中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

76 records (took 0.025 seconds)

    TECHNIQUE FOR MEASURING VERY SMALL SPACINGS
    3.
    发明申请
    TECHNIQUE FOR MEASURING VERY SMALL SPACINGS 审中-公开
    测量非常小的空间的技术

    公开(公告)号：WO1985005673A1

    公开(公告)日：1985-12-19

    申请号：PCT/US1985001035

    申请日：1985-06-03

    Applicant: KOLLMORGEN TECHNOLOGIES CORPORATION

    Inventor： KOLLMORGEN TECHNOLOGIES CORPORATION ,  FRIDGE, David, A. ,  MILLER, Kenneth, A.

    IPC: G01B09/02

    CPC classification number: G11B5/6005 ,  G01B11/14 ,  G11B33/10

    Abstract: The spacing between two surfaces such as the space between a glass disk (14) and a magnetic head or slider (12) is measured by directing light from a broad spectrum light source (18) onto the two surfaces, and combining the reflected light, with the light at different frequencies being combined constructively and destructively. The combined signals are analysed at a large number of wavelengths to give a plot of intensity vs. wavelength, and the wavelength or wavelengths of maximum intensity (and constructive interference) and/or minimum intensity (destructive interference) are identified.

    Transient free solid state automatic power factor correction
    4.
    发明公开
    Transient free solid state automatic power factor correction 失效
    瞬态自由固态功率因数校正

    公开(公告)号：EP0194574A3

    公开(公告)日：1988-06-01

    申请号：EP86102910

    申请日：1986-03-05

    Applicant: KOLLMORGEN TECHNOLOGIES CORPORATION

    Inventor： Whited, James S.

    IPC: H02J03/18

    CPC classification number: H02J3/1864 ,  Y02E40/12 ,  Y02P80/112 ,  Y10S323/91

    Abstract: In an apparatus for controlling the power factor of a power distribution system connected to inductive loads, banks of delta connected capacitors are added to or removed from the power lines of the power distribution system by a plurality of solid state switching devices which are under the control of a microprocessor. The solid state switching devices include optically isolated SCR devices that do not generate electrical interference and provide transient free operation. The microprocessor is also capable of calculating the power factor and displaying it on a digital readout.

    Brushless tachometer
    6.
    发明公开
    Brushless tachometer 无效
    无刷测速仪

    公开(公告)号：EP0128519A3

    公开(公告)日：1987-07-01

    申请号：EP84106449

    申请日：1984-06-06

    Applicant: KOLLMORGEN TECHNOLOGIES CORPORATION

    Inventor： Coulon, Philip Serge

    IPC: G01P03/46

    CPC classification number: G01P3/465

    Abstract: A brushless tachometer in which output signal switching is achieved using field effect transistors and which is capable of achieving linearity over a broad range, particularly the zero speed region, is claimed. According to a preferred embodiment, the brushless tachometer is operated in a current mode as part of the servo loop to substantially reduce tachometer voltage switching requirements. A ROM can be used to control commutation switching. Commutation is preferable line-to-neutral to reduce ripple.

    Process for the manufacture of substrates to interconnect electronic components and articles made by said process
    7.
    发明公开
    Process for the manufacture of substrates to interconnect electronic components and articles made by said process 失效
    用于制造基板以互连电子元件和由制造工艺制成的制品的方法

    公开(公告)号：EP0214628A3

    公开(公告)日：1987-05-13

    申请号：EP86112310

    申请日：1986-09-05

    Applicant: KOLLMORGEN TECHNOLOGIES CORPORATION

    Inventor： Lassen, Charles L.

    IPC: H05K07/06

    CPC classification number: H05K7/06 ,  H05K1/112 ,  H05K3/103 ,  H05K3/4602 ,  H05K3/4641 ,  H05K3/4644 ,  H05K2201/09309 ,  H05K2201/09472 ,  H05K2201/09509 ,  H05K2201/10287

    Abstract: An improved process for making substrates for mounting and interconnecting high density components comprising a substrate core and at least two printed circuit con­ductor networks and wire scribed conductor filaments wherein connection between selected conductors of the printed circuit networks are formed by providing cavi­ties reaching from a conductor in one network to a con­ductor in another network and depositing conductive ma­terial covering the cavity wall and reaching from one to the other conductor; encapsulating the surface with a resin composition and providing its surface with wire scribed conductors; encapsulating the thus formed sur­face and,at predetermined locations, providing cavities reaching from the encapsulant surface to the respective wire scribed conductor; and applying a conductive metal layer to said cavity and the core of said wire scribed conductor thus forming an electrical connection from said conductor core to said surface of said encapsulant layer.

    Electrical drive systems incorporating variable reluctance motors
    9.
    发明公开
    Electrical drive systems incorporating variable reluctance motors 失效
    包含不同变压器的电动机系统

    公开(公告)号：EP0193708A3

    公开(公告)日：1987-04-08

    申请号：EP86100354

    申请日：1986-01-13

    Applicant: KOLLMORGEN TECHNOLOGIES CORPORATION

    Inventor： Byrne, John V. ,  O'Dwyer, Jeremiah B.

    IPC: H02K01/06 ,  H02K19/06

    CPC classification number: H02K1/246 ,  H02K19/103 ,  H02P1/163

    Abstract: in a two-phase salient pole variable reluctance motor in which the number of stator poles (24-27) is four or a multiple of four, alternate stator poles carry windings (31-34) of different phases and each stator pole (24-27) has an elongated pole shoe (53), so that the pole tips (28, 29) of each adjacent pair of stator poles are at a relatively short circumferential spacing. Each rotor pole (35, 36) has an iron depletion layer (37) in the vicinity of its poleface surface (38) which defines a saturating zone, across which the greater part of the magnetomotive force produced by energisation of the stator windings is developed due to the uniform build-up of flux with rotor angle throughout almost the entire duration of pole overlap. A working stroke approximating to stator pole pitch is achieved. The circumferential extent of each rotor pole (35, 36) is matched to that of the stator poles (24-27) so that when the rotor poles are fully aligned with a pair of stator poles, each rotor poletip (41, 42) is located in the vicinity of a pair of spaced apart stator pole tips (28, 29), the relative disposition of the pole tips being such that when both phases of the motor are then simultaneously excited, fringing flux passes through the rotor poletips (41, 42), this flux being relatively strong for one poletip of each rotor pole and relatively weak for the other poletip. When the rotor poles are initially positioned so that there is partial overlap between rotor and stator poles, the motor is started by a conventional reluctance motor phase energisation sequence, but when the rotor poles are initially fully aligned with a pair of stator poles, in which position neither phase acting alone is capable of producing torque, both phases are excited simultaneously, so that torque is applied to the rotor by the flux asymmetry prevailing in these circumstances to move the rotor into a disposition from which a normal phase energisation may be followed. The motor is bi-directional and self-starting in both senses from any rotor posi- tinn

Patent Agency Ranking