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    Liquid level sensor
    4.
    发明授权
    Liquid level sensor 失效
    液位传感器

    公开(公告)号：US3890478A

    公开(公告)日：1975-06-17

    申请号：US41344873

    申请日：1973-11-07

    Applicant: GEN MOTORS CORP

    Inventor： RIDDEL JOHN W

    IPC: H01H35/18

    CPC classification number: H01H35/18

    Abstract: A liquid level sensor for a tank having a base member supporting a terminal member insulated therefrom and an arm with float attached at one end which is movable in response to changes in the liquid level of the tank to cause the arm''s other end to operably engage the terminal member to complete an electrical warning circuit. A coil type spring normally supports the arm in a neutral position which corresponds to a full tank. When the liquid level decreases, the coil spring is deflected to allow the arm to establish a connection between the terminal and the base of the sensor which is grounded.

    Abstract translation: 一种用于罐的液面传感器，其具有支撑绝缘的端子构件的基部构件和在一端附接有浮子的臂，其可响应于罐的液面的变化而移动，以使臂的另一端可操作地接合 终端成员完成电气警告电路。 线圈型弹簧通常将臂支撑在对应于满坦克的中立位置。 当液位降低时，螺旋弹簧被偏转以允许臂在接地的传感器的端子和底座之间建立连接。

    Float operated thermistor tank level sender
    5.
    发明授权
    Float operated thermistor tank level sender 失效
    FLOAT操作温度传感器液位传感器

    公开(公告)号：US3563091A

    公开(公告)日：1971-02-16

    申请号：US3563091D

    申请日：1969-08-04

    Applicant: GEN MOTORS CORP

    Inventor： RIDDEL JOHN W

    IPC: G01F23/24 ,  G01F23/36 ,  G01F23/10

    CPC classification number: G01F23/246 ,  G01F23/36

    Abstract: A LIQUID LEVEL INDICATOR HAVING A FLOAT POSITIONED IN A LIQUID RESERVOIR, A PAIR OF THERMISTORS SECURED TO THE FLOAT BY A PAIR OF HEAT TRANSFER MEMBERS POSITIONED ON THE FLOAT SO AS TO BE MOVABLE THEREWITH AND VARIABLY IMMERSED IN THE LIQUID FOR SUPPORTING THE THERMISTORS AND FOR CONVEYING HEAT FROM THE THERMISTORS TO THE LIQUID SO AS TO VARY THE TEMPERATURES AND THE RESISTANCES OF THE THERMISTORS, AND AN INDICATING DEVICE RESPONSIVE TO THE RESPECTIVE THERMISTORS RESISTANCES SO AS TO PROVIDE AN INDICATION OF THE QUANTITY OF LIQUID IN THE RESERVOIR.

    Method of forming a printed thermistor on a metal sheet
    7.
    发明授权
    Method of forming a printed thermistor on a metal sheet 失效
    在金属片上形成印刷热敏电阻的方法

    公开(公告)号：US3574930A

    公开(公告)日：1971-04-13

    申请号：US3574930D

    申请日：1968-10-04

    Applicant: GEN MOTORS CORP

    Inventor： RIDDEL JOHN W ,  SCHWYN RAYMOND E

    IPC: H01C7/04

    CPC classification number: H01C7/041 ,  Y10T29/49085 ,  Y10T29/49099 ,  Y10T29/49101

    Abstract: This disclosure relates to thermistor assemblies, and more particularly to a nickel substrate having a thermistor film thereon and a method of making the same. The thermistor assembly is formed by coating a nickel substrate with a film of thermistor material and subsequently heating the coated nickel substrate until a thin, adherent insulative layer of nickel oxide is formed. The nickel oxide layer insulates the nickel substrate electrically from the thermistor material and it bonds the thermistor material to the nickel substrate. After the coated nickel substrate has cooled, two electrical contacts in spaced relationship to each other are printed on top of the thermistor film. This thermistor assembly as a fast temperature response, high heat dissipation characteristics which permit the thermistor to be operated at power levels above and below one watt, and provides a sturdy construction which is not readily broken.

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