Foldable frame member for a foldable bicycle

Details Foldable frame member for a foldable bicycle Foldable frame member for a foldable bicycle

1994-11-30

1996-02-20

Hill, Mitchell J.

Land vehicles

Wheeled

Occupant propelled type

745511, 745513, 280287, 403322, B62K 1500

Patent

active

054923506

ABSTRACT:
A foldable bicycle frame member includes first and second shafts connected pivotally at one end and a locking unit for retaining releasably the first and second shafts in a coaxial position. The locking unit includes a first locking arm having a first end connected pivotally to the second shaft, and a second locking arm having a first end connected pivotally to a second end of the first locking arm and a second end connected pivotally to the first shaft. The first and second locking arms are formed as elongated members that are generally U-shaped in cross section. A retaining pin extends through pivot holes formed in the first end of the second locking arm and into longitudinal slots formed in the second end of the first locking arm. The position of the retaining pin in the slots when the second locking arm is received in the first locking arm can be adjusted to adjust the force for retaining releasably the first and second shafts in the coaxial position.

REFERENCES:
patent: 4911458 (1990-03-01), Lin et al.
patent: 5301972 (1994-04-01), Lee
patent: 5337609 (1994-08-01), Hsu
patent: 5440948 (1995-08-01), Cheng

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