A collapsible athletic training ladder comprising:

a plurality of substantially rigid polygon-shaped segments, each defining an outer perimeter and an interior hollow region; and

a plurality of segment connectors each configured to be selectively pivotably secured to a first side, a second side, or a third side that is adjacent to the first side of the plurality of segments to selectively place the training ladder in a first, a second, and a third configuration;

wherein at the first configuration, a first segment connector of the plurality of connectors is configured to pivotably secure a first side of a first segment with a first side of a second segment and a second segment connector of the plurality of connectors is configured to piviotably secure a second side of the second segment with a first side of a third segment of the plurality of segments of the athletic training ladder such that the first, second and third polygon-shaped segments define a first running pattern in a first direction along a substantially horizontal plane parallel with a horizontal bottom surface;

wherein at the second configuration, the first segment connector is configured to pivotably secure the first side of the first segment with a third side adjacent to the first side of the second segment and the second segment connector is configured to pivotably secure the second side of the second segment with the first side of the third segment, such that the first, second, and third polygon-shaped segments define a second running pattern in which a portion of the second running pattern formed from the first and the second segments extends a second direction divergent from the first direction along the substantially horizontal plane parallel with the horizontal bottom surface; and

wherein at either the first configuration or the second configuration, said first and second segment connectors are configured to be pivotally secured to said first, second and third segments in a manner allowing the first, second and third segments to be pivoted about said respective segment connectors to permit the ladder to be configured in a third configuration in which the first segment is configured to rest on top of said second segment and the second segment is configured to rest on top of the third segment, thereby defining a collapsed stack of said first, second, and third segments.

2. The collapsible athletic training ladder of claim 1, wherein the plurality of segments comprises at least a third substantially rigid segment and a second segment connector configured to operably engage a plurality of sides of the second segment with a plurality of sides of the third segment, thereby allowing said path through said ladder to be changed by the athlete selecting which sides of the second and third segments to operably engage said segment connectors along the horizontal plane.

3. The collapsible athletic training ladder of claim 1, wherein said first substantially rigid polygon-shaped segment is an octagon defining eight sides having substantially the same length.

4. The collapsible athletic training ladder of claim 3, wherein said segment connector is operably securable to all said eight sides of said first substantially rigid polygon-shaped segment.

5. The collapsible athletic training ladder of claim 3, wherein said second substantially rigid polygon-shaped segment is an octagon defining eight sides having substantially the same length.

6. The collapsible athletic training ladder of claim 5, wherein said segment connector is operably securable to all said eight sides of said second substantially rigid polygon-shaped segment.

7. The collapsible athletic training ladder of claim 1, wherein said segment connector is integrally molded.

8. The collapsible athletic training ladder of claim 2, wherein each segment connector has a first segment engaging portion configured to operably engage any one of a plurality of sides of the first segment and a second segment engaging portion configured to operably engage any one of a plurality of sides of another substantially rigid polygon shaped segment.

9. The collapsible athletic training ladder of claim 1, wherein upon being positioned at the first configuration, a side of said first substantially rigid polygon-shaped segment is selectively rotatably engaged with the first segment connector such to be pivoted about said first segment connector to a position substantially perpendicular to said second segment, in a third configuration thereby defining a hurdle.

10. The collapsible athletic training ladder of claim 9, wherein the plurality of segments comprise at least a first, second, third, and fourth substantially rigid polygon-shaped segments pivotally secured to segment connectors thereby allowing said first, second, third, and fourth substantially rigid polygon-shaped segments to be pivoted on top of each other to define a stack of said first, second, third, and fourth substantially rigid polygon-shaped segments.

11. The collapsible athletic training ladder of claim 10, wherein said second and third segments are pivoted about said segment connectors to rest substantially perpendicular to said first and fourth segments, thereby defining a hurdle.