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公开(公告)号：US4162436A
公开(公告)日：1979-07-24
申请号：US828275
申请日：1977-08-29
CPC分类号： H02P7/29
摘要： A control system for powering the direct current drive motor of an electric vehicle from a storage battery employs a semi-conductor switch to connect the battery to the motor. Speed control of the vehicle is achieved through operator control of an accelerator which provides an analog output voltage. A multi-vibrator provides a bi-valued output signal varying between 100% on time and 100% off time as a function of the accelerator output. The motor energizing switch is conditioned by this output and by the output of a circuit which compares the motor armature current to a reference value. The circuit includes protection elements so that the switch is opened when the armature current exceeds a preset maximum and is allowed to close again if the multivibrator is still in an "on" mode when the armature current decays below a lower preset value.
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公开(公告)号：US4066934A
公开(公告)日：1978-01-03
申请号：US570628
申请日：1975-04-23
CPC分类号： H02P7/29
摘要： A control system for powering the direct current drive motor of an electric vehicle from a storage battery employs a semi-conductor switch to connect the battery to the motor. Speed control of the vehicle is achieved through operator control of an accelerator which provides an analog output voltage. A multi-vibrator provides a bi-valued output signal varying between 100% on time and 100% off time as a function of the accelerator output. The motor energizing switch is conditioned by this output and by the output of a circuit which compares the motor armature current to a reference value. The circuit includes protection elements so that the switch is opened when the armature current exceeds a preset maximum and is allowed to close again if the multivibrator is still in an "on" mode when the armature current decays below a lower preset value.
摘要翻译： 用于从蓄电池供电的电动车辆的直流驱动电动机的控制系统采用半导体开关将电池连接到电动机。 通过操作者控制提供模拟输出电压的加速器来实现车辆的速度控制。 多重振动器提供双向输出信号，该信号作为加速器输出的函数在100％的时间和100％的关闭时间之间变化。 电动机通电开关由该输出和电机的输出调节，该电路将电动机电枢电流与参考值进行比较。 该电路包括保护元件，使得当电枢电流超过预设最大值时开关断开，并且当电枢电流衰减到低于预设值时，如果多谐振荡器仍处于“导通”模式，则允许再次闭合开关。
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公开(公告)号：US4166978A
公开(公告)日：1979-09-04
申请号：US909685
申请日：1978-05-25
摘要： A two-way voice controlled communication system for use with a protective helmet. The communication system includes a transmitting circuit which is normally off, and which is voice actuated, and a receiving circuit which is normally on. The transmitting circuit includes a microphone and an electronic switch which turns the transmitting circuit on and the receiving circuit off in response to the presence of an output from the microphone, and turns the transmitting circuit off and the receiving circuit on substantially immediately in response to the absence of a microphone output. Thus the system approximates two-way real-time communication by permitting one user of the system to interrupt the speech of another user of the system. The system is designed primarily for far field communication, that is, omnidirectional communication where the spatial positioning of one communication system relative to a second communication system is essentially independent of the distance between the two systems.
摘要翻译： 一种用于防护头盔的双向语音控制通信系统。 通信系统包括通常关闭并且被语音驱动的发送电路和正常接通的接收电路。 发射电路包括麦克风和电子开关，其响应于麦克风的输出的存在而使发射电路接通和接收电路断开，并且基本上立即将发射电路和接收电路响应于 没有麦克风输出。 因此，系统通过允许系统的一个用户中断系统的另一个用户的语音来逼近双向实时通信。 该系统主要用于远场通信，即全向通信，其中一个通信系统相对于第二通信系统的空间定位基本上独立于两个系统之间的距离。
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公开(公告)号：US4112393A
公开(公告)日：1978-09-05
申请号：US790436
申请日：1977-04-25
CPC分类号： H05B6/06 , H03B5/1203 , H03B5/1231 , H03B5/1296 , A47B2031/026 , H03B2200/001 , Y10S165/919
摘要： An induction heating generator consists of a Hartley oscillator employing a tank circuit, including the induction heating coil, disposed in series with the emitter-collector circuit of the transistor. A bias circuit consisting of the parallel combination of a capacitor and diode is connected to the base and the feed-back voltage to the base is generated by a tickler coil. In the absence of oscillations the base is biased for class A operation and the resulting feed-back current charges the bias circuit to shift the operating point to class C operation. The bias voltage is decreased when the tank coil is loaded, lowering its impedance. This maintains stable operation of the oscillator independent of variations in the load. When the coupling between the load and the inductor is so great as to overload the oscillator, the bias circuit prevents oscillation.
