초록 ▼

A road luge includes an elongated frame having a front end and a back end, a strut extending rearwardly and upwardly from the back end of the frame, a back axle supported on the strut and fixed in orientation relative to the frame, and a single back wheel rotationally mounted on the back axle along

A road luge includes an elongated frame having a front end and a back end, a strut extending rearwardly and upwardly from the back end of the frame, a back axle supported on the strut and fixed in orientation relative to the frame, and a single back wheel rotationally mounted on the back axle along the centerline axis of elongation of the frame. The road luge has a front assembly attached to the frame at a location adjacent to the front end of the frame. The front assembly includes two rotationally mounted and steerable front wheels, with one front on either side of the frame. The road luge has a reclining body rest supported on the frame, so that a rider may recline on the body rest with the rider's torso in a substantially horizontal position, and with the rider's feet extending toward the front end of the frame, and the rider's head angled upwardly so as to permit vision toward the front end of the frame.

대표청구항 ▼

A road luge includes an elongated frame having a front end and a back end, a strut extending rearwardly and upwardly from the back end of the frame, a back axle supported on the strut and fixed in orientation relative to the frame, and a single back wheel rotationally mounted on the back axle along

A road luge includes an elongated frame having a front end and a back end, a strut extending rearwardly and upwardly from the back end of the frame, a back axle supported on the strut and fixed in orientation relative to the frame, and a single back wheel rotationally mounted on the back axle along the centerline axis of elongation of the frame. The road luge has a front assembly attached to the frame at a location adjacent to the front end of the frame. The front assembly includes two rotationally mounted and steerable front wheels, with one front on either side of the frame. The road luge has a reclining body rest supported on the frame, so that a rider may recline on the body rest with the rider's torso in a substantially horizontal position, and with the rider's feet extending toward the front end of the frame, and the rider's head angled upwardly so as to permit vision toward the front end of the frame. by the relatively rotatable surface as compared with interfacial contact pressure near said first footprint edge. 3. The annular hydrodynamic seal assembly of claim 2, comprising: said resilient annular seal body having a second annular sealing surface of sloped configuration in generally opposing relation with said at least one annular sealing surface, said at least one annular sealing surface defining an annular seal geometry varying in depth about at least part of said seal circumference. 4. The annular hydrodynamic seal assembly of claim 1, comprising: said second footprint edge being of substantially circular configuration. 5. The annular hydrodynamic seal assembly of claim 1, comprising: at least one energizer element for loading said at least one annular sealing surface against the relatively rotatable surface and establishing said annular interfacial contact footprint with the relatively rotatable surface. 6. The annular hydrodynamic seal assembly of claim 5, comprising: said resilient annular seal body having a first modulus of elasticity; and said at least one energizer element having a second modulus of elasticity being greater than said first modulus of elasticity. 7. The annular hydrodynamic seal assembly of claim 5, comprising: said resilient annular seal body having a first modulus of elasticity; and said at least one energizer element having a second modulus of elasticity being less than said first modulus of elasticity. 8. The annular hydrodynamic seal assembly of claim 1, comprising: said at least one annular sealing surface being defined at least in part by an annular angulated surface having a varying angle about at least pan of said seal circumference. 9. The annular hydrodynamic seal assembly of claim 1, comprising: said at least one annular sealing surface being defined at least in part by an annular curved surface having a varying curvature about at least part of said seal circumference. 10. The annular hydrodynamic seal assembly of claim 1, comprising: said resilient annular seal body defining a dynamic control surface and having a ratio of length dimension divided by depth dimension being greater than 1.2 for resisting interference compression induced cross-sectional twisting of said resilient annular seal body. 11. The annular hydrodynamic seal assembly of claim 1, comprising: said resilient annular seal body defining a static control surface for resisting interference compression induced cross-sectional twisting of said resilient annular seal body. 12. An annular hydrodynamic seal assembly, comprising: first and second relatively rotatable members at least one of which defines a relatively rotatable sealing surface, said first and second relatively rotatable members defining at least a portion of a lubricant chamber therebetween, a lubricant being contained within said lubricant chamber; an annular direct compression type hydrodynamic seal sewing as a partition between said lubricant located within said lubricant chamber and an environment fluid, said hydrodynamic seal having an annular seal body having a seal circumference, at least one seal end and a substantially circular dynamic exclusionary edge exposed to the environment fluid and defining at least one annular sloping surface having a varying slope that varies from a minimum slope to a maximum slope about at least part of said seal circumference, said at least one annular sloping surface defining at least a portion of a dynamic sealing surface, said at least one annular sloping surface being deformed by interference sealing engagement with said relatively rotatable sealing surface defining a hydrodynamic wedging angle and defining at least a portion of a generally annular dynamic sealing interface having an annular interfacial contact footprint with said relatively rotatable sealing surface and having a first lubricant side footprint edge and a second environment side footprint edge, said varying