Foldable bicycle frame

Details Foldable bicycle frame Foldable bicycle frame

1993-07-20

1994-11-01

Rice, Kenneth R.

Land vehicles

Wheeled

Occupant propelled type

280287, B62K 1500, B62K 316

Patent

active

053602250

ABSTRACT:
A foldable bicycle frame comprises a front frame made up of a head tube, a top tube and a down tube, and a rear frame made up of a seat tube, a bottom bracket tube, a seat stay and a chain stay. The top tube is provided at the rear end thereof with a connection tube to receive therein a seat post. The bottom bracket tube is provided at the center of the front end thereof with an extension tube which faces the front wheel and is pivoted at the front end thereof to the bottom end of the down tube. The front frame and the rear frame are fastened together by means of the seat post which is inserted into the connection tube and the seat tube. The front frame and the rear frame are rotatable in relation to each other when the seat post is pulled out of the seat tube.

REFERENCES:
patent: 693521 (1902-02-01), Ishoy
patent: 1584568 (1926-05-01), Clark
patent: 3876231 (1975-04-01), Geisel
patent: 4579360 (1986-04-01), Nishimura et al.
patent: 4900047 (1990-02-01), Montague et al.
patent: 4995626 (1991-02-01), Montague
patent: 5135246 (1992-08-01), Montague
patent: 5205573 (1993-04-01), Mhedhbi
patent: 5222751 (1993-06-01), Chen
patent: 5282639 (1994-02-01), Chen

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