Back to results
US 4,456,276 AGranted
Bicycle assembly
OwnerPeter Bortolininventor
Life of this patent
Estimating the term…
Abstract
A bicycle having a frame, a driven wheel rotatably supported on the frame, a drive sprocket rotatably mounted on the frame, a driven sprocket fixed to said wheel, a chain extending between the sprockets; a pair of levers pivotally attached to the frame, and a pair of links extending between the drive sprocket and levers, a pedal fixed to the extremity of each lever, and wherein said drive sprocket is rotated by the reciprocation of said pedals.
Claims3
A velocipede including a frame;
- at least one rear driven wheel rotatably mounted on the frame;
- and a pedal drive assembly oppositely mounted on the frame and operatively associated with said wheel to drive the wheel;
- said assembly including a pair of pedal levers pivotally mounted on the frame so as to be pivotable about a first axis, a pedal mounted on the other end of each lever, a drive sprocket mounted on said frame for rotation about a fixed second axis, a driven sprocket attached to said wheel so as to drive same, said driven sprocket being rotatable about the rotational axis of said wheel, a link being pivotally attached to each lever intermediate its extremities and pivotally attached to said drive sprocket so as to rotate same upon reciprocation of said pedals, and wherein said first axis is spaced from the wheel axis and is fixed relative to the frame at a location above said wheel.
Dependencies are inferred from the claim text.