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    Temperature-compensating apparatus for variable electrical parameter device
    1.
    发明授权
    Temperature-compensating apparatus for variable electrical parameter device 失效
    用于变电极参数装置的温度补偿装置

    公开(公告)号：US3576480A

    公开(公告)日：1971-04-27

    申请号：US3576480D

    申请日：1970-02-09

    Applicant: ITT ,  ITT

    Inventor： BARTON PAUL M

    IPC: H01G4/02 ,  H01G5/14 ,  H01G5/34

    CPC classification number: H01G4/02

    Abstract: A temperature compensating arrangement in a variable electrical parameter device such as a variable vacuum capacitor which is controlled by a lead screw engaged to an axially translating shaft member. The engagement of the lead screw into the shaft member is through a sleeve insert member. The sleeve insert is threaded to connect to threads inside the control end of the shaft and the lead screw engages interior threads over a relatively small axial length substantially at the innermost end of the insert. Vacuum capacitors are typical of such variable electrical parameter devices. As illustrated, thermal expansion of the shaft is counteracted by expansion of the insert member. The insert member is normally constructed of material having a higher coefficient of thermal expansion than the shaft and the other structural members tending to increase the capacitor plate mesh with their expansion.

    HYBRID ROTATIONAL SPEED DETECTOR
    5.
    发明申请
    HYBRID ROTATIONAL SPEED DETECTOR 有权

    公开(公告)号：US20250093377A1

    公开(公告)日：2025-03-20

    申请号：US18724428

    申请日：2021-12-28

    Applicant: ITT Manufacturing Enterprises LLC

    Inventor： Bradley DeCook ,  James Reitano

    IPC: G01P3/48

    Abstract: A device to detect a rotational run speed of a piece of rotating machinery. The device includes a processor in communication with a magnetic flux sensor, a vibration sensor, and a memory which includes instructions. The processor is configured to receive magnetic flux data and apply a fast Fourier transform to the magnetic flux data to generate transformed magnetic flux data. The processor is configured to determine a prominent fundamental frequency in the transformed magnetic flux data. For an electrical machine, this prominent fundamental frequency corresponds to the synchronous speed or the speed of the stator magnetic field. The processor is configured to receive vibration data and apply a fast Fourier transform to the vibration data to generate transformed vibration data. The processor is configured to determine an isolated frequency focal band based on the prominent fundamental frequency in the transformed magnetic flux data and to determine the rotational run speed of the piece of rotating machinery based on the isolated frequency focal band and the transformed vibration data. By defining a relatively limited frequency band in which only the vibrational peak corresponding to the true rotational speed of the rotor will be located, it can be avoided to erroneously determine the speed based on a harmonic having a large amplitude.

    FRICTION MATERIAL COMPOSITION AND ASSOCIATED BRAKE PAD
    6.
    发明申请
    FRICTION MATERIAL COMPOSITION AND ASSOCIATED BRAKE PAD 有权

    公开(公告)号：US20250075764A1

    公开(公告)日：2025-03-06

    申请号：US18554227

    申请日：2022-04-07

    Applicant: ITT Italia S.R.L.

    Inventor： Margherita GILETTA ,  Annamaria CANUTI ,  Daniele MORERO

    IPC: F16D69/02 ,  F16D65/092

    Abstract: Friction material composition and associated brake pad for vehicles having a reduced or nil tendency to both stiction and creep groan, wherein the composition includes an organic binder; an inorganic filler; a lubricant; hard abrasives having a Mohs hardness of above 7 having exclusively a roundish shape, e.g. consisting in: Alumina, Corindone, Silicon carbide, Tungsten carbide, Zirconium carbide, Zirconium silicate, Boron nitride; soft abrasives having a Mohs hardness of below 7; carbon based materials; and a metal or mixture of metals except Cu, in an amount of less than 7% in volume calculated on the total volume of the composition; the ratio between the hard abrasive rounded and the carbon based materials being 1:3; the ratio between the hard abrasive rounded and the soft abrasives being 1:6; the ratio between the metal or mixture of metals and the carbon based materials being 1:6.

    Single-Entry Screw Pump
    7.
    发明申请
    Single-Entry Screw Pump 有权

    公开(公告)号：US20240369058A1

    公开(公告)日：2024-11-07

    申请号：US18651519

    申请日：2024-04-30

    Applicant: ITT Bornemann GmbH

    Inventor： David Johannes Blatt

    IPC: F04C2/16 ,  F04C15/00

    Abstract: A single-entry screw pump with a housing which has an inlet and an outlet for a medium to be pumped, with two spindles which are rotatably mounted in the housing in slide bearings, the spindles each have a screw thread on their outer circumference between the slide bearings, the screw threads of the spindles engage with one another and convey the medium from the inlet to the outlet, the housing has a sleeve section in which the screw threads of the spindles are positioned, the sleeve section has a suction-side inlet opening and a pressure-side outlet opening, wherein the media flow from the inlet to the inlet opening is guided along the pressure-side slide bearing in a hydraulically equalising manner and from the outlet opening to the outlet along the suction-side slide bearing.

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