42 results about "Mechanical amplifier" patented technology

The invention relates to a fine positioning system using an inertial motor based on a mechanical amplifier that comprises a first amplified inertial sub-assembly including a mechanical amplifier, a piezoactive member and a countermass. A second relative drive sub-assembly includes a clamp and a clamped member attached to the first amplified inertial sub-assembly. Asymmetric excitation cycles of the first inertial sub-assembly generate impact forces and movements amplified in a driving direction (z), thus resulting in sliding and adhesion successions of the clamped member in the clamp in order to generate a relative translation movements of the points A and B relative to the point D. The mechanical amplifier increases the step size and reduces the supply inrush currents. Fine and dynamic positioning of the point B relative to the point D can be achieved with augmented strokes using the amplifier.

A proportional micro-valve for regulating the temperature of an electronic component comprising a cooling subsystem associated with each thermal zone of the electronic component, a cooling circuit carries cooling fluid to a heat exchanger associated with each thermal zone, the flow of which is controlled by a valve element, which is in turn controlled by a sensing circuit which reacts to the temperature of the underlying thermal zone to proportionally increase or decrease the rate of cooling fluid flowing through the heat exchanger based upon the temperature of the thermal zone. Cooling fluid substantially continuously flows through the sensing circuit, regardless of whether the valve element is open or closed. The sensing circuit provides feedback to a temperature-responsive mechanical amplifier for opening and closing the valve element.

A bolus, for introduction into a ruminant animal's reticulum to register pressure signals transmitted through fluids therein, has a case unit adapted for immersion in the fluids. A mechanical amplifier element extends out from the case unit and is adapted to be surrounded by the fluids in the reticulum and absorb mechanical energy from the pressure signals. A guide part conveys mechanical energy from the mechanical amplifier element to a sensor module in the interior of the case unit. The sensor module transduces the pressure signals into electric signals from which a processing module extracts data representing body movements, a heart beat rate, a respiratory rate, a respiratory depth and/or stomach activity of the animal. A communication module in the case unit receives the data and transmits output radio signals reflecting the data.

A sound generator includes a transducer converting electric energy to mechanical energy, a mechanical amplifier mechanically amplifying a vibration generated in a piezoelectric component of the transducer, and a radiation plate radiating a sound wave from a signal amplified by the mechanical amplifier, wherein the radiation plate includes a first step having a height for compensating for a first resonance frequency and a second step having a height for compensating for a second resonance frequency.

The method of generation of pulsations of liquid jet consisting in that acoustic pulsations generated by acoustic actuator act directly or indirectly on the pressure liquid in acoustic chamber; generated pressure pulsations are amplified by mechanical amplifier of pulsations and transferred by liquid waveguide fitted with pressure liquid feed to the nozzle and/or nozzle system. Resonant natural frequency of the acoustic system can be matched to the frequency of acoustic pulsations by means of a tuneable resonant chamber. An apparatus is used for implementation of this method comprising the acoustic system, consisting of acoustic actuator (1) that consists advantageously of electromechanical transducer (10) and cylindrical waveguide (11), an acoustic chamber (2) which internal volume being filled with stationary pressure liquid (3), a mechanical amplifier of pulsations (4), and liquid waveguide (6) that is usually metal tubing or hose or combination of both; said acoustic chamber (2) is fitted with mechanical amplifier of pulsations (4) that is connected with the nozzle and/or nozzle system (7) by means of liquid waveguide (6) that is fitted with pressure liquid feed (5). The acoustic system can be complemented with tuneable resonant chamber (9) allowing tuning up of resonant natural frequency of the acoustic system to the driving frequency of pressure pulsations.

This invention discloses a piezoelectric device including: a mechanical amplifier for generating offset output and realizing action force input and a first and a second flexible platforms connected with the mechanical amplifier, in which, the first flexible platform is connected with one end of the amplifier, and the piezoelectric material fixed on the flexible platform is used in bending the first platform, the second platform is connected with the other end of the amplifier and the piezoelectric material fixed on the second platform bends it under control.

An actuator is provided which includes a parallel eccentric gear train, a prime mover having an assembly of piezoelectric elements which drives the gear train and which forms a mechanical amplifier, and a crankshaft which is driven by the parallel eccentric gear train.

Various embodiments are directed to a yarn analyzer comprising a measurement mechanism configured to monitor the local thickness of the yarn moving along a yarn path. The measurement mechanism comprises a fixed member and a displaceable member between which the yarn path passes. The displaceable member is secured relative to a mechanical amplifier comprising a pivotable lever arm at a first end of the pivotable lever arm at a short distance from the pivot axis of the lever arm, and is biased toward the fixed member. The measurement mechanism further comprises a displacement sensor configured to monitor the displacement of a reference component secured relative to a second end of the lever arm at a long distance from the pivot axis. The monitored movement of the reference component is correlated with the thickness of the yarn, such that the yarn thickness is recorded for the length of yarn.

The invention discloses a pipeline pressure pulsation energy collecting device with a supercharging device, and belongs to the technical field of hydroelectric generation and low-power-consumption newenergy. The device is composed of a pressurizing pipeline, a main pipeline, a base, a top cover, a plastic film, a piezoelectric stack, a mechanical amplifier, a piezoelectric frame and a sealing rubber ring. The pressurizing pipeline is connected with the main pipeline through threads, the sealing rubber ring is installed between the pressurizing pipeline and the main pipeline, the piezoelectricstack is pasted on the piezoelectric frame and is connected with the mechanical amplifier through pasting, and the mechanical amplifier is fixed above the main pipeline through a stud. When water flow passes through the pressurizing pipeline, the pressure pulsation of the pipeline is increased and transmitted to the plastic film to generate vibration, and the vibration is transmitted to the piezoelectric stack after passing through the mechanical amplifier, so that the piezoelectric stack deforms to generate electric energy. Since pipeline pressure pulsation is increased, the vibration amplitude generated by the pressure pulsation is amplified and the energy collection efficiency is improved, and the device is simple in structure, low in cost and easy to popularize.

The invention provides three design variants of a piezoelectric actuator that integrates coarse adjustment of threaded rods and fine adjustment of mechanically amplified piezoelectric actions. A mechanical amplifier accommodates one or more preloaded piezoelectric stacks along the longitudinal axis to translate displacement along the transverse axis perpendicular to the displacement of the piezoelectric stack by several orders of magnitude. The output stroke of the piezoelectric amplifier is transmitted to a threaded rod with a ball at the end to push the position adjustment and displacement transformation of the set surface, such as mirror frame and other applications.

A dispensing system (10) includes a piezoelectric stack (40) having a distal end (220) and being configured to expand upon application of a voltage such that the distal end is moved by a first length. The system further includes an amplifier (200) with a primary surface (204) to contact the distal end of the stack and a secondary surface (206), a base configured to contact the secondary surface, and a valve assembly (22) with an outlet orifice (104) and valve element (76). The valve element is configured to move in first and second directions and is coupled with the amplifier. When the distal end is moved by a first length, a portion of the amplifier is moved by a second length that is greater than the first length, and the valve element is moved in a first direction by the second length.

The invention relates to a mechanical amplifier which converts a small motion vibration amplitude to a big motion vibration amplitude. The method includes two or more transverse levers which are serially connected at an angle. An unexpected motion generated in the structure is absorbed by the structure through a torsioning function. Each transverse lever is a mechanical amplifier. A total amplification function is a product of the combination amplification function of the transverse levers which are serially connected. The invention relates to a device including two or more connected transverse levers, wherein the connection angle of the transverse levers is preferably 90 DEG.