Bicycle adapted for tandem use

Details Bicycle adapted for tandem use Bicycle adapted for tandem use

1994-10-04

1996-06-04

Hurley, Kevin T.

Land vehicles

Wheeled

Occupant propelled type

280276, B62K 1302

Patent

active

055226108

ABSTRACT:
Bicycles are adapted to be combined by removing the front wheel of a trailing one of the bicycles and attaching the front fork ends to the rear axle of a leading one of the bicycles, resulting in a three-wheeled tandem bicycle with two drive wheels. To allow for relative pitching motion of the coupled bicycles, the attachment includes bearings. Each bearing may include a brass sleeve over the rear axle and a separable end cap on each fork end, the cap held to the fork by screws. The sleeve is longer than the width of the fork end to prevent binding. Each fork includes a yaw-correction torsion spring that resists angular rotation of the handlebars of the trailing bicycle relative to the rear axle of the leading bicycle. The yaw-correction spring may include a flat tine portion of the fork. The tine preferably slides into the upper part of the fork in a slot. Coil springs may also be provided between the upper and lower parts of each fork to resist road shock and to further control relative movements of the bicycles.

REFERENCES:
patent: 305690 (1884-09-01), Humber
patent: 1300343 (1919-04-01), Carswell
patent: 4458908 (1984-07-01), Strong
patent: 5039120 (1991-08-01), Stowe
patent: 5076600 (1991-12-01), Fake
patent: 5372371 (1994-12-01), Larson

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