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    • 6. 发明授权
    • Vacuum level switch for a vacuum corrugated feeder
    • 用于真空波纹进料器的真空液位开关
    • US08042799B2
    • 2011-10-25
    • US12559934
    • 2009-09-15
    • Robert A. Clark
    • Robert A. Clark
    • B65H3/08B65H3/12
    • B65H3/128B65H7/16B65H2515/342B65H2801/06B65H2220/03
    • This invention provides a simple vacuum level switch to be used inside the feedhead's vacuum plenum to detect when the vacuum level exceeds a predefined threshold. This switch is composed of an opening in the plenum that is covered by a cap which is in turn spring-loaded against the opening. The mechanical properties of the spring are such that the cap is pushed away from the opening by ambient air pressure at the point when the vacuum threshold has been reached during sheet acquisition. A Hall Effect or optical sensor is used to detect this motion and the corresponding signal is sent to the feeder controller. This enables more intelligent control of the feeder while also providing an inexpensive method for tracking sheet acquisition times.
    • 本发明提供一种简单的真空液位开关,用于进料头的真空室内使用,以检测何时真空度超过预定阈值。 该开关由通气孔盖的开口组成,该开口被盖帽覆盖,该盖子又弹簧加载在开口上。 弹簧的机械性能使得在片材采集期间达到真空阈值的时刻,通过环境空气压力将盖子从开口推开。 使用霍尔效应或光学传感器来检测该运动,并将相应的信号发送到馈线控制器。 这使得能够更智能地控制馈线,同时还提供了用于跟踪片材采集时间的便宜方法。
    • 7. 发明申请
    • VACUUM LEVEL SWITCH FOR A VACUUM CORRUGATED FEEDER
    • 真空泵供应器真空度开关
    • US20110062652A1
    • 2011-03-17
    • US12559934
    • 2009-09-15
    • ROBERT A. CLARK
    • ROBERT A. CLARK
    • B65H3/14B65H7/14
    • B65H3/128B65H7/16B65H2515/342B65H2801/06B65H2220/03
    • This invention provides a simple vacuum level switch to be used inside the feedhead's vacuum plenum to detect when the vacuum level exceeds a predefined threshold. This switch is composed of an opening in the plenum that is covered by a cap which is in turn spring-loaded against the opening. The mechanical properties of the spring are such that the cap is pushed away from the opening by ambient air pressure at the point when the vacuum threshold has been reached during sheet acquisition. A Hall Effect or optical sensor is used to detect this motion and the corresponding signal is sent to the feeder controller. This enables more intelligent control of the feeder while also providing an inexpensive method for tracking sheet acquisition times.
    • 本发明提供一种简单的真空液位开关,用于进料头的真空室内使用,以检测何时真空度超过预定阈值。 该开关由通气孔盖的开口组成,该开口被盖帽覆盖,该盖子又弹簧加载在开口上。 弹簧的机械性能使得在片材采集期间达到真空阈值的时刻,通过环境空气压力将盖子从开口推开。 使用霍尔效应或光学传感器来检测该运动,并将相应的信号发送到馈线控制器。 这使得能够更智能地控制馈线,同时还提供了用于跟踪片材采集时间的便宜方法。
    • 8. 发明授权
    • Method and apparatus for serial data communications using FIFO buffers
    • 使用FIFO缓冲区进行串行数据通信的方法和装置
    • US5557751A
    • 1996-09-17
    • US501704
    • 1995-07-12
    • David A. BanmanRobert A. Clark
    • David A. BanmanRobert A. Clark
    • G06F13/00G06F5/06G06F13/38
    • G06F5/06G06F13/385
    • An improved serial communications circuit, which includes support for Infra Red communications over a number of incompatible IR protocols is provided. To improve serial throughput, and reduce the overhead required of a Central Processing Unit, separate Transmit and Receive FIFO's are provided to buffer incoming and outgoing serial data. These FIFO's are controlled by a state machine which can adjust interrupt requests to the CPU based on the contents of the FIFO's and the time elapsed between interrupt service requests. In addition an improved multi-mode Infra Red modulation and demodulation system is provided which may support, alongside standard hard wired serial communications, wireless IR communications with personal information managers, laptop and palmtop computers, and other personal and professional electronic equipment which may employ an IR remote control.
    • 提供了一种改进的串行通信电路,其包括通过许多不兼容的IR协议支持红外通信。 为了提高串行吞吐量,并减少中央处理单元所需的开销,提供单独的发送和接收FIFO来缓冲输入和输出的串行数据。 这些FIFO由状态机控制,该状态机可以根据FIFO的内容和中断服务请求之间的时间调整对CPU的中断请求。 另外,提供了一种改进的多模红外线调制和解调系统,其可以与标准硬连线串行通信一起支持与个人信息管理器,膝上型计算机和掌上电脑的无线IR通信以及可以使用 红外遥控器。
    • 10. 发明授权
    • Telephone pay station
    • 电话付费站
    • US4638121A
    • 1987-01-20
    • US753534
    • 1985-07-10
    • Robert A. Clark, Jr.
    • Robert A. Clark, Jr.
    • H04M17/02
    • H04M17/026
    • A coin receiving prepay telephone station for local calls includes a telephone receiver and transmitter with a handset and a supporting hook switch cradle therefor. The station further includes a coin chute having an open end for receiving a coin and a lower end for discharging coins into a coin box. A solenoid controlled arm is movable transversely into and out of the coin chute adjacent a level near the open end for normally retaining a coin deposited in the chute in a partially exposed retrievable position permitting manual extraction from the chute if a call dialed from the station is not answered. Circuitry is provided for activating the solenoid controlled arm to move out of the coin chute permitting the coin previously retained therein to drop into the coin box when a called party answers a call of over three digits dialed at the station.
    • 接收用于本地呼叫的预付电话站的硬币包括具有手机的电话接收器和发送器以及用于其的支撑钩开关支架。 车站还包括具有用于接收硬币的开口端的硬币滑槽和用于将硬币放入硬币盒的下端。 螺线管控制的臂可以横向进入和离开硬币滑槽,靠近开口端的水平面,用于通常将沉积在滑槽中的硬币保持在部分暴露的可回收位置,从而允许从车站拨打的呼叫是从滑槽手动提取的 没有回答 提供电路,用于启动电磁控制臂移出硬币滑槽,允许先前保留在其中的硬币落入硬币盒中,当被叫方应答在该台上拨打的三位以上的电话时。