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公开(公告)号：US4323023A
公开(公告)日：1982-04-06
申请号：US202207
申请日：1980-10-20
申请人： Howard L. Beckerman , Allan M. Dob
发明人： Howard L. Beckerman , Allan M. Dob
CPC分类号： D05B73/00 , D05B19/105
摘要： A sewing machine is provided with a hinging system which supports information bearing plates and a cover therefor. The plates are confined and concealed in a recess in the machine when the cover is closed and can pivot between positions in the recess and positions opposite the rear side of the cover when the cover is open.
摘要翻译： 缝纫机设有支撑信息轴承板和盖的铰链系统。 当盖关闭时，板被限制并隐藏在机器的凹部中，并且当盖打开时可以在凹部中的位置和与盖的后侧相对的位置之间枢转。
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公开(公告)号：US4193363A
公开(公告)日：1980-03-18
申请号：US031675
申请日：1979-04-19
申请人： Howard L. Beckerman , Allan M. Dob
发明人： Howard L. Beckerman , Allan M. Dob
CPC分类号： D05B59/02
摘要： A light detector is supported in a mask box which extends into the cavity accommodating the looptaker with an edge of the surface adjacent the looptaker and upstream to the air currents generated by the looptaker closer to the looptaker than an edge downstream in order to discourage lint build up on the adjacent surface. A light source is fashioned with a lens projecting into the cavity accommodating the looptaker similarly to discourage lint build up.
摘要翻译： 光检测器被支撑在掩模盒中，该掩模盒延伸到容纳凹槽的腔中，其表面的边缘靠近浸渍器，并且靠近由靠近挖掘机的凹槽产生的空气流，而不是下游边缘，以阻止棉绒构建 在相邻的表面上。 光源采用透镜突出到容纳凹槽的腔中，类似于阻止绒毛的积聚。
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3.发明授权Method and apparatus for controlling refrigerant gas in a low pressure refrigeration system 失效用于控制低压制冷系统中制冷剂气体的方法和装置
公开(公告)号：US5307643A
公开(公告)日：1994-05-03
申请号：US50894
申请日：1993-04-21
申请人： Howard L. Beckerman
发明人： Howard L. Beckerman
CPC分类号： F25B31/004 , F22B1/287 , F25B41/00 , F25B43/02 , F25B2400/01
摘要： A method and apparatus for controlling refrigerant gas pressure in a low pressure refrigeration system including a warm surface within a container. Liquid refrigerant is removed from the refrigeration system evaporator and sprayed on the warm surface, thereby vaporizing. The resulting pressure differential between the container and the evaporator causes the vaporized refrigerant to be returned to the evaporator through an open return line. The warm, surface is downwardly concave so that non-volatile liquid which had been mixed with the refrigerant can be collected from the bottom of the surface and transported to a location remote from the evaporator, thereby separating contaminants from refrigerant.
摘要翻译： 一种用于控制包括容器内的暖面的低压制冷系统中的制冷剂气体压力的方法和装置。 将液体制冷剂从制冷系统蒸发器中取出并喷射在温暖的表面上，从而蒸发。 容器和蒸发器之间产生的压力差导致蒸发的制冷剂通过打开的返回管线返回到蒸发器。 温暖的表面是向下凹的，使得已经与制冷剂混合的非挥发性液体可以从表面的底部收集并且被运送到远离蒸发器的位置，从而将污染物从制冷剂中分离出来。
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公开(公告)号：US5151638A
公开(公告)日：1992-09-29
申请号：US743939
申请日：1991-08-12
申请人： Howard L. Beckerman
发明人： Howard L. Beckerman
CPC分类号： H02H1/0007 , H02H3/382 , H02H7/0851
摘要： An arrangement for detecting a motor overload condition by examining the phase angle relationship between the motor voltage and current. As the load increases, the phase angle difference approaches zero. By measuring the zero crossings of the voltage and current and providing a signal representative of the time difference between these crossings, the phase angle relationship is determined and, accordingly, so is the motor load. Specifically, a saturable ferromagnetic core is utilized to detect the current zero crossings.
摘要翻译： 通过检查电动机电压和电流之间的相位角关系来检测电动机过载状况的装置。 随着载荷的增加，相位角差接近零。 通过测量电压和电流的过零点，并提供表示这些交叉点之间的时间差的信号，确定相位角关系，因此确定电机负载。 具体地，使用可饱和的铁磁核来检测当前的零交叉。
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5.发明授权Method and apparatus for electronically pressure sealing and leak testing an idle centrifugal chiller system 失效用于电子压力密封和泄漏测试的空转离心式制冷机系统的方法和装置
公开(公告)号：US4864829A
公开(公告)日：1989-09-12
申请号：US295907
申请日：1989-01-11
IPC分类号： F25B47/00
摘要： A method and apparatus for electronically pressure sealing and leak testing an idle centrifugal chiller system wherein a small positive differential is maintained between the internal refrigerant vessel pressure of the chiller system and the ambient atmosphere. This differential pressure is maintained by selectively applying heat to the refrigerant.
