Land vehicles – Wheeled – Occupant propelled type
Patent
1991-01-22
1993-06-29
Focarino, Margaret A.
Land vehicles
Wheeled
Occupant propelled type
280287, 403110, B62K 1500
Patent
active
052227510
ABSTRACT:
A foldable bicycle frame comprises a front triangular portion and a rear triangular portion. The former includes a top tube, a down tube, a head tube and a seat tube while the latter contains a bottom bracket tube, a seat stay, a chain stay and a seat tube. Both front and rear triangular portions are hinged by means of upper and lower coupling pieces so that they can pivot to be folded. Upon being unfolded, both front and rear triangular portions are held securely by virtue of a seat stay which extends beyond the seat tube to be fastened securely to the top tube. Front and rear triangular portions can be also held so securely in another manner that a seat post is inserted into connection tube and seat tube which are coaxially arranged.
REFERENCES:
patent: 1096504 (1914-05-01), Grossman
patent: 3304099 (1967-02-01), Jankowski
patent: 4443023 (1984-04-01), Ishibashi
patent: 4579360 (1986-04-01), Nishimura et al.
patent: 4900047 (1990-02-01), Montague
Boehler Anne Marie
Focarino Margaret A.
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