A sled includes a hull and a strap extending transversely across the hull. The strap extends across the hull at a first longitudinal position selected such that it extends across the calves of a kneeling rider. This enables the rider to kneel erect when riding the sled.
대표청구항▼
1. A manufacture comprising a downhill racing sled for carrying a rider while sliding down a snow-covered slope, said rider having legs, each leg having a thigh, a calf, and a knee for varying an angle between said thigh and said calf, said sled comprising an elongated molded hull having a crescent
1. A manufacture comprising a downhill racing sled for carrying a rider while sliding down a snow-covered slope, said rider having legs, each leg having a thigh, a calf, and a knee for varying an angle between said thigh and said calf, said sled comprising an elongated molded hull having a crescent shaped profile, said hull having longitudinally extending runners extending from a bow of said hull to a stern of said hull, and a channel between said runners for providing lateral stability in snow, a first pair of transversely opposed anchor points on opposite sides of said hull for engaging a strap that extends across said hull, and a second pair of transversely opposed anchor points on opposite sides of said hull for engaging a strap that extends across said hull, said second pair of anchor points being disposed astern of said first pair of anchor points, and a strap attached to one of said first pair and said second pair of transversely opposed anchor points, wherein when said strap is attached to said first pair of transversely opposed anchor points, said strap is configured to pass over said thighs of said rider, and when said strap is attached to said second pair of transversely opposed anchor points, said strap is configured to pass under said thighs of said rider and over said calves of said rider, wherein by attaching said strap to said second pair, said rider is able to cause a center of gravity of a mass defined by a combination of said rider and said sled to move along a line perpendicular to said hull by using said knee to adjust said angle between said calf and said thigh, and wherein when said strap is attached to said first pair, movement of said center of gravity along said line is constrained, wherein said channel defines a hump protruding vertically into said hull, and wherein said hump provides a center anchor for coupling to said strap, said center anchor being configured to anchor said strap to said hull thereby securing said rider's legs individually, thus suppressing lateral shifting of said legs during a turn. 2. The manufacture of claim 1, further comprising means for selectively engaging said strap at one of a first longitudinal position and a second longitudinal position. 3. The manufacture of claim 1, wherein said channel has a progressively increasing depth. 4. The manufacture of claim 1, wherein said hump has a progressively increasing height. 5. The manufacture of claim 1, further comprising contoured shin pads for receiving said rider in a kneeling position. 6. The manufacture of claim 1, wherein said strap has a variable length. 7. The manufacture of claim 1, wherein said strap is made of an elastic material. 8. The manufacture of claim 1, further comprising springs extending between said hull and ends of said strap. 9. The manufacture of claim 1, wherein said center anchor comprises a structure molded to conform to said rider, said center anchor forming an aperture; and wherein said strap passes through said aperture. 10. The manufacture of claim 1, wherein said center anchor comprises a horizontal bar extending longitudinally and supported by vertical legs, said horizontal bar and said vertical legs defining an aperture, and wherein said strap passes through said aperture. 11. The manufacture of claim 1, wherein the center anchor comprises a structure molded to conform to the rider, the center structure forming an aperture for receiving a strap. 12. The manufacture of claim 1, wherein the center anchor comprises a horizontal bar extending supported by vertical legs, the horizontal bar and the vertical legs defining an aperture for receiving a strap. 13. The manufacture of claim 1, further comprising a gunwale surrounding said hull, said gunwale being raised at a bow of said hull for suppressing intrusion of snow into said hull, and providing a handhold for said rider. 14. A manufacture comprising a downhill racing sled for carrying a rider while sliding down a snow-covered slope, said rider having legs, each leg having a thigh, a calf, and a knee for varying an angle between said thigh and said calf, said sled comprising an elongated molded hull having a crescent shaped profile, said hull having longitudinally extending runners extending from a bow of said hull to a stern of said hull, and a channel between said runners for providing lateral stability in snow, a first pair of transversely opposed anchor points on opposite sides of said hull for engaging a strap that extends across said hull, and a second pair of transversely opposed anchor points on opposite sides of said hull for engaging a strap that extends across said hull, said second pair of anchor points being disposed astern of said first pair of anchor points, and a strap attached to one of said first pair and said second pair of transversely opposed anchor points, wherein when said strap is attached to said first pair of transversely opposed anchor points, said strap is configured to pass over said thighs of said rider, and when said strap is attached to said second pair of transversely opposed anchor points, said strap is configured to pass under said thighs of said rider and over said calves of said rider, wherein by attaching said strap to said second pair, said rider is able to cause a center of gravity of a mass defined by a combination of said rider and said sled to move along a line perpendicular to said hull by using said knee to adjust said angle between said calf and said thigh, and wherein when said strap is attached to said first pair, movement of said center of gravity along said line is constrained, said sled further comprising a gunwale surrounding said hull, said gunwale being raised at a bow of said hull for suppressing intrusion of snow into said hull, and providing a handhold for said rider. 15. The manufacture of claim 14, further comprising means for selectively engaging said strap at one of a first longitudinal position and a second longitudinal position. 16. The manufacture of claim 14, wherein said channel has a progressively increasing depth. 17. The manufacture of claim 14, further comprising contoured shin pads for receiving said rider in a kneeling position. 18. The manufacture of claim 14, wherein said strap has a variable length. 19. The manufacture of claim 14, wherein said strap is made of an elastic material. 20. The manufacture of claim 14, further comprising springs extending between said hull and ends of said strap.
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이 특허에 인용된 특허 (11)
Churchill Robert L. (San Bernadino County CA), Aqua planing board.
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