摘要翻译： 一种用于电子式压力密封和泄漏测试的空闲离心式冷却器系统的方法和装置，其中在冷却器系统的内部制冷剂容器压力和周围大气之间保持小的正差压。 通过选择性地对制冷剂施加热来维持该压差。
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公开(公告)号：US4408146A
公开(公告)日：1983-10-04
申请号：US229793
申请日：1981-01-30
申请人： Howard L. Beckerman
发明人： Howard L. Beckerman
CPC分类号： E05F15/41 , H02P7/03 , E05Y2201/646
摘要： An automatic door operator system is provided with a first potentiometer having its wiper arm coupled to a pivoting member whose angular position varies in accordance with the magnitude and direction of an obstructive load applied to the door. A second potentiometer is provided having its wiper arm coupled to a movable member whose position corresponds to the position of the door. The potentiometers are connected as voltage dividers and the voltages provided at their wiper arms are utilized for controlling the movement of the door.
摘要翻译： 自动门操作器系统设置有第一电位计，其第一电位计具有其联接到枢转构件的刮水器臂，其角位置根据施加到门的阻塞负载的大小和方向而变化。 提供了第二电位计，其具有与其位置对应于门的位置的可动构件连接的雨刮臂。 电位计作为分压器连接，其刮水器臂上提供的电压用于控制门的移动。
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公开(公告)号：US4315250A
公开(公告)日：1982-02-09
申请号：US102289
申请日：1979-12-10
申请人： John W. Wurst , Howard L. Beckerman
发明人： John W. Wurst , Howard L. Beckerman
CPC分类号： G08B5/36 , D05B19/105
摘要： An arrangement for utilizing a single lead for communication and control between a controller and a switch-indicator pair. The switch and indicator are connected and the single lead is connected at a junction point of the switch and the control input of the indicator so that when the switch is closed the lead carries thereon a signal indicative of switch closure and the controller may utilize this same lead to provide a signal for controlling the energization of the indicator.
摘要翻译： 用于利用单个引线在控制器和开关指示器对之间进行通信和控制的装置。 开关和指示灯被连接，并且单个引线连接在开关的接点和指示器的控制输入端，使得当开关闭合时，引线承载有指示开关闭合的信号，并且控制器可以使用该引线 导致提供用于控制指示器的通电的信号。
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公开(公告)号：US4283659A
公开(公告)日：1981-08-11
申请号：US137927
申请日：1980-04-07
摘要： A display system utilizing incandescent lamps arranged at the intersection points of a matrix array of row and column conductors includes a plurality of load resistors connecting the row conductors to a first voltage source and a plurality of load resistors connecting the column conductors to a second voltage source. To energize a selected lamp, the row conductor connected to that lamp is connected to the second voltage source and the column connected to that lamp is connected to the first voltage source.
摘要翻译： 使用布置在行和列导体矩阵阵列的交点处的白炽灯的显示系统包括将行导体连接到第一电压源的多个负载电阻器和将列导体连接到第二电压源的多个负载电阻器 。 为了激励所选择的灯，连接到该灯的行导体连接到第二电压源，并且连接到该灯的列连接到第一电压源。
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公开(公告)号：US4802055A
公开(公告)日：1989-01-31
申请号：US112517
申请日：1987-10-26
申请人： Howard L. Beckerman
发明人： Howard L. Beckerman
CPC分类号： H02H9/005
摘要： A transient voltage surge suppressor including first and second clamping stages with a surge reactor between the stages. The first stage comprises a metal oxide varistor and the second stage comprises a silicon surge suppressor diode. The surge reactor comprises first and second coils wound with the same polarity on a single ferromagnetic core.
摘要翻译： 一个瞬态电压浪涌抑制器，包括第一和第二钳位级与级之间的浪涌电抗器。 第一级包括金属氧化物变阻器，第二级包括硅浪涌抑制二极管。 浪涌电抗器包括在单个铁磁芯上以相同极性缠绕的第一和第二线圈。
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公开(公告)号：US4591769A
公开(公告)日：1986-05-27
申请号：US676097
申请日：1984-11-29
申请人： Howard L. Beckerman
发明人： Howard L. Beckerman
CPC分类号： H02P7/295
摘要： An improved arrangement for controlling the speed and direction of rotation of a DC motor responds to a variable bipolar input signal. A bipolar threshold detector coupled to the motor is used for the selective triggering of a triac during the appropriate half wave polarity of an AC source. Triac failure is prevented by a protection circuit. The arrangement incorporates a speed servo and senses the voltage across the triac to detect the speed of the motor.
摘要翻译： 用于控制直流电动机的转速和旋转方向的改进布置响应可变双极性输入信号。 耦合到电动机的双极性阈值检测器用于在AC电源的适当半波极性期间选择性地触发三端双向可控硅开关。 三端双向可控硅开关故障由保护电路防止。 该装置包含速度伺服器，并感测三端双向可控硅开关元件上的电压以检测电机的速度。
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