3-wheel vehicle board

Land vehicles – Wheeled – Coasters

Reexamination Certificate

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Details

C280S220000

Reexamination Certificate

active

06923459

ABSTRACT:
A 3-wheel vehicle board which can stably maintain height of a handle bar and change a driving posture in various forms. The 3-wheel vehicle board includes a pair of handle bars provided in the upper end thereof, a handle bar shaft with the lower end of which a front wheel is rotatably combined, a second hollow shaft with which the handle bar shaft is slidably combined, a first hollow shaft with which the second hollow shaft is rotatably combined, a locking/unlocking unit for fixing and releasing position of the handle bar shaft with respect to the second hollow shaft, a fixing block which is fixed to the lower end of the first hollow shaft, first and second rotatable links with each one end of which each one end of the fixing block is rotatably combined, a connection block with each one end of which the respective middle portions of the first and second rotatable links are rotatably combined, and with the middle portion of which the fixing block is rotatably combined, first and second foothold links which are rotatably combined with each one end of the first and second rotatable links with a hinge pin and on each one end of which each foothold and each rear wheel are provided, and a clamping unit which fixes the first and second foothold links horizontally and vertically with respect to the first and second rotatable links.

REFERENCES:
patent: 604371 (1898-05-01), Cook
patent: 2170978 (1939-08-01), Smith
patent: 4165093 (1979-08-01), Biskup
patent: 4394029 (1983-07-01), Holmgren
patent: 5435204 (1995-07-01), Marui
patent: 5500635 (1996-03-01), Mott
patent: 5785331 (1998-07-01), Rappaport
patent: 6173976 (2001-01-01), Lee
patent: 6220612 (2001-04-01), Beleski, Jr.
patent: 6305698 (2001-10-01), Liang
patent: 6317923 (2001-11-01), Lo
patent: 6499751 (2002-12-01), Beleski, Jr.
patent: 6505845 (2003-01-01), Fong
patent: 6517093 (2003-02-01), Feng
patent: 6554302 (2003-04-01), Liu

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