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ApplicationNo. 703012 filed on 08/26/1996
US Classes:280/11.27, Trucks and mountings280/11.223, Axle mounting arrangement280/11.231, Three or four wheels280/11.233Two wheels
ExaminersPrimary: Johnson, Brian L.
Assistant: Cuff, Michael
Attorney, Agent or Firm
Foreign Patent References
International ClassA63C 001/00
AbstractA quick release fastener system which is used as an axle system for efficient and reliable attachment, disengagement and reattachment of a component secured by the fastener system. The axle system of the invention includes a pair of axle assemblies, each having an elongated fastener member having a shank, one end of which having a drive structure, an opposite end of which having a threaded portion. A nut member or expander is engageable with the threaded portion of the corresponding fastener and is adapted for engagement in a bore of a wheel assembly. Nut spreading structures are provided on each nut and each fastener which cause the nut to spread or enlarge when the fastener is engaged therewith and rotated therein. The nut is initially retained on the threaded portion of the fastener with the nut spreading structures disengaged. A spline, key, or equivalent structure is formed in the bore and at least one slot or groove is provided on the nut, which is sized and dimensioned for receiving the spline therein. The slot allows the nut to spread or expand, with the spline engaging the slot preventing the nut from rotating in the bore. Nominal rotation of the fastener relative to the nut, approximately a 90° or a quarter turn, results in engaging the nut spreading structures on the fastener and nut to expand or spread the nut and thereby causing the exterior of the nut to forcibly contact and engage the inside surfaces of the bore.