Connector for rebounding apparatus
A trampoline with a frame has a rebounding mat that is tensioned to the frame with a plurality of flexible and cordlike linear elastic members. Cordlike elastic members are connected to the frame with at least one connector retaining the cord such that two portions of the cord extend at an angle greater than 5 degrees and less than 25 degrees relative to one another.
1. A rebounding device comprising:
a frame member that defines a central opening,
a rebounding mat having at least a central portion that is elastically supported by the frame member, that is located within the central opening, and that has an upper surface,
a plurality of connectors attached to the central portion at a perimeter of the central portion,
at least one cordlike flexible elastic member that extends between at least one of the plurality of connectors and the frame member, the at least one of the plurality of connectors having an upper receiving channel and a lower receiving channel,
the upper receiving channel having an upper centerline and the lower receiving channel having a lower centerline, the upper and lower centerlines extending at an gamma angle relative to one another as viewed parallel to the upper surface and perpendicularly to at least one of the upper centerline and the lower centerline, wherein the gamma angle is between 5 and 25 degrees.
2. The rebounding device according to claim 1 , wherein
the at least one cordlike flexible elastic member comprises an upper portion that has an upper axis and that extends from the upper receiving channel to a tangent location at the top of the frame member,
the at least one cordlike flexible elastic member comprises a bottom portion that has a lower axis and that extends from the lower receiving channel to a tangent location at the bottom of the frame member, and
the axis of the upper portion and the axis of the lower portion extend at an beta angle relative to one another as viewed parallel to the upper surface and perpendicularly to at least one of the axes of the upper portion and the lower portion, and
the beta angle is between 5 and 25 degrees.
3. The rebounding device according to claim 2 wherein the gamma angle is between 9 and 15 degrees, and the beta angle is between 9 and 15 degrees.
4. The rebounding device according to claim 2 wherein the gamma angle is between 5 and 25 degrees when viewed perpendicularly to the upper axis.
5. The rebounding device according to claim 2 wherein the gamma angle is between 5 and 25 degrees when viewed perpendicularly to the lower axis.
6. The rebounding device according to claim 2 wherein the beta angle is the same as the gamma angle.
7. The rebounding device according to claim 2 wherein the beta angle is between 5 and 25 degrees when viewed perpendicularly to the upper axis.
8. The rebounding device according to claim 2 wherein the beta angle is between 5 and 25 degrees when viewed perpendicularly to the lower axis.
9. The rebounding device according to claim 1 wherein a portion of the upper receiving channel flares toward the frame member.
10. The rebounding device according to claim 9 wherein:
the upper receiving channel is defined by at least one surface that terminates at an opening that faces the frame member, and
the at least one surface flares toward the opening such that a gap is defined between the at least one flexible elastic member and an uppermost portion of the at least one surface at a location of the opening.
11. The rebounding device according to claim 1 wherein
the at least one cordlike flexible elastic member comprises an upper portion that has an upper axis and that extends from the upper receiving channel to a tangent location at a top of the frame member,
the at least one cordlike flexible elastic member comprises a bottom portion that has a lower axis and that extends from the lower receiving channel to a tangent location at a bottom of the frame member, and
the upper portion and the lower portion extend at an beta angle relative to one another as viewed perpendicularly to both the upper axis and the lower axis, the beta angle depending on a diameter of the frame, distance of the at least one of the connector to the frame and a separation of the upper and lower receiving channels on the at least one of the connectors, the beta angle being between 5 and 25 degrees
wherein, the gamma angle between the upper centerline and the lower centerline is selected to match the beta angle.
12. A rebounding device comprising:
a frame member that defines a central opening,
a rebounding mat having at least a central portion that is elastically supported by the frame member, that is located within the central opening, and that has an upper surface,
a plurality of connectors attached to the central portion at the perimeter of the central portion,
at least one cordlike flexible elastic member that extends between at least one of the plurality of connectors and the frame member,
at least one of the plurality of connectors having an upper receiving channel and a lower receiving channel,
the at least one cordlike flexible elastic member comprises an upper portion that has an upper axis and that extends from the upper receiving channel to a tangent location at the top of the frame member,
the at least one cordlike flexible elastic member comprises a bottom portion that has a lower axis and that extends from the lower receiving channel to a tangent location at a bottom of the frame member,
the upper receiving channel having an upper centerline and the lower receiving channel having a lower centerline, the upper and lower centerlines extending at an gamma angle relative to one another as viewed parallel to the upper surface and perpendicularly to at least one of the upper centerline and the lower centerline, wherein the gamma angle is between 5 and 25 degrees,
the upper axis axially aligns with the upper centerline, and
the lower axis axially aligns with the bottom centerline.
13. A rebounding device comprising:
a frame member that defines a central opening,
a rebounding mat having at least a central portion that is elastically supported by the frame member, that is located within the central opening, and that has an upper surface,
a plurality of connectors attached to the central portion at the perimeter of the central portion, at at least one of the plurality of connectors having an upper receiving channel and a lower receiving channel,
at least one cordlike flexible elastic member that extends between at least one of the plurality of connectors and the frame member,
the at least one cordlike flexible elastic member comprises an upper portion that has an upper axis and that extends from the upper receiving channel to a tangent location at a top of the frame member,
the at least one cordlike flexible elastic member comprises a bottom portion that has a lower axis and that extends from the lower receiving channel to a tangent location at a bottom of the frame member, and
the upper axis of the upper portion and the lower axis of the lower portion extend at an beta angle relative to one another as viewed parallel to the upper surface and perpendicularly to at least one of the upper and lower axes, and the beta angle is between 5 and 25 degrees,
at least one of the plurality of connectors having an upper receiving channel and a lower receiving channel,
the upper receiving channel having an upper centerline and the lower receiving channel having a lower centerline, the centerlines extending at an gamma angle relative to one another as viewed parallel to the upper surface and perpendicularly to at least one of the upper centerline and the lower centerline, wherein the gamma angle is between 5 and 25 degrees.
14. The rebounding device according to claim 13 wherein the gamma angle is between 9 and 15 degrees, and the beta angle is between 9 and 15 degrees.
15. The rebounding device according to claim 13 wherein the gamma angle is between 5 and 25 degrees when viewed perpendicularly to the upper axis.
16. The rebounding device according to claim 13 wherein the gamma angle is between 5 and 25 degrees when viewed perpendicularly to the lower axis.
17. The rebounding device according to claim 13 wherein the beta angle is the same as the gamma angle.
18. The rebounding device according to claim 13 wherein the beta angle is between 5 and 25 degrees when viewed perpendicularly to the upper axis.
19. The rebounding device according to claim 13 wherein the beta angle is between 5 and 25 degrees when viewed perpendicularly to the lower axis.