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1. 发明授权

US4272695A Brush wear indicator 失效
标题翻译：刷磨损指示器
公开(公告)号：US4272695A
公开(公告)日：1981-06-09
申请号：US15094
申请日：1979-02-26
申请人： Frank S. Buchwald , Richard C. Maher , Jerome E. Buchina
发明人： Frank S. Buchwald , Richard C. Maher , Jerome E. Buchina
IPC分类号： H01R39/58 , H02K13/00
CPC分类号： H01R39/58
摘要： A brush wear indicator includes a first contactor and a second contractor movable relative to the first contactor from an open position to a closed position to connect an electrical circuit to an indicator. The second contactor is maintained in the open position against the resiliency of a leaf spring by a coil spring which urges a brush toward a commutator in response to wear to the brush. When the brush wears away to a preselected length the coil spring will have moved to a position at which the leaf spring is free to bias the second contactor to the closed position.
摘要翻译：电刷磨损指示器包括第一接触器和第二承包商，其可相对于第一接触器从打开位置移动到关闭位置，以将电路连接到指示器。通过螺旋弹簧将第二接触器保持在打开位置以抵抗弹簧的弹性，螺旋弹簧响应于刷子的磨损而向刷子施力。当电刷磨损预定长度时，螺旋弹簧将移动到板簧自由以将第二接触器偏置到关闭位置的位置。

2. 发明授权

US4751439A Multiple chopper speed control system for compound motor 失效
标题翻译：复合电机多重斩波速度控制系统
公开(公告)号：US4751439A
公开(公告)日：1988-06-14
申请号：US495284
申请日：1983-05-16
申请人： Frank S. Buchwald , William Pickering
发明人： Frank S. Buchwald , William Pickering
IPC分类号： H02P7/298 , H02P5/04
CPC分类号： H02P7/298 , Y10S388/917 , Y10S388/92
摘要： A compound-motor speed control system for a battery-powered vehicle (86) wherein the series winding (14) and the shunt winding (16) of the motor (12) are magnetically linked in energy transfer relation. A first current switch (18) is connected in series with the series winding (14) and the armature (15) and a second current switch (20) is connected in series with the shunt winding (16). A digitally-implemented speed control system (24) responds to the speed selection settings of an analog device (64) to operate the first switch intermittently while holding the second switch closed over a lower speed range, and to operate the second switch intermittently while holding the first switch closed over a higher speed range.
摘要翻译：一种用于电池供电车辆（86）的复合电动机速度控制系统，其中电动机（12）的串联绕组（14）和分流绕组（16）以能量传递关系磁性连接。第一电流开关（18）与串联绕组（14）和电枢（15）串联连接，第二电流开关（20）与分流绕组（16）串联连接。数字实现的速度控制系统（24）响应于模拟设备（64）的速度选择设置，以间歇地操作第一开关，同时在第二开关在较低速度范围内保持闭合，并且间歇地操作第二开关，同时保持第一个开关在更高的速度范围内关闭。

3. 发明授权

US4107586A Control system for a compound DC electric motor 失效
标题翻译：复合直流电动机控制系统
公开(公告)号：US4107586A
公开(公告)日：1978-08-15
申请号：US761929
申请日：1977-01-24
申请人： Frank S. Buchwald , Grant C. Melocik
发明人： Frank S. Buchwald , Grant C. Melocik
IPC分类号： H02P1/18 , H02P1/16
CPC分类号： H02P1/18 , Y10S388/921
摘要： A control system for a compound DC electric motor includes a shunt field winding connected in parallel with a series field winding, with both windings being connected to a power source. A time delay is positioned between the series field winding and the power source for energizing the series field winding a predetermined time period after the energization of the shunt field winding.
摘要翻译：复合DC电动机的控制系统包括与串联励磁绕组并联连接的并联励磁绕组，两个绕组连接到电源。在串联励磁绕组和电源之间设置时间延迟，用于在分励励磁绕组通电之后的预定时间段内对串联励磁绕组供电。

4. 发明授权

US4080556A Compound D.C. electrical motor with shunt field demagnetization protection 失效
标题翻译：复合直流电动机，具有分励场退磁保护
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。

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