Abstract: An oscillating pedal type bicycle is provided with a pedal lever having a front pedal supporting portion and a rear power transmitting portion which are rigidly connected together and which make an oblique angle with respect to one another, with the apex of the oblique angle pointing downwardly and to the rear in the intermediate position of the pedal levers. The two pedal levers each have an intermediate pivot point which is generally under the seat of the bicycle, with the rear end of the pedal lever near the driving hub of the bike and the front end of the pedal lever supporting pedals and being located close to the position of the pedals in a conventional bike during the power stroke. The front portion of the pedal lever between the pivot point and the pedal may be bent to increase the length of the stroke.

Abstract: An elongate flexible power transmission member, stationarily affixed at one end and secured to tension biasing means at the other end, is engaged with a unidirectional drive mechanism. Reciprocating power input means angularly deflect a section of the power transmission means, causing reciprocal movement of the power transmission means and urging rotation of the unidirectional drive mechanism. The drive ratio between the length of the stroke of the reciprocating power input means and the degree of rotation of the unidirectional drive mechanism is controlled by a pair of extendibly and retractably movable guides engaged with the power transmission member for determining the section thereof subject to angular deflection.

Abstract: An oscillating pedal type bicycle is provided with a pedal lever having a front pedal supporting portion and a rear power transmitting portion which are rigidly connected together and which make an oblique angle with respect to one another, with the apex of the oblique angle pointing downwardly and to the rear in the intermediate position of the pedal levers. The two pedal levers each have an intermediate pivot point which is generally under the seat of the bicycle, with the rear end of the pedal lever near the driving hub of the bike and the front end of the pedal lever supporting pedals and being located close to the position of the pedals in a conventional bike during the power stroke. The power ratio of the bike may be varied by varying the position of the driving chain belt or other flexible member connected to the bicycle hub along the length of the rearwardly extending portion of each of the pedal levers.

Abstract: An improved chain control unit for a bicycle of the type having a pair of crank arms rotatably mounted at their rear ends on a mount secured to the frame of the bicycle behind the rear wheel thereof. Thus, pedals on the front ends of the crank arms are driven up and down by upward and downward movements of the legs. The chain control unit includes a follower for each crank arm, respectively, each follower operating to change the angular relationship between a pair of adjacent stretches of the chain in a manner to progressively increase the angular travel of a sprocket at the hub of the rear wheel in response to uniform angular, downward travel of the corresponding crank arm to thereby provide for optimum torque applied to the rear wheel. Several embodiments of the chain control unit are disclosed including one having an overriding feature operated by a manually actuated control device carried on the handlebar or other suitable location.

Abstract: A pedal drive mechanism for a are vehicle. In a preferred bicycle version, pedal lever arms Additional pivotally attached to each side of the frame near the rear wheel hub for reciprocal rotation within a limited angular sector. Downward forces exerted by a rider on the pedals are transmitted through flexible tension members on each side of the bicycle anchored either to first attachment points intermediate the ends of the lever arms or to second attachment points on the frame above the lever arms and leading around pulleys mounted at the other of the first and second points. From the pulleys each tension member leads over and around a corresponding rotary driving member that is connected through an overrunning clutch to the rear wheel. Means interconnecting the lever arms return one arm to the upper starting position while the other arm is in the downward power stroke.

Abstract: A toy snowmobile including an endless drive track for propelling the snowmobile, and manually actuated drive members movable in to-and-fro paths of travel for alternately driving the drive track.

Abstract: A pedal drive mechanism for a rider-powered vehicle. In a preferred bicycle version, pedal lever arms are pivotally attached to each side of the frame near the rear wheel hub for reciprocal rotation within a limited angular sector. Downward forces exerted by a rider on the pedals are transmitted through flexible tension members on each side of the bicycle anchored either to first attachment points intermediate the ends of the lever arms or to second attachment points on the frame above the lever arms and leading around pulleys mounted at the other of the first and second points. From the pulleys each tension member leads over and around a corresponding rotary driving member that is connected through an overrunning clutch to the rear wheel. Means interconnecting the lever arms return one arm to the upper starting position while the other arm is in the downward power stroke.