Bicycle incorporating bifurcated frame

Details Bicycle incorporating bifurcated frame Bicycle incorporating bifurcated frame

1995-12-11

1998-09-29

English, Peter C.

Land vehicles

Wheeled

Occupant propelled type

280284, B62K 302

Patent

active

058136835

ABSTRACT:
A bicycle, motorcycle or the like is fabricated from a pair of frame sections. A front frame section includes the front fork and wheel, handlebar and steering assemblies and seat. A rear frame section includes the crank assembly, pedal assembly and the rear stays and wheel. A shock absorber resiliently couples the front and rear frames to one another intermediate the crank assembly and seat. The lower terminus of the shock absorber is secured to a center support stay of the rear frame, the upper terminus of the shock absorber being coupled to one plurality of selectable locations on a diagonal support of the front frame. The point of coupling alters the relative stiffness of the suspension to compensate for the load imposed on the bicycle seat. The front and rear frames are coupled to one another by a flexing member which will permit the rear frame to pivot relative to the front frame in a manner which will optimize of the force required to activate the suspension.

REFERENCES:
patent: 4046396 (1977-09-01), Taylor et al.
patent: 5330219 (1994-07-01), Groendal et al.
patent: 5356165 (1994-10-01), Kulhawik et al.
patent: 5498014 (1996-03-01), Kulhawik et al.

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