Regenerative electric driver circuit
    22.
    发明授权
    Regenerative electric driver circuit 失效
    再生电驱动电路

    公开(公告)号:US5962951A

    公开(公告)日:1999-10-05

    申请号:US9026

    申请日:1998-01-20

    Inventor: Richard P Bishop

    Abstract: A vibrating mechanism comprised of piezoelectric elements which vibrate at a high frequency when a voltage is applied to them. The piezoelectric elements are mounted on a rib so that their free ends extend from the rib. When the piezoelectric elements are energized the free ends vibrate with a "wing-flapping" motion. Weights may be attached to the free ends of the piezoelectric element to increase the inertial component of vibration. In the preferred embodiment of the invention, the piezoelectric elements are prestressed. The invention will be an inexpensive substitute for other vibratory devices.

    Abstract translation: 一种振动机构,包括当施加电压时以高频振动的压电元件。 压电元件安装在肋上,使得它们的自由端从肋延伸。 当压电元件通电时,自由端以“翼状振动”运动振动。 重量可以附接到压电元件的自由端以增加振动的惯性分量。 在本发明的优选实施例中,压电元件是预应力的。 本发明将是其它振动装置的廉价替代品。

    Cleaning apparatus for a mirror
    24.
    发明授权
    Cleaning apparatus for a mirror 失效
    镜子清洁装置

    公开(公告)号:US5037189A

    公开(公告)日:1991-08-06

    申请号:US315741

    申请日:1989-02-27

    Abstract: Ultrasonic vibrators, attached to the back of a mirror, are vibrated according to an A.C. signal pattern which is selected from various A.C. signal patterns for the removal of water, frost and/or ice from the surface of the mirror. Further included is a temperature detecting device attached to the back of the mirror for inhibiting operation of the ultrasonic vibrators when the temperature of the mirror exceeds a predetermined temperature, to thus avoid thermally-induced damage to the mirror.

    Abstract translation: 附着在镜子背面的超音波振动器根据从各种交直流信号图案中选择的交流信号图案振动,用于从反射镜的表面去除水,霜和/或冰。 还包括一个温度检测装置,当反射镜的温度超过预定温度时,附着到反射镜的背面以防止超声波振动器的操作,从而避免对镜子的热致损坏。

    ULTRASONIC DEVICE HAVING LARGE RADIATING AREA

    公开(公告)号:US20180287585A1

    公开(公告)日:2018-10-04

    申请号:US15475993

    申请日:2017-03-31

    CPC classification number: B06B1/0611 B06B2201/70 G10K11/04 G10K11/22 G10K11/24

    Abstract: The present invention relates a power ultrasound device for fluids processing. An ultrasonic resonator comprises: an exciter section having a longitudinal axis and dimensioned to be resonant in a direction along the longitudinal axis when the exciter section is energized with high frequency vibrations; and a radiator section having a connection stub and coupled to the exciter section through the connection stub, wherein the radiator section is configured to receive the vibrations from the exciter section and transmit the vibrations as acoustic waves, wherein an axial length of the exciter section is less than a half-wavelength, wherein the connection stub completes the half-wavelength when coupled to the excited section to allow the ultrasonic resonator operate in resonance at design frequency. The radiator section includes a radiator body having at least three sides to provide a plurality of external radiating surfaces, and two opposite faces having a plurality of orifices formed therein, wherein walls of the orifices are configured to provide a plurality of internal radiating surfaces, and wherein the internal and the external surfaces are configured to transmit the vibrations as acoustic waves.

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