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公开(公告)号：US5325553A
公开(公告)日：1994-07-05
申请号：US136801
申请日：1993-10-14
IPC分类号： A47C27/045 , A47C27/04 , A47C27/07
CPC分类号： A47C27/0456
摘要： A mattress spring structure is provided with a strengthened central area thereon to provide greater support for a user's body lumbar region when received thereon. The strengthening is provided with a continuous frame that encircles coil springs over a major expanse of the central area, this frame being connected to first and last transverse rows of coils in the central area and extra central area transverse coil rows next adjacent the said first and last rows. The frame also connected to adjacently paired longitudinally arranged coils springs in the central area at both sides of the spring structure. High carbon steel of six or nine gauge is used for the frame.
摘要翻译： 床垫弹簧结构在其上设置有加强的中心区域，以在其上接收时为使用者的身体腰部区域提供更大的支撑。 该加强件设置有围绕中心区域的主要区域上的螺旋弹簧的连续框架，该框架连接到中心区域中的第一和最后横向线圈，并且邻近所述第一和第二区域附近的额外的中心区域横向线圈排 最后一行。 框架还连接到弹簧结构两侧的中心区域中相邻成对的纵向布置的线圈弹簧。 框架采用6或9规格的高碳钢。
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2.发明授权
公开(公告)号：US3970036A
公开(公告)日：1976-07-20
申请号：US489389
申请日：1974-07-17
IPC分类号： G03G15/08
CPC分类号： G03G15/0853
摘要： A toner concentration detecting and toner replenishing system for use in an electrostatic copier having a magnetic brush which carries dry developer comprising a mixture of ferromagnetic carrier particles and toner particles into contact with the surface of a photoconductor upon which a latent electrostatic image has been formed, in which system a quantity of developer is removed from the magnetic brush after development of the image and the brush leaves the surface. The removed developer is directed into a dielectric tube having a restricted outlet which inhibits unstable flow through the tube so that developer in the tube determines the inductance of a coil surrounding the tube. The coil is one element of the tuned circuit of a sensing oscillator, the output frequency of which is compared with that of a tunable reference oscillator to provide a frequency difference signal which is a measure of the relative proportion of toner to carrier in the developer. This frequency difference signal is employed to actuate a toner replenishing system to feed toner from the supply to the developer supply as required to maintain the toner concentration substantially constant.
摘要翻译： 一种用于具有磁刷的静电复印机的调色剂浓度检测和调色剂补充系统，所述磁刷携带含有铁磁性载体颗粒和调色剂颗粒的混合物的干燥显影剂与形成有静电潜像的感光体的表面接触， 在该系统中，在显影图像和刷子离开表面之后，从磁刷除去一定数量的显影剂。 去除的显影剂被引导到具有限制出口的电介质管中，该限制出口阻止不稳定的流过管，使得管中的显影剂确定围绕管的线圈的电感。 线圈是感测振荡器的调谐电路的一个元件，其输出频率与可调参考振荡器的输出频率进行比较，以提供频率差信号，其是调色剂与显影剂中载体的相对比例的量度。 使用该频率差信号来驱动调色剂补充系统，以根据需要将调色剂从供给源供应到显影剂供应源，以保持调色剂浓度基本上恒定。
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公开(公告)号：US4733235A
公开(公告)日：1988-03-22
申请号：US665525
申请日：1984-10-26
CPC分类号： G01B7/003 , G01D5/2415
摘要： A capacitance type displacement measuring instrument is disclosed in which a change in electric capacity between electrodes due to a change in displacement between two members movable relative to each other is detected on the basis of a change in phase of a detection signal and a displacement value between the two members is measured from the change in the capacity. AC signals are successively applied to transmitting electrodes provided on one of the members at a predetermined pitch by a multiplexer and signals induced in transfer electrodes at a predetermined pitch differing from the aforesaid pitch of the transmitting electrodes are received by pickup electrodes provided on the aforesaid one of the members. The relative displacement is detected from a change in phase of a received signal of substantially triangular waveform, which are obtained by the pickup electrode.
摘要翻译： 公开了一种电容型位移测量仪器，其中，基于检测信号的相位变化和检测信号的相位变化以及两个位置之间的位移值，检测由于可相对于彼此移动的两个构件之间的位移变化引起的电极之间的电容的变化 这两个成员是从容量的变化来衡量的。 AC信号通过多路复用器以预定间距连续施加到设置在其中一个构件上的发射电极，并且以与发送电极的上述间距不同的预定间距在传输电极中感应的信号由设置在上述一个上的拾取电极接收 的成员。 从由拾取电极获得的基本三角波形的接收信号的相位变化来检测相对位移。
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公开(公告)号：US3999687A
公开(公告)日：1976-12-28
申请号：US632367
申请日：1975-11-17
CPC分类号： G03G15/0853 , Y10S222/01
摘要： A toner concentration detecting and toner replenishing system for use in an electrostatic copier having a magnetic brush which carries dry developer comprising a mixture of ferromagnetic carrier particles and toner particles into contact with the surface of a photoconductor upon which a latent electrostatic image has been formed, in which system a quantity of developer is removed from the magnetic brush after development of the image and the brush leaves the surface. The removed developer is directed into a dielectric tube having a restricted outlet which inhibits unstable flow through the tube so that developer in the tube determines the inductance of a coil surrounding the tube. The coil is one element of the tuned circuit of a sensing oscillator, the output frequency of which is compared with that of a tunable reference oscillator to provide a frequency difference signal which is a measure of the relative proportion of toner to carrier in the developer. This frequency difference signal is employed to actuate a toner replenishing system to feed toner from the supply to the developer supply as required to maintain the toner concentration substantially constant.
摘要翻译： 一种用于具有磁刷的静电复印机的调色剂浓度检测和调色剂补充系统，所述磁刷携带含有铁磁性载体颗粒和调色剂颗粒的混合物的干燥显影剂与形成有静电潜像的感光体的表面接触， 在该系统中，在显影图像和刷子离开表面之后，从磁刷除去一定数量的显影剂。 去除的显影剂被引导到具有限制出口的电介质管中，该限制出口阻止不稳定的流过管，使得管中的显影剂确定围绕管的线圈的电感。 线圈是感测振荡器的调谐电路的一个元件，其输出频率与可调参考振荡器的输出频率进行比较，以提供频率差信号，其是调色剂与显影剂中载体的相对比例的量度。 使用该频率差信号来驱动调色剂补充系统，以根据需要将调色剂从供给源供应到显影剂供应源，以保持调色剂浓度基本上恒定。
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