A vehicle shutter device includes first and second flaps, one actuator, and a link mechanism. The link mechanism includes a connecting rod that couples the flaps to each other such that the flaps rotate in synchronization with each other. The shutter device is provided with stoppers configured to prohibit each of the flaps from being displaced beyond a normal opening and closing range when the link mechanism is in a normal state. When coupling between the connecting rod and the first flap is released in the first pivotally attaching portion in a state where coupling between the connecting rod and the second flap is maintained in the second pivotally attaching portion, the actuator is allowed to rotate beyond a normal rotation range of the actuator corresponding to the normal opening and closing ranges of the first and second flaps.

A transmission device for a power-driven cutting tool includes a base, a transmission component, a linking component, a shaft component and a link component. The base has a through cavity, a sleeve and a receiving portion. The transmission component is penetratingly disposed in the through cavity, so as to couple the transmission component and the base together. The linking component is penetratingly disposed in the sleeve, so as to couple the linking component and the base together. The shaft component and the link component are disposed in the base. A power source drives the linking component and thereby sequentially drives the shaft component, link component, and transmission component, allowing a cutter of the power-driven cutting tool to undergo reciprocating displacements along a linear path for performing a cutting operation. The transmission device features enhanced structural rigidity, allowing the cutter to move back and forth along a linear track.

Device and method for enabling independent tuning of frequency and amplitude of a reverse crankshaft motor. The reverse crankshaft motor provides periodic reciprocating motion based on periodic rotational motion from a rotational motor. The reverse crankshaft motor includes a crankshaft structure having first and second frames with a third axle arranged between them and connected to them by hinges. An amplituder is affixed to the third axle and may communicate with an external device. As the first and second frames move toward or apart from each other, the third axle moves radially toward or away from a central axis of the crankshaft structure. The position of the third axle determines the amplitude of the periodic reciprocating motion of the amplituder. By adjusting the position of the first and second frames, the operator may adjust the amplitude independently from the frequency of the periodic rotational motion supplied by the rotational motor.

The subject matter of this specification can be embodied in, among other things, a linear-to-rotary apparatus that includes a linear actuator having an actuator housing including a piston chamber, a piston shaft disposed in the piston chamber, and a rotor apparatus. The rotor apparatus includes a rotary joint defining a rotational axis, a rotor arm extending radially from the rotary joint and configured to at least partially pivot about the rotary joint, and a torque linkage pivotably connected to the rotor arm. The torque linkage is also attached to an end of the piston shaft of the piston at a pivot connection joint, where the pivot connection joint defines a pivot axis that is substantially perpendicular to the translation axis of the piston shaft.

The subject matter of this specification can be embodied in, among other things, a linear-to-rotary apparatus that includes a linear actuator having an actuator housing including a piston chamber, a piston shaft disposed in the piston chamber, and a rotor apparatus. The rotor apparatus includes a rotary joint defining a rotational axis, a rotor arm extending radially from the rotary joint and configured to at least partially pivot about the rotary joint, and a torque linkage pivotably connected to the rotor arm. The torque linkage is also attached to an end of the piston shaft of the piston at a pivot connection joint, where the pivot connection joint defines a pivot axis that is substantially perpendicular to the translation axis of the piston shaft.

A fixed crank driving mechanism is provided, and belongs to the field of a crank driving mechanism, including a servo motor provided at one side of a fixed template, where the servo motor is in transmission connection with a rotating shaft, each end of two ends of the rotating shaft is connected with a crank, a tip end of the crank is movably connected with an elbow-shaped transmission arm, the elbow-shaped transmission arm is movably connected with a piston rod of an oil cylinder through a connecting seat, the connecting seat and the oil cylinder are fixedly provided on a movable template, the movable template is movable along guide posts, and one end of each of the guide posts is vertically and fixedly connected with the fixed template. The fixed crank driving mechanism reduces the weight of the movable template and the load of the servo motor.

A fixed crank driving mechanism is provided, and belongs to the field of a crank driving mechanism, including a servo motor provided at one side of a fixed template, where the servo motor is in transmission connection with a rotating shaft, each end of two ends of the rotating shaft is connected with a crank, a tip end of the crank is movably connected with an elbow-shaped transmission arm, the elbow-shaped transmission arm is movably connected with a piston rod of an oil cylinder through a connecting seat, the connecting seat and the oil cylinder are fixedly provided on a movable template, the movable template is movable along guide posts, and one end of each of the guide posts is vertically and fixedly connected with the fixed template. The fixed crank driving mechanism reduces the weight of the movable template and the load of the servo motor.

A compressor includes a low pressure stage having a low pressure cylinder, a high pressure stage having a high pressure cylinder, a low pressure piston guided in an axially movable manner in the low pressure cylinder, a high pressure piston guided in an axially movable manner in the high pressure cylinder, a piston rod rigidly connecting the low pressure piston and the high pressure piston, and a sliding block guide. The sliding block guide includes a recess arranged in the piston rod and further includes two substantially parallel sliding block tracks. One of the sliding block tracks has an arc-shaped indentation in a central portion. The sliding block tracks are constructed and such that a movement of the low pressure piston and of the high pressure piston follows a piston stroke curve that deviates from a regular sinusoidal stroke curve.

An electrical power generating apparatus with one or more platforms, securely positioned on a surface, for example, highways are disclosed. The platform is comprised of one or more cavities, configured to receive push force to rotating force conversion systems and one or more generators. The platform further comprises a plurality of protrusions, configured to move upward and downward via a reset member via a plurality of apertures on a top portion of the platform. At least one protrusion is connected to the push force to rotating force conversion system. The generators are coupled to a shaft that is rotated by the push force to rotation force conversion system and configured to generate electrical power when an external force is applied on at least any one of a protrusion by a moving object. The generated electric power is transferred to an electric power grid and electric storage devices using conductors.

The subject matter of this specification can be embodied in, among other things, a linear-to-rotary apparatus that includes a linear actuator having an actuator housing including a piston chamber, a piston shaft disposed in the piston chamber, and a rotor apparatus. The rotor apparatus includes a rotary joint defining a rotational axis, a rotor arm extending radially from the rotary joint and configured to at least partially pivot about the rotary joint, and a torque linkage pivotably connected to the rotor arm. The torque linkage is also attached to an end of the piston shaft of the piston at a pivot connection joint, where the pivot connection joint defines a pivot axis that is substantially perpendicular to the translation axis of the piston shaft.