Foldable bicycle frame

Details Foldable bicycle frame Foldable bicycle frame

1996-10-22

1998-08-18

Johnson, Brian L.

Land vehicles

Wheeled

Occupant propelled type

280278, 2802884, B62K 1500

Patent

active

057949581

ABSTRACT:
A foldable bicycle frame includes a head tube, a downtube unit, a chain stay unit, a telescopic seat unit, and a seat stay unit. The head tube is adapted to be coupled with a front fork for carrying a front bicycle wheel. The downtube unit has a front end connected to the head tube, and a rear end. The chain stay unit has a horizontal front end portion that is connected foldably to the rear end of the downtube unit and that is adapted to be mounted with a crank arm assembly, an inclined vertical rear end portion, and a middle portion that is between the front and rear end portions and that is provided with means for carrying a rear bicycle wheel thereon. The telescopic seat unit has a top end adapted to be mounted with a bicycle seat thereon and a bottom end connected pivotally to the front end portion of the chain stay unit. The seat stay unit has a front end pivoted to the top end of the seat unit and a rear end pivoted to the rear end portion of the chain stay unit.

REFERENCES:
patent: 3623749 (1971-11-01), Jensen
patent: 3990717 (1976-11-01), Best
patent: 4132428 (1979-01-01), Lassiere
patent: 4448435 (1984-05-01), Hon
patent: 4460191 (1984-07-01), Ishibashi et al.
patent: 4582335 (1986-04-01), Paioli et al.
patent: 5205573 (1993-04-01), Mhedhbi
patent: 5398955 (1995-03-01), Yeh

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