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Direct mechanical coupling

Subclass of:

310 - Electrical generator or motor structure

310300000 - NON-DYNAMOELECTRIC

310311000 - Piezoelectric elements and devices

310321000 - Combined with resonant structure

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
310323020 Motor producing continual motion 206
310323210 Detector (e.g., sensor) 9
310323170 Positions an object 9
310323180 Device performs work on an object (e.g., welding, cutting) 4
20090146530SPINDLE AND FLEXIBLE HINGE USED IN ULTRASONIC MACHINE - A spindle used in an ultrasonic machine for transmitting vibration to a working tool of the ultrasonic machine is disclosed. The spindle includes a main body, a rotor disposed in the main body, an elastic clamping unit disposed in the rotor, a vibrating unit having one end thereof connected to the inner wall of the rotor while the other end connected to the elastic clamping unit, and a pre-pressure unit penetrating the rotor and one end thereof connected to the elastic clamping unit to provide the elastic clamping unit with rigidity against the rotor, thereby making the elastic clamping unit provide pre-pressure to the vibrating unit which further provides the elastic clamping unit with vibration against the rotor. The present invention further provides a flexible hinge for the spindle.06-11-2009
20120293044Ultrasonic torsional mode and longitudinal-torsional mode transducer - The present invention relates to the design of piezoelectric transducer subassemblies and systems primarily intended for medical and dental applications. The invention also provides transducer subassemblies and systems with improved performance and a capability to operate more efficiently in torsional or a combined longitudinal-torsional mode of vibration. The invention enables the size and weight of torsional mode transducers to be reduced. Additionally, the electrical characteristics of these transducer systems are improved, thus enabling the transducer end effector to deliver more power to the operative site.11-22-2012
20080238255VIBRATION ASSISTED MACHINING SYSTEM WITH STACKED ACTUATORS - A vibration assisted machining (VAM) system, including: a frame; a vibration element mechanically coupled to the frame; a cutting tool holder connected to the vibration element; and a workpiece holder coupled to the frame. The vibration element includes a first piezoelectric (PZT) actuator and a second PZT actuator, which are adapted to generate a substantially elliptical tool path in a vibration plane of the VAM system. The VAM system also includes a third PZT actuator coupled between the frame and either the vibration element or the workpiece holder. This third PZT actuator is coupled to the frame such that its polarization axis is substantially in the vibration plane and substantially perpendicular to the feed direction of the VAM system.10-02-2008
20100127599ULTRASONIC TRANSDUCER - An ultrasonic transducer comprises an elongate horn, a counterpiece, two piezoelectric drives and a screw. The counterpiece is fastened to the horn by means of the screw and thus clamps the piezoelectric drives, which are arranged on either side of a longitudinal axis of the ultrasonic transducer, between the horn and the counterpiece. The ultrasonic transducer is designed in such a way that the tip of a capillary which is clamped in the horn can oscillate in two different directions.05-27-2010
310323190 Horn or transmission line 2
20090236938Ultrasonic torsional mode and longitudinal-torsional mode transducer system - The present invention relates to the design of piezoelectric transducer subassemblies and systems primarily intended for medical and dental applications. The invention also provides transducer subassemblies and systems with improved performance and a capability to operate more efficiently in torsional or a combined longitudinal-torsional mode of vibration. The invention enables the size and weight of torsional mode transducers to be reduced. Additionally, the electrical characteristics of these transducer systems are improved, thus enabling the transducer end effector to deliver more power to the operative site.09-24-2009
20090001853ULTRASOUND TRANSDUCER MANUFACTURED BY USING MICROMACHINING PROCESS, ITS DEVICE, ENDOSCOPIC ULTRASOUND DIAGNOSIS SYSTEM THEREOF, AND METHOD FOR CONTROLLING THE SAME - An ultrasound transducer manufactured by using a micromachining process comprises: a first electrode into which a control signal for transmitting ultrasound is input; a substrate on which the first electrode is formed; a second electrode that is a ground electrode facing the first electrode with a prescribed space between the first and second electrodes; a membrane on which the second electrode is formed and which vibrates and generates the ultrasound when a voltage is applied between the first and second electrodes; a piezoelectric film contacting the membrane; and a third electrode electrically continuous to the piezoelectric film.01-01-2009
