A linear drive has at least one rack which is arranged along a longitudinal axis and has a plurality of teeth, a drive shaft arranged in a transverse axis transversely to the longitudinal axis, and at least two propulsion elements, each having at least one propulsion tooth. The at least two propulsion elements are linearly movable in a stroke axis which is oriented transversely to the longitudinal axis and transversely to the drive shaft. The at least two propulsion elements are drivingly coupled to the drive shaft in such a manner that the at least two propulsion elements perform at least one cyclical stroke movement in the course of one rotation of the drive shaft and enter and exit the at least one rack to generate a propulsion in the longitudinal axis. The at least two propulsion elements enter and exit the at least one rack with a phase shift.

Proposed is a portable self-power-generating apparatus which has small size and is capable of charging a battery by realizing self-power generation with high efficiency in emergencies in which normal electricity supply is not available, such as a military operation, a refugee village, a disaster caused by earthquake or the like, an emergency situation on ships, or an outdoor activity, and which can be used in combination with various smart modules.

A bicycle includes a frame having a seat tube, a rear wheel including a drive plate, and a drive system configured to drive rotation of the rear wheel. The drive system includes at least one shaft operably extending in a direction between the seat tube and the rear wheel and arranged to interact with the drive plate. A pair of drive assemblies are located near or at least in part inside the seat tube and are arranged to operably interact with the drive shaft. The at least one drive shaft converts linear motion of the drive assemblies into rotation of the rear wheel without a chain or chainring.

A motion conversion apparatus (110) comprises a rodrack assembly (110) and a gearshaft member (150). The rodrack assembly (110) comprises a first gear connection member (120) and two guide members (140). The gearshaft member (150) comprises a second gear connection member (160) configured to engage with the first gear connection member (120), and a guiding surface arrangement (170) configured to contact the guide members (140). The rodrack assembly (110) is configured to provide rotation of the gearshaft member (150) about a rotational axis (A) by reciprocating linear motion of the rodrack assembly (110) along a first spatial dimension (D1) orthogonal to the rotational axis (A), and/or the gearshaft member (150) is configured to provide reciprocating linear motion of the rodrack assembly (110) along the first spatial dimension (D1) by rotational motion of the gearshaft member (150) about the rotational axis (A). The guiding surface arrangement (170) is configured to simultaneously contact each guide member (140) during at least a portion of the reciprocating linear motion of the rodrack assembly (110).

Embodiments of this application provide an adjustment apparatus, which includes a drive unit; a plurality of adjustment rods correspondingly connected to a plurality of loads, the plurality of adjustment rods are classified into a first adjustment rod group and a second adjustment rod group; a selection unit, where the drive unit is configured to drive the selection unit to be connected to at least one adjustment rod in the first adjustment rod group or at least one adjustment rod in the second adjustment rod group; a shift unit, where the shift unit is configured to enable the selection unit to be switched between the first adjustment rod group and the second adjustment rod group; and an adjustment unit, where the drive unit is configured to drive the adjustment unit to drive the adjustment rod connected to the selection unit to move.

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.

The present application is directed to a system for converting linear motion to rotary motion. The system includes at least first and second cylinders. The first and second cylinders are in fluid communication with each other. The system also includes a first piston. The first piston is slidably disposed in the first cylinder. The system further includes a second piston. The second piston is slidably disposed in the second cylinder. The first and second cylinders contain an incompressible fluid. The first piston is in operative connection with the second piston such that movement of the first piston in a first direction causes movement of the second piston in a second direction, wherein the second direction is opposite the first direction.

In a compressor for discharging a medium, in particular tire sealant that is to be discharged from a container into a tire, wherein a motor (1) of the compressor (P) drives a step-up transmission wheel (3, 3.1) for moving at least one piston (6-6.6) in a compression chamber (7), the step-up transmission wheel (3, 3.1) is intended to be provided only partially on its circumference with a toothing (20) and/or to consist of two toothed wheels (11, 12) lying on each other.

A reciprocating linear/rotational motion conversion device has a main shaft, a linear motion guiding mechanism, a sector gear and a rack frame. The sector gear is fixedly connected with the main shaft. A rack pair is arranged on the inner wall of the rack frame. The rack pair comprises a first gear rack and a second gear rack separately arranged on both sides of the sector gear. The reciprocating linear/rotational motion conversion device further includes a reversing mechanism fixedly connected with the main shaft. A cylinder device contains the reciprocating linear/rotational motion conversion device, connecting rods, pistons and cylinder bodies. The cylinder body is sleeved on the piston, and a cylinder head is arranged on one end of the cylinder body.

In one version there is provided a shaft locking assembly for use in an apparatus, to provide motion control and unwanted movement elimination of the apparatus. The shaft locking assembly includes a locking device with a locking shaft having a castellated ring element with castellations. The shaft locking assembly includes a drive shaft and a rotating element disposed around the drive shaft. The shaft locking assembly includes a retaining structure assembly having a side portion with projection members corresponding to the castellations. The shaft locking assembly is in a locked position when the castellations are engaged and interlocked with the projection members, and the shaft locking assembly is in an unlocked position when a shaft engagement device is engaged with the drive shaft and the locking shaft, and actuates the locking shaft, so that the castellations are disengaged and unlocked from the projection members, and rotates the drive shaft.