초록 ▼

A frame for a skate, and a skate having a frame, the frame including a lower longitudinally elongated member for supporting the wheels of the skate, a housing at opposite ends of the elongated member, each housing demarcated by a pair of lateral walls between which is assembled a respective wheel mo

A frame for a skate, and a skate having a frame, the frame including a lower longitudinally elongated member for supporting the wheels of the skate, a housing at opposite ends of the elongated member, each housing demarcated by a pair of lateral walls between which is assembled a respective wheel mounted on an axle. The elongated member further includes, or has attached thereto between the wheel housings, a lower arc demarcated by a surface facing a line defined by the contact points of the two wheels while supported on a planar surface. The arc extends over a length equal to or greater than a third of the distance between the two wheel axles at each of the ends of the elongated member of the frame.

대표청구항 ▼

1. A skate comprising:a frame, said frame including an elongated member, said elongated member including a housing at each of opposite ends of said elongated member, each of said housings being demarcated by two lateral walls at said opposite ends of said elongated member; a pair of wheels, each of

1. A skate comprising:a frame, said frame including an elongated member, said elongated member including a housing at each of opposite ends of said elongated member, each of said housings being demarcated by two lateral walls at said opposite ends of said elongated member; a pair of wheels, each of said wheels being mounted in a respective one of said housings for rotation about a respective axis, said axis of a first of said wheels being spaced a predeterminate distance from said axis of a second of said wheels, said pair of wheels being the only wheels for supporting the skate during skating; a lower arc extending longitudinally between said wheel housings and extending laterally on each side of a vertical longitudinal median plane of said frame, said arc having a surface facing downwardly toward and extending inwardly away from a planar surface supporting said two wheels; and said lower arc having a longitudinal extent greater than a third of said predeterminate distance said axes of said first and second wheels are spaced apart. 2. A skate according to claim 1, wherein said lower arc of said elongated member has a longitudinal extension greater than said distance by which said wheels are spaced apart minus said diameter of said wheels.3. A skate according to claim 1, wherein said elongated member of said frame includes two lateral arcs that extend over a distance equal to or greater than a third of said distance by which said wheels are spaced apart.4. A skate according to claim 3, further comprising a U-shaped cross-section having lateral and lower walls defining surfaces of said lower and lateral arcs with connecting spacers internally connecting said lateral and lower walls.5. A skate according to claim 3, wherein the lower arc and the lateral arcs are connected by beveled zones.6. A skate according to claim 1, wherein said elongated member comprises lower extensions extending to each of said opposite ends of said elongated member.7. A skate according to claim 4, wherein said extensions extend to said wheels and at least surround a lower part of said wheels.8. A skate according to claim 4, wherein said extensions have beveled sides along side each of said wheels.9. A skate according to claim 1, wherein said lower arc has a constant curvature.10. A skate according to claim 1, wherein said lower arc has a curvature varying over said longitudinal extent of said arc.11. A skate according to claim 10, wherein said lower arc comprises a curved surface in a median portion of said arc, and planar and inclined surfaces extending toward each of said opposite ends of said elongated member.12. A skate according to claim 1, wherein said elongated member has shoulder housings, each of said shoulder housings being adapted to receive a screw provided for assembly of the elongated member to a shell or to a boot.13. A skate according to claim 1, wherein an imaginary line extending said lower arc toward said two opposite ends of said elongated member passes underneath each of said two wheels.14. A skate according to claim 1, wherein no wheels are mounted to said frame between said wheels.15. A skate according to claim 1, wherein each said wheels extends longitudinally beyond a respective one of said opposite ends of said elongated member.16. A skate according to claim 1, wherein said lower arc is a unitary part of said elongated member.17. A skate according to claim 1, wherein said frame further comprises a shoe, affixed to a lower portion of said elongated member, said lower arc being part of said shoe.18. A skate according to claim 1, wherein said lower arc has a longitudinal extent less than said predeterminate distance between said axes but greater than the distance between said wheels.19. A skate