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    Variable resistance element with multiple patterns for measuring instruments
    1.
    发明授权
    Variable resistance element with multiple patterns for measuring instruments 失效
    具有用于测量仪器的多种图案的可变电阻元件

    公开(公告)号：US3564475A

    公开(公告)日：1971-02-16

    申请号：US3564475D

    申请日：1968-10-15

    申请人： NIPPON KOGAKU KK

    发明人： FUJII TATSUO ,  WATANO YUTAKA

    IPC分类号： H01C10/04 ,  H01C10/22 ,  H01C10/24 ,  H01C10/30 ,  H01C5/02 ,  H01C9/02

    CPC分类号： H01C10/04 ,  H01C10/22 ,  H01C10/24 ,  H01C10/308

    摘要： A VARIABLE RESISTANCE ELEMENT IS PROVIDED IN WHICH A FILM OF MATERIAL OF UNKNOWN RESISTIVITY IS DEPOSITED ON A SUITABLE PLATE IN VARYING WIDTHS, A PORTION OF THE FILM BEING IN A GENERAL SERPENTINE PATTERN. A SLIDABLE CONTACT OF SUITABLE WIDTH AND HEIGHT ENGAGES THE RESISTANCE FILM AND IS MOVABLE RELATIVE THERETO IN A GIVEN PATH FOR VARYING THE RESITANCE VALUE IN A SMALL STEP-WISE MANNER. A RESISTANCE ELEMENT OF EXTENDED RANGE MAY BE PROVIDED BY THE ADDITION OF RESISTANCE FILM AREAS BETWEEN INCOMPLETE LOOPS OF THE SERPENTINE PATTERN OR ADDED TO COMPLETE THE LOOPS, THE MATERIAL OF THE SECOND FILM HAVING A HIGHER RESISTIVITY THAN THE FIRST FILM. THE SIDE PREFERABLY, ENGAGES ONLY THOSE PORTIONS OF THE FIRST RESISTANCE FILM IN THE PREDETERMINED PATH.

    Precision potentiometer
    2.
    发明授权
    Precision potentiometer 失效
    精密电位计

    公开(公告)号：US3562693A

    公开(公告)日：1971-02-09

    申请号：US3562693D

    申请日：1969-01-24

    申请人： BUNKER RAMO

    发明人： HENNING DALE ALLEN

    IPC分类号： H01C10/24 ,  H01C5/02

    CPC分类号： H01C10/24

    摘要： A PRECISION POTENTIOMETER INCLUDING A HOUSING WITH A COIL RESISTANCE ELEMENT THEREIN,, A UNITARY PLASTIC ROTOR MEMBER HAVING A SHAFT ELEMENT AND A HOLLOW ROTOR ELEMENT, A CARRIER AXIALLY SLIDABLE ON THE ROTOR ELEMENT, AN OUTPUT CONTACT BAR WITHIN THE HOLLOW ROTOR ELEMENT, A SLIDER CONTACT ON THE CARRIER SLIDINGLY ENGAGING THE RESISTANCE ELEMENT AND EXTENDING THROUGH A SLOT IN THE ROTOR ELEMENT AND SLIDINGLY ENGAGING THE OUTPUT CONTACT BAR.