SYSTEM AND METHOD FOR CARRIER IDENTIFICATION IN A PNEUMATIC TUBE SYSTEM

    公开(公告)号:US20130204431A1

    公开(公告)日:2013-08-08

    申请号:US13835718

    申请日:2013-03-15

    CPC classification number: B65G51/44 B65G51/42 B65G2203/046 G05B11/44

    Abstract: A system and method provides for the identification and monitoring of carriers within a pneumatic carrier system. Each carrier which is to be employed within the system includes an identification device such as a radio frequency identification (RFID) chip which has stored thereon identification information for the carrier. Positioned throughout the system are communications devices such as antennas and readers which are employed to read and/or write identification information on the chip. When a carrier is put in the system, a destination location can be associated with the particular carrier ID. This associated information is then employed to, among many things, monitor and confirm identity of the carrier as it moves to its destination.

    Variable-gradient spring sub-assembly
    2.
    发明授权
    Variable-gradient spring sub-assembly 失效
    可变梯度弹簧组件

    公开(公告)号:US4112960A

    公开(公告)日:1978-09-12

    申请号:US779511

    申请日:1977-03-21

    Abstract: A range spring sub-assembly providing a variable gradient with minimum hysteresis for the feedback assembly of a pneumatic transmitter. The sub-assembly is constituted by a helical spring whose lower end is secured to the pivoted feedback arm of the feedback assembly and whose upper end is coupled by a span adjustment screw to a fixed arm thereof. The arm porton of the screw extending above the fixed arm is engaged by a zero adjustment knob which rests on top of the fixed arm, whereby when the knob is turned, the screw is axially shifted to vary the tension of the spring coupled thereto. The span adjustment screw has a coupling terminal head that is received within the upper end of the spring and is provided with a set of outwardly projecting pins. The pins are at different heights and are interposed between adjacent convolutions of the spring whereby the pinned convolutions are rendered inactive and the convolutions therebelow remain active. By rotating the screw, the number of active convolutions is varied, thereby varying the gradient of the spring.

    Load sensing steering system with dual power source
    3.
    发明授权
    Load sensing steering system with dual power source 失效
    负载感应转向系统,双电源

    公开(公告)号:US4044786A

    公开(公告)日:1977-08-30

    申请号:US708657

    申请日:1976-07-26

    Applicant: James K. Yip

    Inventor: James K. Yip

    Abstract: A system for providing pressurized fluid to a primary load circuit and an auxiliary load circuit, the primary load circuit being of the type which provides a load pressure signal representative of the demand for fluid in the primary load circuit. The system includes first and second fluid pumps feeding first and second priority flow control valves, respectively, each of which has a primary outlet port connected to the primary load circuit and an auxiliary outlet port connected to the auxiliary load circuit. When the flow demand of the primary load circuit can be satisfied by the first pump, any excess flow available is fed by the first flow control valve to the auxiliary load circuit, and all of the flow from the second pump goes to the auxiliary circuit. If the flow demand of the primary load circuit is greater then the capacity of the first pump, all of its flow passes to the primary load circuit with none going to the auxiliary load circuit, and a novel pilot valve arrangement permits the load pressure signal from the primary load circuit to bias the second flow control valve to a position where a sufficient amount of the flow from the second pump is fed to the primary load circuit to meet the demand thereof, with the remainder of the flow going from the second flow control valve to the auxiliary load circuit.

    Abstract translation: 一种用于将加压流体提供给主负载电路和辅助负载电路的系统,所述主负载电路是提供代表对主负载电路中的流体需求的负载压力信号的类型的系统。 该系统包括分别供应第一和第二优先流量控制阀的第一和第二流体泵,每个流量控制阀具有连接到主负载回路的主出口和连接到辅助负载回路的辅助出口。 当主负载电路的流量需求可以由第一泵满足时,任何可用的过量流量由第一流量控制阀馈送到辅助负载回路,并且来自第二泵的所有流量都流到辅助回路。 如果主负载电路的流量需求大于第一泵的容量,则其所有流量都不会传递到主负载电路,而不需要辅助负载电路,并且新颖的先导阀装置允许负载压力信号从 所述主负载电路将所述第二流量控制阀偏置到足够量的来自所述第二泵的流量被供给到所述主负载电路以满足其要求的位置,其中所述流量来自所述第二流量控制 阀门到辅助负载电路。

    Low pressure operable, diaphragm type logical element
    4.
    发明授权
    Low pressure operable, diaphragm type logical element 失效
    低压可操作,隔膜式逻辑元件

    公开(公告)号:US3889711A

    公开(公告)日:1975-06-17

    申请号:US34640773

    申请日:1973-03-30

    Inventor: HIRAO TOSHIRO

    CPC classification number: F15C3/04 Y10T137/87298

    Abstract: A low pressure operable, diaphragm-type logical product AND element includes a plurality of parallel pressure relief passages each of which may be closed by an external signal-actuated diaphragm to increase the pressure of an outlet which may be connected to several pure fluidic logic elements when all of the relief passages are closed. The logical summation element further incorporates an impedance matcher.

    Abstract translation: 低压可操作的隔膜式逻辑产品AND元件包括多个平行的压力释放通道,每个压力释放通道可以由外部信号致动隔膜封闭,以增加出口的压力,该出口可连接到若干纯流体逻辑元件 当所有救济通道都关闭时。 逻辑求和元件还包括阻抗匹配器。

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