comprising:a frame, said frame including an elongated member, said elongated member including a housing at each of opposite ends of said elongated member, each of said housings being demarcated by two lateral walls at said opposite ends of said elongated member; a pair of wheels, each of said wheels being mounted in a respective one of said housings for rotation about a respective axis, said wheels constituting outermost wheels mounted to said frame, said axis of a first of said wheels being spaced a predeterminate distance from said axis of a second of said wheels, said pair of wheels being the only wheels for supporting the skate during skating; a lower arc extending longitudinally between said wheel housings and extending laterally on each side of a vertical longitudinal median plane of said frame, said arc having a surface facing downwardly toward and extending inwardly away from a planar surface supporting said two wheels; and said lower arc having a longitudinal extent greater than a third of said predeterminate distance said axes of said first and second wheels are spaced apart. 20. A frame for a skate, said frame comprising:an elongated member, said elongated member including only two wheel housings, a first of said two wheel housings being positioned at a first end of said elongated member, and a second of said two wheel housings being positioned at a second end of said elongated member, each of said two wheel housings being demarcated by a pair of lateral walls, each of said pair of lateral walls having transversely extending openings to mount axles of a respective wheel; said openings of each of said pairs of lateral walls defining a pair of axes spaced longitudinally apart a predeterminate distance; a lower arc extending longitudinally between said wheel housings and extending laterally on each side of a vertical longitudinal median plane of said elongated member, said arc having a downwardly facing surface extending inwardly toward an upper surface of said elongated member; and said lower arc having a longitudinal extent greater than a third of said predeterminate distance said pair of axes of said openings are spaced apart. 21. A frame for a skate according to claim 20, wherein said lower arc is a unitary part of said elongated member.22. A frame according to claim 21, further comprising a front wheel mounted in said first wheel housing of said elongated member and a rear wheel mounted in said second wheel housing of said elongated member.23. A frame according to claim 22, wherein said lower arc has a longitudinal extent greater than said predeterminate distance between said axes minus a predeterminate diameter of said wheels.24. A frame for a skate according to claim 20, further comprising a shoe affixed to a lower portion of said elongated member, said lower arc being part of said shoe.25. A frame according to claim 24, wherein said shoe and said elongated member include structures to accommodate attaching means for attaching a remainder of a skate to the frame.26. A frame according to claim 24, further comprising a front wheel mounted in said first wheel housing of said elongated member and a rear wheel mounted in said second wheel housing of said elongated member.27. A frame according to claim 26, wherein said lower arc has a longitudinal extent greater than said predeterminate distance between said axes minus a predeterminate diameter of said wheels.28. A skate comprising:a frame comprising a longitudinally elongated member, said elongated member comprising a front wheel housing between lateral walls at a front end of said elongated member and a rear wheel housing between lateral walls at a rear end of said elongated member; a single pair of wheels for supporting the skate on a skating surface, said pair of wheels consisting of a front wheel and a rear wheel, said front wheel being mounted in said front wheel housing and said rear wheel being mounted in said rear wheel housing; said front wheel being rotatable about a first axis, said rear wheel being rotatable about a second axis, said first axis being spaced from said second axis by a predeterminate distance; said frame further comprising a downwardly facing and longitudinally extending grinding surface positioned between said wheel housings, said grinding surface extending laterally on each side of a vertical longitudinal median plane of said frame, and extending inwardly away from a planar surface supporting said pair of wheels; said grinding surface extending in a first direction forwardly and downwardly, said first direction of said grinding surface not intersecting said front wheel; said grinding surface further extending in a second direction rearwardly and downwardly, said second direction of said grinding surface not intersecting said rear wheel. 29. A skate according to claim 28, wherein said grinding surface has a longitudinal extent greater than a third of said predeterminate distance said first and second axes are spaced apart.30. A skate according to claim 28, wherein said grinding surface is a single unitary surface.