Entries
DocumentTitleDate
20110266919DETECTION SENSOR AND RESONATOR OF DETECTION SENSOR - A detection sensor (11-03-2011
20090015099VIBRATION ACTUATOR AND DRIVE UNIT INCLUDING THE SAME - An ultrasonic actuator includes an actuator body, a case and a support rubber. The support rubber is made of conductive rubber having alternately stacked insulating layers and conductive layers and arranged between the case and the actuator body such that an external electrode and an electrode is brought into conduction and applies in advance a compressive force in the direction of longitudinal vibration to the actuator body at a non-node part of the vibration of the actuator body. The support rubber is arranged such that the stacking direction of the conductive rubber intersects with a plane including the direction of longitudinal vibration and the direction of bending vibration of the actuator body.01-15-2009
20110140574Electronic Component Device and Method for Manufacturing the Same - A vibratory device includes an elastic plate and a piezoelectric diaphragm. The elastic plate includes a fixable portion, a vibratory portion, and a connection portion. The fixable portion is fixed to a fixation member. The vibratory portion is spaced away from a fixable surface of the fixable portion that faces the fixation member and arranged substantially in parallel with the fixable surface. The connection portion connects a first end of the fixable portion in its planar direction and a first end of the vibratory portion in its planar direction. The piezoelectric diaphragm is disposed on a surface of the vibratory portion that is adjacent to the fixable portion. In a direction N normal to the surface of the vibratory portion adjacent to the fixable portion, at least part of the second piezoelectric diaphragm does not overlap the fixable portion.06-16-2011
20110227452RESONATOR ELEMENT, RESONATOR, ELECTRONIC DEVICE, AND ELECTRONIC APPARATUS - A resonator element includes at least one resonating arm that vibrates in a torsional mode, wherein the resonating arm includes a structural portion having a first portion disposed in a first direction in a sectional view in the width direction and a second portion connected to the first portion so that the center of gravity departs from the center of gravity of the first portion in the first direction and a second direction perpendicular to the first direction, wherein the first portion vibrates in a stretch mode in the length direction of the resonating arm with an application of a voltage, and wherein the second portion does not substantially vibrate in the stretch mode in the length direction of the resonating arm with the application of the voltage or vibrates in a stretch mode with a phase different from that of the first portion.09-22-2011
20090167110Broad band energy harvesting system and related methods - A broad band energy harvesting system to harvest energy from a structure and associated methods are provided. The system includes a structure carrying a plurality of environmentally produced vibration frequencies extending over a frequency range and an energy harvesting apparatus positioned in vibration receiving communication with the structure to harvest energy from the structure. Each energy harvesting apparatus includes broadly tuned energy harvesting generators having relatively low quality factor and corresponding relatively wide bandwidth. The energy harvesting generators collectively provide energy harvesting over multiple modes to thereby provide energy harvesting over a substantial portion of the frequency range. Each energy harvesting generator can include a cantilevered beam connected to a common backbone comprised of a resilient material configured to transfer energy between adjacent generators to further enhance energy harvesting.07-02-2009
20110095649VIBRATING DEVICE - A vibrating device that includes a small number of components and that has a high vibration transmission efficiency is provided. The vibrating device is fixed to a fixing member. The vibrating device includes a single elastic plate and piezoelectric vibrating plates. The elastic plate includes a fixing portion, a vibrating portion, and a connecting portion. The fixing portion is attached to the fixing member. The vibrating portion is arranged to be substantially parallel to and spaced from a fixing surface at which the fixing portion is fixed to the fixing member. The connecting portion connects an end part of the fixing portion and an end part of the vibrating portion to each other. The piezoelectric vibrating plates are provided on surfaces of the vibrating portion.04-28-2011
