Wheel for roller skate and the like
Patent 5129709 Issued on July 14, 1992. Estimated Expiration Date: 
May 2, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 2, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1687113 2878071 Wheel for skateboards and roller skates Molded heavy duty wheel Skate apparatus Dual material safety wheel Patent #: 4699432 InventorApplicationNo. 694875 filed on 05/02/1991US Classes:301/5.302, Traction increasing301/5.308Plural diverse materialsExaminersPrimary: Stormer, Russell D.Attorney, Agent or FirmForeign Patent References
International ClassesA63C 017/22B60B 005/02 AbstractA wheel adapted to be rotated about a normally horizontal axis perpendicular to a normal direction of travel has a hub centered on the axis and a central core body made of a hard material and coaxially surrounding the hub. This core body has an annular outer surface centered on and turned radially away from the axis and having a pair of axially opposite edges. A pair of similar side-wall bodies of a soft material symmetrically flank and are joined to the core body and each have an annular surface having a radial outer edge joining the core body at a respective one of the edges thereof and a radial inner edge at the hub. The surfaces of the side-wall bodies curve continuously from their outer edges to their inner edges. | |
