公开(公告)号：US4900966A

公开(公告)日：1990-02-13

申请号：US242795

申请日：1988-09-09

Applicant: Udo Winter ,  Andreas Schebler

Inventor： Udo Winter ,  Andreas Schebler

IPC: E05F15/697 ,  H02K27/00 ,  H02P7/03

CPC classification number: H02K5/225 ,  E05F15/697 ,  H02P7/03 ,  E05Y2900/55

Abstract: A dc commutator motor can be switched off when the motor rotor is short-circuited by the rotor's coming to a halt, by an operating switch (10). The switch is provided in the line connecting the brushes to a radio suppression network in a compact and simple design. The switch is operated by an ac voltage induced when the motor is running, with a frequency corresponding to the motor speed. A sensing winding connected to the operating switch for inducing the operating ac voltage is wound preferably around a radio interference suppression choke of the radio suppression network.

Abstract translation: 当电动机转子通过操作开关（10）转动停止时，直流换向器电动机可被切断。 该开关设置在将电刷以紧凑简单的设计连接到无线电抑制网络的线路中。 开关由电机运行时产生的交流电压运行，频率对应于电机转速。 连接到用于感应操作交流电压的操作开关的感测绕组优选地缠绕在无线电抑制网络的无线电干扰抑制扼流圈周围。

公开(公告)号：US4371778A

公开(公告)日：1983-02-01

申请号：US72285

申请日：1979-09-04

Applicant: Hans Meixner ,  Andreas Schebler

Inventor： Hans Meixner ,  Andreas Schebler

IPC: F23D11/44 ,  F23K5/20 ,  H05B3/14 ,  F02M31/12 ,  H05B1/02

CPC classification number: F23K5/20 ,  H05B3/141

Abstract: A heating device for preheating heating oil flowing through a pipe has a heat conduction body to which a plate-shaped ceramic PTC resistance heating element is connected in heat exchange-relationship. The heating element has a thickness in the range of 0.5 to 2 millimeters, a Curie temperature between 120.degree. and 220.degree. C. and a specific resistance of 430 to 5000 ohm-cm rated at a supply voltage between 110 and 220 volts such that the maximum temperature achieved by the heating element over a range of heat transfer rates is relatively constant and is determined by the resistivity and the Curie temperature of the heating element rather than by the rate of heat transfer. If designed for energization at 220 volts, the heating element has the same thickness and Curie temperature as in the first example described above, but with a specific resistance of 1700 to 20,000 ohm-cm as measured at 220 volts.

Abstract translation: 用于预热流过管道的加热油的加热装置具有热传导体，板状陶瓷PTC电阻加热元件以热交换关系连接到该导热体。 加热元件的厚度在0.5至2毫米的范围内，居里温度在120度至220度之间，电阻值为430至5000欧姆厘米，额定电压为110至220伏， 通过加热元件在一定范围的传热速率下实现的最高温度是相对恒定的，并且由加热元件的电阻率和居里温度决定，而不是热传递速率。 如果设计为在220伏特下通电，则加热元件具有与上述第一示例中相同的厚度和居里温度，但是在220伏特下测量的电阻为1700至20,000欧姆厘米。