摘要翻译： 感应加热发生器由采用包括感应加热线圈的槽电路的哈特利振荡器组成，与晶体管的发射极 - 集电极电路串联设置。 由电容器和二极管的并联组合组成的偏置电路连接到基极，并且通过回波线圈产生到基极的反馈电压。 在没有振荡的情况下，基极被偏置用于A类操作，并且所产生的反馈电流对偏置电路充电以将工作点移动到C类工作。 当蓄电池线圈加载时，偏置电压降低，降低其阻抗。 这保持了振荡器的稳定运行，而与负载的变化无关。 当负载和电感之间的耦合如此之大使振荡器过载时，偏置电路可以防止振荡。
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公开(公告)号：US4110587A
公开(公告)日：1978-08-29
申请号：US758083
申请日：1977-01-10
CPC分类号： H05B6/06 , A47J39/006 , H05B6/129 , A47B2031/026 , H03B2200/001
摘要： Meals for institutional feeding are arranged on trays in a central commissary with hot and cold food portions in separate containers. The containers for the hot items have bases formed with metallic plates and thermally insulated covers with internal metallic heat radiators. The trays are arranged in stacks in a refrigerated transport cart having spaced shelves which extend between the trays and include induction heating coils which produce heat generating currents in the metallic elements of the bases and covers of the hot food containers, heating these food portions while the other items are refrigerated. The hot food containers are provided in a variety of configurations each of which is heated at a different rate by the coils so the serving temperature of the food is determined by the type of its container.
摘要翻译： 机构喂养的膳食安排在一个中央小卖部的托盘上，冷藏食品部分在不同的容器中。 用于热物品的容器具有由金属板形成的底座和具有内部金属散热器的隔热盖。 托盘被布置在具有在托盘之间延伸的间隔架的冷藏运输车中，并且包括感应加热线圈，其在热食品容器的基部和盖的金属元件中产生热量产生电流，加热这些食物部分，同时 其他物品冷藏。 热食品容器设置有各种构造，每个构造以不同的速率被线圈加热，因此食物的服务温度由其容器的类型决定。
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公开(公告)号：US5605175A
公开(公告)日：1997-02-25
申请号：US448805
申请日：1995-05-24
IPC分类号： B60K15/035 , F16K24/04 , F16K31/18
CPC分类号： B60K15/03519 , F16K24/042 , B60K2015/03576 , Y10S251/901 , Y10T137/0874 , Y10T137/3099
摘要： A fluid-responsive vent control valve for an automobile fuel tank in which a liquid level responsive float controls a flexible, ribbon type valve member to peel it on and off a valve seat to open and close the valve. In one embodiment the float and outlet structure are offset. In an alternate embodiment the float and vent outlet are coaxial, and the ribbon valve is attached between the float and the valve body with a vent closure portion aligned with the outlet and a hinge portion offset from the outlet and connected to the float to provide opening and closing force to the ribbon valve. The outlet is preferably circular, and further includes a roundoff notch which cannot be closed by the pressure differential across the ribbon valve, but requires a final closing movement by the float and closure assist structure to fully close the valve.
