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    • 8. 发明申请
    • CHART RECORDER
    • 图表记录仪
    • WO1993001748A1
    • 1993-02-04
    • PCT/US1992005860
    • 1992-07-22
    • QUINTON INSTRUMENT COMPANYHOLLMAN, WilliamBURROWS, Fremont, WilliamROTUNDA, Jonh, Thomas
    • QUINTON INSTRUMENT COMPANY
    • A61B05/432
    • A61B5/0432G01D9/10G01D15/28
    • A chart recorder (10) is disclosed having an automatic paper loading system, an automatic tensioning system and an 'odometer' system for determining the amount of paper moved through the chart recorder. The chart recorder (10) includes a print roller (34) and a feed roller (22), both in frictional contact with the paper in the recorder and both connected to and rotated by a motor. The feed roller (22) is connected to the motor through a one way clutch that allows the feed roller (22) to 'free wheel' when the feed roller (22) is rotated at a faster rate, due to frictional contact with the paper, than the roller would be rotated by the motor (56). Dissipative forces in the one way clutch (68) and bearings (24) of the feed roller (22) cause it to resist being rotated which imparts tension to the paper and draws it into contact with a paper guide (14). The chart recorder (10) also has a system for positioning the paper at the top of form position before printing begins and an 'odometer' system for determining the amount of paper moved through the chart recorder. The 'odometer' system includes a timer for measuring the length of time the paper is moved through the chart recorder and a control system, preferably including a microprocessor, which multiplies the length of time the paper has moved through the chart recorder by the rate that the paper is moved through the chart recorder to determine the length of paper moved through the chart recorder.
    • 9. 发明申请
    • VACUUM DRUM FOR MOUNTING MEDIA OF DIFFERENT SIZES
    • 用于安装不同尺寸介质的真空鼓
    • WO1994019902A1
    • 1994-09-01
    • PCT/US1994002075
    • 1994-02-14
    • INTERGRAPH CORPORATION
    • INTERGRAPH CORPORATIONBOSY, Brian
    • H04N01/08
    • H04N1/0813B41F27/1212G01D9/38G01D15/28G03B27/60H04N1/08H04N1/0839
    • A rotatable drum for use in a plotter, or similar device, that provides vacuum for holding the film or other media to the drum's surface, so as to easily accommodate films of various sizes. The drum includes first and second journals (10) and a plate (7) mounted on the circumference of the first and second journals. At least one of the journals has defined on its circumference circumferential channels. The plate (7) has interior and exterior sides, and the first and second journals and a portion of the plate's interior side define a chamber (3). The plate's exterior side has defined thereon a plurality of grooves (72). In one embodiment, at least one of the grooves, associated with a first film size, is in fluid communication with the chamber (3), and some of the remaining grooves, associated with the larger film sizes, are in fluid communication with the channels. A vacuum is supplied to the chamber, and a valve (50) is provided for controlling fluid communication between the channels and the chamber.
    • 用于绘图仪或类似装置的可旋转滚筒,其提供用于将薄膜或其它介质保持在滚筒表面的真空,以便容易地容纳各种尺寸的薄膜。 鼓包括第一和第二轴颈(10)和安装在第一和第二轴颈的圆周上的板(7)。 至少有一个日志已经在其周边圆周通道上定义了。 板(7)具有内侧和外侧,并且第一和第二轴颈和板的内侧的一部分限定了腔室(3)。 板的外侧在其上限定有多个凹槽(72)。 在一个实施例中,与第一膜尺寸相关联的凹槽中的至少一个与腔室(3)流体连通,并且与较大膜尺寸相关联的一些剩余凹槽与通道流体连通 。 向室提供真空,并且提供阀(50)以控制通道和腔室之间的流体连通。