31 results about "Oscillatory power" patented technology

A cutting saw blade for use with an oscillatory power tool used in surgical bone cutting procedures including a blade having a distal end provided with teeth whose tips are located on a tangent line perpendicular to the long axis of the blade. The teeth are configured substantially as right triangles with their hypotenuses facing either towards the center of the blade or away from the center of the blade. A central tooth can be optionally provided. The surgical saw blade may have a distal end having at least one pair of teeth configured to be adjacent to each other and each of the pair of teeth is configured as a right triangle each having a hypotenuse which is oriented at least one of towards and away from the centrally positioned long axis.

The invention discloses a portable tool having a housing with a gearhead, having a motor shaft which can be rotationally driven by a motor and which can be coupled via an eccentric coupling drive to a tool spindle for the drive thereof, wherein the tool spindle can be driven in a rotational oscillatory manner about the longitudinal axis thereof and is configured for accommodating a tool, wherein a motion-reversal drive is provided which is configured for converting an oscillating drive movement produced by the eccentric coupling drive into an oscillating output movement which has a direction of oscillation opposed to said drive movement. The motion-reversal drive is configured as an epicyclic gearing.

A densifier is provided which in one embodiment can simultaneously densify two cryogenic liquids at different temperatures. The densifier has an oscillatory power source for generating oscillatory power and a two stage pulse tube refrigerator. The oscillatory power source can be a thermoacoustic heat engine or a mechanical oscillatory power source such as a linear flexure bearing compressor. The first stage densifies a first cryogenic liquid to a first cryogenic temperature, and the second stage densifies a second cryogenic liquid to a second, lower cryogenic temperature. A densified propellant management system also is provided which has a densifier for simultaneously densifying two cryogenic liquids at different temperatures, and a cryogenic temperature probe for measuring the temperature gradient in a cryogenic liquid.

An oscillatory power tool that is capable of using various types of cutting tools is disclosed. The power tool includes an output shaft for mounting one of the cutting tools and driving the cutting tool in an oscillating rotary motion. An end of the output shaft has a driving section for engaging with a securing section of the cutting tool. The power tool further includes a fastener connected to the output shaft at the end and connectable to the securing section of the cutting tool for fastening the cutting tool to the end of the output shaft. The driving section has a fitting surface for contacting a surface of the securing section. Through a close fit between the friction surface and the surface of the securing section, the power tool can be connected with different types of cutting tools, which greatly improves the universality and convenience of the power tool.

An oscillatory power tool that is capable of using various types of cutting tools is disclosed. The power tool includes an output shaft for mounting one of the cutting tools and driving the cutting tool in an oscillating rotary motion. An end of the output shaft has a driving section for engaging with a securing section of the cutting tool. The power tool further includes a fastener connected to the output shaft at the end and connectable to the securing section of the cutting tool for fastening the cutting tool to the end of the output shaft. The driving section has a fitting surface for contacting a surface of the securing section. Through a close fit between the friction surface and the surface of the securing section, the power tool can be connected with different types of cutting tools, which greatly improves the universality and convenience of the power tool.

The invention belongs to the technical field of ultrafast lasers, and discloses a high-brightness main oscillation power amplifying picosecond laser system, comprising an all-polarization-maintaining fiber picosecond seed laser, a fiber collimator, a space isolator, 45° total reflection mirror, polarization beam splitter prism, one-stage solid-state traveling wave amplifier, two-stage solid-state traveling wave amplifier and three-stage solid-state traveling wave amplifier, the first-stage solid-state traveling wave amplifier is located on the transmitted light side of the polarization beam splitter The wave amplifier is located on the reflected light side of the polarization beam splitter prism, and the fiber collimator is connected to the all polarization maintaining fiber picosecond seed laser through the pigtail. The picosecond laser system disclosed by the invention has the advantages of simple structure, stable performance and easy maintenance, and can realize high-brightness 1064 nm laser output. By setting up a frequency doubling module that is easy to integrate and disassemble, based on 100W fundamental frequency light, it can achieve more than 50 W The green light output can meet the needs of a wide range of industrial applications.

Disclosed are a method and circuit for 75o KHz high voltage gas discharge lamp driving. The circuit comprises a high voltage rectification filter unit and a direct-current voltage reduction and stabilization unit, and the output of the voltage reduction and stabilization unit is connected with a control chip in an intelligent oscillation control unit; square signals output by two pins of the control chip are set to be 750 KHz; meanwhile, the falling edge of the square signal output by the first pin is made to be earlier than the rising edge of the square signal output by the second pin by a certain time, and the rising edge of the square signal output by the first pin is made to be later than the rising edge of the square signal output by the second pin by a certain time. The method and circuit have the advantages that according to the scheme, the method and system can be away from an acoustic resonance window area, second-order conversion is adopted, electric energy losses are small, electric energy conversion efficiency is improved, stroboflash does not exist, and optical efficiency is high. The selected control chip is low in price and strong in function, the drive frequency and the half-bridge oscillatory power unit dead time of the high voltage gas discharge lamp can be controlled, the process is simple and convenient to implement, the rate of finished products is high, and batch production is facilitated.

The invention discloses a method and a device for obtaining oscillating power under grid transient faults. When grid transient faults occur in power electronic equipment, the method first measures the inductance voltage and current of the network inductance branch, and measures the inductance voltage and current respectively. Perform Hilbert transform; then calculate the instantaneous resistance represented by the network inductance branch according to the inductor voltage, current, Hilbert transform voltage parameter, and Hilbert transform current parameter; and calculate the network inductance branch The instantaneous power of ; extract the power consumed by the instantaneous resistance related to the instantaneous resistance from the instantaneous power, and use the power consumed by the instantaneous resistance as the oscillation power. The invention can help to solve the existing problems that the amplitude frequency of the internal potential of the power electronic equipment changes with the imbalance of the input and output power of the equipment, and the change of the amplitude and frequency of the internal potential will adversely affect the input and output power imbalance of the equipment through the network. There are flaws in the technology.