摘要翻译： 一种用于汽车燃料箱的流体响应性通风控制阀，其中液位响应浮子控制柔性带状阀构件以将阀座开启和关闭以打开和关闭阀。 在一个实施例中，浮动和出口结构被偏移。 在替代实施例中，浮子和排气出口是同轴的，并且带状阀被附接在浮子和阀体之间，其中通气口闭合部分与出口对准并且铰链部分偏离出口并连接到浮子以提供开口 以及与带状阀的关闭力。 出口优选是圆形的，并且还包括不能通过带状阀的压力差关闭的圆角切口，但需要通过浮子和关闭辅助结构完全关闭阀的最终关闭运动。
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公开(公告)号：US4688394A
公开(公告)日：1987-08-25
申请号：US874668
申请日：1986-06-16
申请人： Lindsey E. Waldorf
发明人： Lindsey E. Waldorf
CPC分类号： B60H1/00007 , F25B13/00 , F25B41/04 , F25B2313/02521 , F25B2313/02522 , F25B2313/02523
摘要： An automotive heater and air conditioner in the form of a closed circuit reversible heat pump in which one internal heat exchanger accommodates both heating and cooling, selectively, and only a single set of ducts is required. Supplemental energy is provided in the system by using external heat exchanger means in close exchange proximity to and served by the waste heat of the automotive engine. The single exchanger selectively functions as evaporator and condenser. A reversible expansion valve functions between the external and inboard exchangers permitting selected conversion of the exchangers from a condenser to an evaporator function. Valving around the compressor permits selected directional control over refrigerant flow. The compressor can be selectively disconnected to turn off the heat pump. Air controllably ducted through, over and around the inboard exchanger is circulated into the passenger compartment to cool the occupants, to warm the occupants, and to defrost the windshield.
摘要翻译： 汽车加热器和空气调节器，其形式为闭路可逆热泵，其中一个内部热交换器选择性地适应加热和冷却，并且仅需要一组管道。 通过使用外部热交换器装置，靠近汽车发动机的废热并由其服务，在系统中提供补充能量。 单个交换器选择性地用作蒸发器和冷凝器。 可逆膨胀阀在外部和内部交换器之间起作用，允许将交换器从冷凝器选择转换成蒸发器功能。 压缩机周围的阀门允许选择对制冷剂流动的方向控制。 压缩机可以选择性地断开以关闭热泵。 可控制地穿过内侧交换机的上方和周围的空气被循环到乘客舱中以冷却乘客，以使乘员温暖并且使挡风玻璃除霜。
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公开(公告)号：US4020310A
公开(公告)日：1977-04-26
申请号：US560396
申请日：1975-03-20
CPC分类号： H05B6/06 , H03B5/1203 , H03B5/1231 , H03B5/1296 , A47B2031/026 , H03B2200/001 , Y10S165/919
摘要： Meals for institutional feeding are arranged on trays in a central commissary with hot and cold food portions in separate containers. The containers for the hot items have bases formed with metallic plates and thermally insulated covers with internal metallic heat radiators. The trays are arranged in stacks in a refrigerated transport cart having spaced shelves which extend between the trays and include induction heating coils which produce heat generating currents in the metallic elements of the bases and covers of the hot food containers, heating these food portions while the other items are refrigerated. The hot food containers are provided in a variety of configurations each of which is heated at a different rate by the coils so the serving temperature of the food is determined by the type of its container.An alternative stationary heating mechanism has spaced shelves containing induction heating coils adapted to receive a plurality of stacked trays supported on a mobile cart. After the trays are interleaved with the stationary shelves, sections of the shelves are moved vertically to bring the coils into proximity to the metallic elements of the hot food containers.Alternative means are disclosed for heating the base and cover plates by other than inductive heating means.