20120146459VIBRATION TYPE DRIVING APPARATUS - A vibrator according to an aspect of the present invention is provided with an adjustment region which is realized with use of an electro-mechanical energy conversion element that is designed for an adjustment on a resonance frequency, and an impedance element is arranged to be connected to the adjustment region.06-14-2012
20110156533ENERGY CONVERTERS AND ASSOCIATED METHODS - Energy converters and associated methods are disclosed herein. In one embodiment, an energy converter includes a first structural member spaced apart from a second structure member, a first piezoelectric element and a second piezoelectric element individually coupled to the first structural member and the second structural member, and a deflection member tensionally suspended between the first and second piezoelectric elements. The deflection member is substantially rigid.06-30-2011
20120119619High speed optical scanning mirror system using piezoelectric benders - A construction is presented, which is comprised of two piezoelectric bending cantilevers, of different lengths, called a first bender and a second bender respectively, in which both benders bend in opposite directions. The second bender is mechanically in series connected to the first bender, thereby increasing the rotation angle of the tip of the second bender. The length of the second bender is chosen thus that in sinusoidal excitation, the tip of the second bender remains at the same point throughout the entire cycle, while it does undergo rotation. In this fashion a virtual axis at the tip of the second bender is created. The width of both benders is chosen such that the moment that the second bender can exert on an object that is connected to it, enables the construction to drive an optical element to scanning vibratory rotary motion with a large angle at high frequencies.05-17-2012
20120074812Piezoelectric Power Generator and Wireless Sensor Network Apparatus - A piezoelectric power generator that includes a piezoelectric multilayer body including a piezoelectric element that converts vibration into electricity and a substrate on which the piezoelectric multilayer body is mounted. The resonant frequency of the piezoelectric element coincides with the reference of the substrate so that the piezoelectric element efficiently vibrates. The addition of vibration portions in the substrate allows various resonant frequencies to be set.03-29-2012
20120228996DRIVING APPARATUS - A driving apparatus (09-13-2012
20080284284RESONANT ACTUATOR - A resonant actuator includes a driving unit having a displacement element that vibrates at a resonance frequency or in a frequency range in the vicinity of a resonance frequency and having a driven member that is driven by the displacement element, in which the displacement element has a piezoelectric ceramic body made of a bismuth layered compound. The displacement direction of the displacement element is preferably substantially the same as the direction of polarization of the piezoelectric ceramic body. The bismuth layered compound is preferably oriented such that the direction of the c crystallographic axis is substantially perpendicular to the direction of polarization of the piezoelectric ceramic body. More preferably, the degree of c-axis orientation is determined to be at least about 75% by the Lotgering method. Thereby, it is possible to provide a resonant actuator having a large saturated vibration velocity, minimizing reductions in the resonance frequency fr and the mechanical quality factor Qm without the destabilization of the vibration velocity even at a high vibration velocity, and having a large amount of displacement even at a high electric field.11-20-2008
20120274180VIBRATION WAVE DRIVING APPARATUS AND MANUFACTURING METHOD OF VIBRATION BODY - A vibration wave driving apparatus according to the present invention includes a vibrator having at least a vibration body formed with a projecting portion having spring characteristics and an electro-mechanical energy conversion element, the vibration wave driving apparatus using motion of the projecting portion to drive a driven body in contact with the projecting portion, wherein the vibration body includes a base portion and the projecting portion, the projecting portion includes two wall portions formed in parallel to a direction orthogonal to a drive direction of the driven body extending in an out-of-plane direction with respect to the base portion and two wall portions formed in parallel to the drive direction of the driven body extending in an out-of-plane direction with respect to the base portion and a contact portion including a contact surface with the driven body formed by connecting the wall portions.11-01-2012

Patent applications in class Direct mechanical coupling

Patent applications in all subclasses Direct mechanical coupling