公开(公告)号：US3961336A

公开(公告)日：1976-06-01

申请号：US579460

申请日：1975-05-21

申请人： John A. Walker ,  Dimitri S. Dimitri ,  Reginald Louis Perkins

发明人： John A. Walker ,  Dimitri S. Dimitri ,  Reginald Louis Perkins

IPC分类号： G01D15/08

CPC分类号： G01D15/08 ,  Y10T29/49002

摘要： An improved printer embodiment that includes a print head having thin "foil" electrodes and associated spacers fashioned to maintain very precisely controlled dimensions and positioning according to specific, improved fabrication techniques providing an exactly oriented row of spaced, aligned electrodes. Each electrode includes an integral "print-finger" adapted to resiliently skid over the passing print-substrate and, preferably, also including a companion contact adapted to engage an associated conductor terminal.

摘要翻译： 一种改进的打印机实施例，其包括具有薄的“箔”电极和相关联的间隔物的打印头，所述打印头形成为根据提供精确取向的间隔开的排列的电极的行的特定的改进的制造技术来维持非常精确的受控尺寸和定位。 每个电极包括适于在通过的印刷基板上弹性地滑动的整体的“印刷指”，并且优选地还包括适于接合相关联的导体端子的伴随接触。

公开(公告)号：US4093847A

公开(公告)日：1978-06-06

申请号：US668470

申请日：1976-03-19

申请人： John A. Walker ,  Dimitri S. Dimitri

发明人： John A. Walker ,  Dimitri S. Dimitri

IPC分类号： F24H1/10 ,  G05D23/24 ,  H05B1/02 ,  H05B3/60

CPC分类号： F24H1/106 ,  F24H9/1818 ,  F24H9/2028 ,  G05D23/1906 ,  G05D23/24

摘要： An electric fluid heater of the type in which the fluid is heated by passing electricity through it includes an electronic temperature control system responsive to a temperature sensor in the fluid for controlling the flow of electric current to the heating electrodes. The electronic controller includes means to limit the maximum current passed by the heating electrodes. Heat generated is controlled to demand by varying the duty cycle of back-to-back SCR's in series with one of the electrodes.

摘要翻译： 通过使电流通过流体被加热的类型的电流体加热器包括响应于流体中的温度传感器来控制到加热电极的电流的电子温度控制系统。 电子控制器包括限制由加热电极通过的最大电流的装置。 产生的热量通过改变与其中一个电极串联的背靠背SCR的占空比来控制需求。

公开(公告)号：US3983359A

公开(公告)日：1976-09-28

申请号：US504814

申请日：1974-09-10

申请人： John A. Walker ,  Dimitri S. Dimitri

发明人： John A. Walker ,  Dimitri S. Dimitri

IPC分类号： F24H1/10 ,  G05D23/24 ,  H05B3/60

CPC分类号： F24H1/106 ,  G05D23/1906 ,  G05D23/24

摘要： An electric fluid heater includes a metallic container defining a heating chamber provided with a pair electrodes for passing electric current through the fluid for heating the fluid. The container has a fluid input port, a fluid output port and a safety port all communicating with the heating chamber. The ports have a reduced aperture portion of a substantial length to increase the resistance of the current leakage path from the electrodes to external ground connections. All surfaces of the metallic container including the fluid contacting surfaces of the heating chamber and ports are covered by an electrically insulative coating. An external pressure relief valve is connected to the safety port.

摘要翻译： 电动流体加热器包括限定加热室的金属容器，该加热室设置有用于使电流通过用于加热流体的流体的电极。 容器具有流体输入端口，流体输出端口和与加热室连通的安全端口。 端口具有相当长度的减小的开口部分，以增加从电极到外部接地连接的电流泄漏路径的电阻。 包括加热室和端口的流体接触表面的金属容器的所有表面被电绝缘涂层覆盖。 外部泄压阀连接到安全口。