Unicycle
Patent 4786069 Issued on November 22, 1988. Estimated Expiration Date: 
February 9, 2007. 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.
February 9, 2007. 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 3190675 3506283 InventorApplicationNo. 07/012722 filed on 02/09/1987US Classes:280/221, Interconnected with propulsion means280/11.115, With propulsion means driven by occupant482/51, INVOLVING USER TRANSLATION OR PHYSICAL SIMULATION THEREOF482/75, Elevated walking device (e.g., stilts, etc.)74/594.1, Cranks and pedals74/594.4PedalsExaminersPrimary: Love, John J.Assistant: Hill, Mitchell J. Attorney, Agent or FirmInternational ClassesA63B 23/04 (20060101)B62K 1/00 (20060101) B62K 17/00 (20060101) AbstractTubular spacers (28) are positioned between the wheels (10, 12) of a unicycle. Inboard portions of tie bolts (34) extend through the spacers (28). A threaded end portion (38) of the tie bolt (34) screws into a T-nut (40) provided within an opening (26) in a wheel (12). The shaft of the tie bolt (34) projects through an opening (24) in the other wheel (10) and projects outwardly beyond the wheel (10). A second tubular spacer (50) closely surrounds the outboard portion of the tie bolt (34). At one end (52) this spacer bears against an abutment (46). At its opposite end (54) it abuts against the inner surface of the tie bolt head (36). When the tie bolt (34) is tightly screwed into the T-nut (46), it is put into tension and the tubular spacers (28, 50) are put into compression. A pedal element (56) is mounted for rotation about the outboard tubular spacer (50). | |
