Land vehicles – Wheeled – Occupant propelled type
Reexamination Certificate
2005-08-30
2005-08-30
DePumpo, Daniel G. (Department: 3611)
Land vehicles
Wheeled
Occupant propelled type
C280S282000, C280S287000
Reexamination Certificate
active
06935649
ABSTRACT:
A foldable tricycle includes a center frame, a front frame to which a front wheel is rotatably attached, a rear frame to which two rear wheels are rotatably attached, and a four-bar link including a first bar that is integrated with the front frame, a second bar that is integrated with the center frame, a third bar that is integrated with the rear frame, and a fourth bar. The fourth bar has a shape of plates and covers the other bars while the link operates between an unfolded position and a folded position. Lockers that locks the link in either the unfolded position or the folded position are provided and include a pin, two recesses that receives the pin, and a tension spring that presses the pin into the recesses. A semi-circle guide guides the pin between the two positions and also covers the third bar.
REFERENCES:
patent: 4079957 (1978-03-01), Blease
patent: 5279181 (1994-01-01), Boudreau
patent: 5553879 (1996-09-01), Niemeyer et al.
patent: 6120048 (2000-09-01), Li
patent: 6152473 (2000-11-01), Shih
patent: 6161847 (2000-12-01), Howell et al.
patent: 6286848 (2001-09-01), Augustin
patent: 6431567 (2002-08-01), Tsai
patent: 6530589 (2003-03-01), Ma
patent: 6575486 (2003-06-01), Ma
patent: 6609723 (2003-08-01), Chuang
patent: 6612598 (2003-09-01), Wu
patent: 20-2002-0027091 (2002-09-01), None
DePumpo Daniel G.
Park John K.
Park & Sutton LLP
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