A device for adjusting the height of a first part relative to a second part includes a first hollow profiled element, a second hollow profiled element which is displaceable along its longitudinal axis relative to the first hollow profiled element, a drive unit for displacement of the second hollow profiled element relative to the first hollow profiled element and a support unit which, in relation to the longitudinal axis, is arranged between the first hollow profiled element and the second hollow profiled element for the purpose of supporting the first hollow profiled element against the second hollow profiled element.

A device for adjusting the height of a first part relative to a second part includes a first hollow profiled element, a second hollow profiled element which is displaceable along its longitudinal axis relative to the first hollow profiled element, a drive unit for displacement of the second hollow profiled element relative to the first hollow profiled element and a support unit which, in relation to the longitudinal axis, is arranged between the first hollow profiled element and the second hollow profiled element for the purpose of supporting the first hollow profiled element against the second hollow profiled element.

The system of the preferred embodiments is a transmission including: at least two axle segments; at least one crank arm attached at one end to each axle segment, wherein the space between the at least two crank arms has a gap between the at least two axle segments; a connecting rod; a connecting axle rotatably connected to one end of the connecting rod, wherein the connecting axle is attached at either end to the at least two crank arms; an actuator adapted to move the attachment point between the connecting axle and the at least two crank arms up and down the length of the at least two crank arms; at least one of a wheel and a crank arm with a pivot axle connected at least one of near the periphery of the wheel and near the end of the crank arm, wherein the distal end of the connecting rod is rotatably connected to the pivot axle; a one way clutch connected to the wheel and connected to a rear axle; a drive gear connected to the rear axle and adapted to output drive power. The transmission of the first preferred embodiments is preferably designed to provide a compact transmission that does not use a derailleur and limits or does not use a chain at all, while being suitable for use on human powered vehicles like bicycles and having the potential in some variations of providing continuous variability in ratio of input axle rotation to output axle rotation. The system of the preferred embodiments may, however, be used for any suitable purpose.

The present disclosure is an all gear infinitely variable transmission that is non-dependent on friction. It can be used in high torque applications, offering a steady and uniform output for a steady and uniform input. Since it allows a co-axial input and output, by using a planetary gear system the output can be made continuous from forward to reverse. It uses a “scotch-yoke” mechanism to convert rotational motion to a linear reciprocating motion. The linear distance of this reciprocating motion—“stroke” is changed by altering the crankpin location of the scotch-yoke mechanism. This reciprocating motion is converted to a rocking motion by using a “rack and pinion” and later converted to a unidirectional motion via a One-Way-Bearing. A set of non-circular gears are used to achieve a steady and uniform output. It employs a very simple mechanism to change the ratio between the input and output of the transmission.

The present disclosure is an all gear infinitely variable transmission that is non-dependent on friction. It can be used in high torque applications, offering a steady and uniform output for a steady and uniform input. Since it allows a co-axial input and output, by using a planetary gear system the output can be made continuous from forward to reverse. It uses a “scotch-yoke” mechanism to convert rotational motion to a linear reciprocating motion. The linear distance of this reciprocating motion—“stroke” is changed by altering the crankpin location of the scotch-yoke mechanism. This reciprocating motion is converted to a rocking motion by using a “rack and pinion” and later converted to a unidirectional motion via a One-Way-Bearing. A set of non-circular gears are used to achieve a steady and uniform output. It employs a very simple mechanism to change the ratio between the input and output of the transmission.

The invention relates to a pull type transmission system, which comprises a pull mechanism. The pull mechanism at least comprises a coaxial column, the coaxial column is formed by connecting rotary discs with different diameters, and planes connecting the rotary discs with different diameters are connecting faces. The pull mechanism is provided with a rope tying position, the rope tying position is arranged on a side face of the pull mechanism, and the pull rope is connected to the pull mechanism through the rope tying position at one end and is wound around the rotary discs. The pull mechanism is connected to a resilience mechanism and is used for retracting the pull rope after the pull rope is pulled out. The invention provides a non-electric pull type transmission system. The corresponding rotating gears can be changed through simple up-down pulling actions without having to shut down and replace equipment or interrupt the pulling operation, making the use more convenient.

The invention relates to a pull type transmission system, which comprises a pull mechanism. The pull mechanism at least comprises a coaxial column, the coaxial column is formed by connecting rotary discs with different diameters, and planes connecting the rotary discs with different diameters are connecting faces. The pull mechanism is provided with a rope tying position, the rope tying position is arranged on a side face of the pull mechanism, and the pull rope is connected to the pull mechanism through the rope tying position at one end and is wound around the rotary discs. The pull mechanism is connected to a resilience mechanism and is used for retracting the pull rope after the pull rope is pulled out. The invention provides a non-electric pull type transmission system. The corresponding rotating gears can be changed through simple up-down pulling actions without having to shut down and replace equipment or interrupt the pulling operation, making the use more convenient.

This invention is an all gear continuously variable transmission that is non-dependent on friction. It can me be used in high torque applications. It offers a steady and uniform output for a steady and uniform input. It allows a co-axial input and output thereby by using a planetary gear system the output can be made continuous from forward to reverse. This uses a “scotch-yoke” mechanism to convert rotational motion to a linear reciprocating motion. The linear distance of this reciprocating motion-“stroke” is changed by altering the crankpin location of the scotch-yoke mechanism. This reciprocating motion is converted to a rocking motion by using a “rack and pinion” and later converted to a unidirectional motion via a One-Way-Bearing. A set of non-circular gears are used to achieve a steady and uniform output. It employs a very simple mechanism to change the ratio between the input and output of the transmission.

This invention is an all gear continuously variable transmission that is non-dependent on friction. It can me be used in high torque applications. It offers a steady and uniform output for a steady and uniform input. It allows a co-axial input and output thereby by using a planetary gear system the output can be made continuous from forward to reverse. This uses a “scotch-yoke” mechanism to convert rotational motion to a linear reciprocating motion. The linear distance of this reciprocating motion-“stroke” is changed by altering the crankpin location of the scotch-yoke mechanism. This reciprocating motion is converted to a rocking motion by using a “rack and pinion” and later converted to a unidirectional motion via a One-Way-Bearing. A set of non-circular gears are used to achieve a steady and uniform output. It employs a very simple mechanism to change the ratio between the input and output of the transmission.

This invention is an all gear infinitely variable transmission that is non-dependent on friction. It can me be used in high torque applications. It offers a steady and uniform output for a steady and uniform input. It allows a co-axial input and output thereby by using a planetary gear system the output can be made continuous from for to reverse. This uses a scotch-yoke mechanism to convert rotational motion to a linear reciprocating motion. The linear distance of this reciprocating motionstroke is changed by altering the crankpin location of the scotch-yoke mechanism. This reciprocating motion is converted to a rocking motion by using a rack and pinion and later converted to a unidirectional motion via a One-Way-Bearing. A set of non-circular gears are used to achieve a steady and uniform output. It employs a very simple mechanism to change the ratio between the input and output of the transmission.