Abstract:
The invention discloses a ratchet-driven self-propelled scooter, comprising a scooter body and a transmission mechanism set on the scooter body; the invention provides a manpower self-propelled scooter with simple structure, light weight and low cost; step on a driving pedal to put a driving clamp in motion, thereby a pressing arm wheel drives a ratchet arm, then a ratchet pawl leads an axle to drive the rear traveling wheels to rotate, so that the scooter body moves; after releasing the driving pedal, the driving pedal is reset through a torsion spring, likewise repeatedly stepping to increase the driving force for the scooter body; the device possesses a complete scheme, simple structure, convenient operation, low cost, which is worthy of widespread promotion.
Abstract:
The invention discloses a ratchet-driven self-propelled scooter, comprising a scooter body and a transmission mechanism set on the scooter body; the invention provides a manpower self-propelled scooter with simple structure, light weight and low cost; step on a driving pedal to put a driving clamp in motion, thereby a pressing arm wheel drives a ratchet arm, then a ratchet pawl leads an axle to drive the rear traveling wheels to rotate, so that the scooter body moves; after releasing the driving pedal, the driving pedal is reset through a torsion spring, likewise repeatedly stepping to increase the driving force for the scooter body; the device possesses a complete scheme, simple structure, convenient operation, low cost, which is worthy of widespread promotion.
Abstract:
Provided is an exercise device for performing exercises suitable to strengthen thigh and hip muscles such as a leg press machine, a total hip, and more particularly provides an exercise device for strengthening thigh and hip muscles while protecting the knees and ankle joints by enabling a user to locate a lower end of an arm on the user's thigh in a sitting or lying position and move the user's legs in order to minimize a load or stress added to the knee and ankle joints.
Abstract:
The present invention relates to a foldable tricycle, operable between a first mode of operation steerable by a tricycle rider, and a second mode of operation steerable by an attendant pushing the tricycle. The tricycle comprising: a pair of rear wheels; a foldable seat comprising a chair and a back support, for accommodating said tricycle rider; a foldable arm rest, connected to said foldable seat; a parental handle, for steering said tricycle by said attendant pushing the tricycle; a main frame, configured to rotatably hold said rear support, to support said foldable seat, to rotatably support said rider handle, to rotatably support said fork; and a latching mechanism, capable of locking and unlocking the rotatable movement, of the rear support, in relations to the main frame.
Abstract:
A device for bicycles or other pedal-powered vehicles is fitted with at least one crank that has a pedal at one end and a crank box on the other. The crank box is fitted with a flute and contiguous to a fixed structure fitted with a pin. The movement of the crank is limited by the pin's movement in the flute. The crank box has a torsion spring nested within it. The device is fitted with a braking mechanism of the crankshaft's sprockets, in that these sprockets engage with sprockets of a transmission box, connecting the transmission box to the toothed shaft's box. The sprockets of the transmission box, in turn, transmit their movement to the outer shaft.
Abstract:
Vehicle including a frame, a seat mounted to the frame, wheels rotatably mounted on the frame, and drive mechanisms for causing rotation of one wheel. Each drive mechanism includes an arm pivotally attached to the frame at one end, a weight and attached pedal at an opposite end of the arm, and a guide member including a bump and that moves in conjunction with movement of the weight. The guide member has a first end region at which the guide member is pivotally attached to the frame and a second, opposite end region which is free. A roller attached to the arm moves along the guide member during pivotal movement of the arm to cause pivoting of the guide member as the roller engages with the bump. An energy transfer system converts pivotal movement of the guide member into motive power to rotate the wheel.
Abstract:
Demountable devices for transformation of treadle lever rocking movement into rotary movement of bicycle's drive shaft consist of two main units: redesigned driving unit for conventional bicycles and a reverse gear. Both units interact with each other through a flexible transmission. The devices can be mounted on most conventional bicycles. Bicycle's movement is provided by regular pressing of the cyclist's leg on the treadle lever. Length of the treadle lever can be adjustable.
Abstract:
Vehicle including a frame, a seat mounted to the frame, wheels rotatably mounted on the frame, and drive mechanisms for causing rotation of one wheel. Each drive mechanism includes an arm pivotally attached to the frame at one end, a weight and attached pedal at an opposite end of the arm, and a guide member including a bump and that moves in conjunction with movement of the weight. The guide member has a first end region at which the guide member is pivotally attached to the frame and a second, opposite end region which is free. A roller attached to the arm moves along the guide member during pivotal movement of the arm to cause pivoting of the guide member as the roller engages with the bump. An energy transfer system converts pivotal movement of the guide member into motive power to rotate the wheel.
Abstract:
Some embodiments of the present invention disclose a bicycle propulsion system. The propulsion system includes a frame. The propulsion system includes a wheel rotably coupled to the frame. The propulsion system includes a drive wheel for rotating the wheel. The propulsion system has a pedal. The propulsion system includes a crank lever having a proximate end coupled to the frame and a distal end coupled to the pedal. The propulsion system includes a cam rotably coupled to the crank lever between the distal and proximate ends, wherein the cam comprises a pair of connecting members that when connected form a shaft positioned away from a center of the cam. The propulsion system includes a drive lever having a proximate end comprising a cam follower interfaced to the cam and a distal end coupled to the drive wheel.
Abstract:
The present invention concerns a device (1) for bicycles or other pedal-powered vehicles, fitted with at least one crank (3) that has a pedal at one end (2) and a box on the other (4), with said box (4) being fitted with a flute and contiguous to a fixed structure fitted with a pin, characterized in that the movement of the crank is limited by the pin's movement in said flute, in that the box (4) nests a torsion spring within it, in that the device is fitted with a braking mechanism of the crankshaft's (24) sprockets, in that these sprockets (24) engage in the sprockets of the transmission box, connecting this box to the toothed shaft's box (63) and in that the sprockets of the transmission box, in turn, transmit their movement to the outer shaft.