摘要翻译： 机构喂养的膳食安排在一个中央小卖部的托盘上，冷藏食品部分在不同的容器中。 用于热物品的容器具有由金属板形成的底座和具有内部金属散热器的隔热盖。 托盘被布置成堆放在具有在托盘之间延伸的间隔架的冷藏运输车厢中，并且包括感应加热线圈，其在热食品容器的基部和盖的金属元件中产生热量产生电流，加热这些食物部分，同时 其他物品冷藏。 热食品容器设置有各种构造，每个构造以不同的速率被线圈加热，因此食物的服务温度由其容器的类型决定。
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公开(公告)号：US5960816A
公开(公告)日：1999-10-05
申请号：US824324
申请日：1997-03-26
IPC分类号： B60K15/035 , F16K24/04
CPC分类号： B60K15/03519 , F16K24/044 , Y10T137/0874 , Y10T137/3099
摘要： A fuel level responsive vent valve assembly adaptable to a variety of different mounting requirements in a vehicle fuel tank. In general, the vent valve assembly comprises a standard, valve body, a top cover adapted to mate with the standard valve body at a vent outlet interface for a sealed vapor venting connection, and separately formed longitudinal connector means having a preassembly end for preassembly to a standard interface on the lower surface of the top cover, and an assembly end for longitudinally locking the standard valve body to the top cover. The standard assembly end of the longitudinal connectors can be varied in length to accommodate different valve height mounting requirements in different fuel tank applications. In a preferred embodiment the longitudinal connectors comprise metal pins or rods which can be pre-formed or cut to length to accommodate the standard valve body at different distances from the top cover. In addition to providing a longitudinal lock between the valve body and the top cover, the connector pins also provide an impact-resistant reinforcement to the sealed connection at the vent outlet interface.
摘要翻译： 一种适用于车辆燃料箱中各种不同安装要求的燃料级响应式排气阀组件。 通常，排气阀组件包括标准的阀体，适于在用于密封的蒸气排放连接的通气出口接口处与标准阀体配合的顶盖，以及单独形成的纵向连接器装置，其具有用于预组装的预组装端 在顶盖的下表面上的标准接口和用于将标准阀体纵向锁定到顶盖的组装端。 纵向连接器的标准组件端可以在长度上变化，以适应不同燃料箱应用中不同的阀高度安装要求。 在优选实施例中，纵向连接器包括可以预先形成或切割成长度的金属销或杆，以适应与顶盖不同距离的标准阀体。 除了在阀体和顶盖之间提供纵向锁定之外，连接器销还在通气出口接口处为密封连接提供抗冲击强化。
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公开(公告)号：US5954082A
公开(公告)日：1999-09-21
申请号：US967186
申请日：1997-10-29
IPC分类号： F02M37/00 , B60K15/035 , F16K24/04
CPC分类号： B60K15/03519 , F16K24/044 , B60K2015/03585 , Y10T137/0874 , Y10T137/3099 , Y10T137/742
摘要： An improved apparatus and method for calibrating a float-type vent valve for use in an automobile fuel tank. The valve is provided with a calibration plate in the lower end thereof below the float, the calibration plate defining an axially-adjustable support for the spring which balances the float. The calibration plate includes a force probe aperture through which a force measuring device of known type can be inserted to measure the downward force of the spring-balanced float at a specified distance from closure, preferably a near-closed position. The calibration plate then is adjusted up or down as needed until a position is determined where the spring-balanced float is properly calibrated, and then the calibration plate is permanently secured in place on the valve body so that the valve remains calibrated.
摘要翻译： 一种用于校准用于汽车燃料箱的浮子式排气阀的改进的装置和方法。 该阀在其下端设置有校准板，该校准板位于浮子下方，校准板限定用于平衡浮子的弹簧的可轴向调节的支撑件。 校准板包括力探测器孔，通过该力探测孔可以插入已知类型的力测量装置，以测量弹簧平衡浮子在距关闭，优选接近闭合位置指定距离处的向下的力。 然后根据需要向上或向下调整校准板，直到确定弹簧平衡浮子正确校准的位置，然后将校准板永久固定在阀体上的适当位置，使得阀保持校准。
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