公开(公告)号：US4024525A

公开(公告)日：1977-05-17

申请号：US647295

申请日：1976-01-07

申请人： Kenneth A. Baumgartner ,  Ward L. Bivens

发明人： Kenneth A. Baumgartner ,  Ward L. Bivens

IPC分类号： G01R31/34 ,  H01R39/58 ,  G08B21/00

CPC分类号： G01R31/34 ,  H01R39/58

摘要： A brush which presses against the commutator of a direct current machine has a groove in one side thereof into which a fixed probe partially extends. As the brush wears, movement thereof causes physical engagement of the probe with the end of the groove to complete a current path through the probe. Flow through the current path energizes and latches a warning device.

摘要翻译： 按压直流电机的换向器的电刷在其一侧具有一个沟槽，固定的探针部分延伸到该槽中。 当电刷磨损时，其运动导致探头与槽的端部的物理接合以完成穿过探针的电流路径。 通过电流通路的电流通电并锁定警告装置。

公开(公告)号：US4097791A

公开(公告)日：1978-06-27

申请号：US636785

申请日：1975-12-01

申请人： Ward L. Bivens ,  Richard A. Schwehr

发明人： Ward L. Bivens ,  Richard A. Schwehr

IPC分类号： B66F9/24 ,  H02P1/02 ,  H02P1/04

CPC分类号： H02P1/026 ,  B66F9/24 ,  Y10T307/951 ,  Y10T307/957

摘要： A delayed turn-on and turn-off control circuit for an electric motor includes a motor relay having an electrical actuator and a normally open motor contactor which is connected in series between the motor and an electrical power source for running the motor when the electrical actuator is energized. A normally non-conductive electrical switching device is serially connected between the electrical actuator and the power source. A turn-on delay circuit is responsive to closing of a normally open motor start switch and produces an electrical signal to render the electrical switching device conductive only after a predetermined lapse of time following the closing of the motor start switch, thereby energizing the motor. A turn-off delay circuit is responsive to opening of the motor start switch and produces an electrical signal to render the electrical switching device nonconductive only after a predetermined lapse of time following the opening of the motor start switch, thereby causing the motor to be deenergized.

摘要翻译： 一种用于电动马达的延迟开启和关闭控制电路包括具有电致动器和常开马达接触器的马达继电器，该马达继电器串联连接在马达与用于运行马达的电源之间，用于在电致动器 被激活。 正常非导电的电气开关装置串联连接在电动执行器和电源之间。 导通延迟电路响应于常开电动机起动开关的闭合，并产生电信号，使得电开关装置仅在电动机起动开关闭合之后经过预定的时间后导通，从而使电动机通电。 关断延迟电路响应电动机启动开关的打开而产生电信号，使得电开关装置在电动机起动开关断开之后经过预定的时间后不导通，从而使电动机断电 。

公开(公告)号：US4080556A

公开(公告)日：1978-03-21

申请号：US656569

申请日：1976-02-09

申请人： Frank S. Buchwald ,  Ward L. Bivens

发明人： Frank S. Buchwald ,  Ward L. Bivens

IPC分类号： H02K11/04 ,  H02K23/10 ,  H02P1/18 ,  H02P7/00

CPC分类号： H02K23/10 ,  H02K11/044 ,  H02P1/18

摘要： A DC electrical motor of the form having one field winding connected in series with the armature winding in addition to a shunt field winding connected in parallel with the armature winding is provided with a diode or the like in the shunt field winding circuit. This blocks reversed current flow in the shunt field winding which can otherwise occur during start-up due to an inductive interaction with the series field winding and armature circuit. The diode or the like enables faster magnetization of the stator poles by preventing creation of negative shunt field ampere turns due to the magnetic couple with the series field-armature circuit during the motor start period. Faster starting of the motor results, and adverse effects such as heating, brush deterioration, and commutation problems are reduced.

摘要翻译： 除了与电枢绕组并联连接的并联励磁绕组之外，具有与电枢绕组串联的一个励磁绕组的形式的DC电动机在分励励磁绕组电路中设置有二极管等。 这阻止了分流场绕组中的反向电流，否则由于与串联励磁绕组和电枢电路的感应相互作用，否则在起动期间可能发生。 二极管等可以通过在电动机启动期间由于与串联励磁电枢电路的磁耦合而产生负分流场安培匝而使定子极的磁化更快。 电动机起动较快，减少加热，刷子劣化，换向问题等不利影响。

公开(公告)号：US5709080A

公开(公告)日：1998-01-20

申请号：US616431

申请日：1996-03-15

申请人： Amit Arora ,  Ward L. Bivens ,  Darren L. Krahn ,  Randy N. Peterson

发明人： Amit Arora ,  Ward L. Bivens ,  Darren L. Krahn ,  Randy N. Peterson

IPC分类号： F01N3/025 ,  F01N3/20 ,  F01N11/00 ,  F01N3/18 ,  F01N3/36

CPC分类号： F01N11/00 ,  F01N3/2066 ,  F01N2550/05 ,  F01N2550/06 ,  F01N2570/14 ,  F01N2610/03 ,  Y02T10/24 ,  Y02T10/47

摘要： A method and apparatus for determining a leak in an HC fluid supply of an exhaust purification system for an engine is disclosed. The fluid supply includes an injector that injects an amount of a NOx reducing fluid, a tank that holds the NOx reducing fluid, and a pump that pressurizes the NOx reducing fluid. The system fluid pressure is read before and after the pump is shut off. The pressure readings are compared and the exhaust purification system is turned off in response to the difference between the pressure readings being greater than a predetermined value.

摘要翻译： 公开了一种用于确定用于发动机的排气净化系统的HC流体供应中的泄漏的方法和装置。 流体供应装置包括喷射一定量NOx还原流体的喷射器，保持NOx还原流体的罐，以及对NOx还原流体加压的泵。 在泵关闭之前和之后读取系统流体压力。 比较压力读数并且响应于压力读数之间的差大于预定值而关闭排气净化系统。