Ultrasonic apparatus
    1.
    发明授权
    Ultrasonic apparatus 失效
    超声波设备

    公开(公告)号:US4257272A

    公开(公告)日:1981-03-24

    申请号:US64842

    申请日:1979-08-08

    CPC classification number: G10K11/352 A61B8/00

    Abstract: There have been proposed ultrasonic scanners in which a transducer is laterally scanned relative to a body known arrangements with lead screws for example can give rise to much vibration and have a high power requirement. It is proposed to scan with a linear motor drive. The scanning part including the transducer is put in an oil bath and the oil flow is balanced to act as a counterweight. The scanning part should, therefore, have neutral buoyancy, with the centers of gravity and buoyancy substantially coincident.

    Abstract translation: 已经提出了超声波扫描器,其中换能器相对于身体横向扫描,已知的带有螺丝的布置例如可以产生大量振动并且具有高功率需求。 建议用线性电机驱动进行扫描。 将包括换能器的扫描部件放入油浴中,并将油流平衡以作为配重。 因此,扫描部分应具有中性浮力,重心和浮力基本上重合。

    Charged particle deflection
    2.
    发明授权
    Charged particle deflection 失效
    带电粒子偏转

    公开(公告)号:US4614872A

    公开(公告)日:1986-09-30

    申请号:US605831

    申请日:1984-05-01

    CPC classification number: H01J37/045 H01J3/30 H01J37/1472

    Abstract: An electron beam or similar charged particles may be deflected by passing through an electrostatic field produced in a deflecting structure. The degree of deflection is controlled by rotating the deflecting structure and path relative to one another. The beam may be rotated relative to the structure by a magnetic beam deflector which compensates for a range of electron energies within the beam so that all electrons are deflected in the electrostatic field by an equal amount.

    Abstract translation: 电子束或类似的带电粒子可能通过穿过偏转结构中产生的静电场而偏转。 通过相对于彼此旋转偏转结构和路径来控制偏转度。 光束可以通过磁束偏转器相对于结构旋转,该磁束偏转器补偿光束内的电子能量范围,使得所有电子在静电场中偏转相等的量。

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