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    • 5. 发明授权
    • Drag clutch document feeder mechanism
    • 拖曳离合器进纸器机构
    • US5106071A
    • 1992-04-21
    • US497430
    • 1990-03-22
    • John F. Graham
    • John F. Graham
    • B65H3/52B65H7/12
    • B65H3/5246B65H7/12B65H2511/224B65H2511/524B65H2515/32
    • A document feed system is disclosed which comprises a feed wheel (10) mounted on a first rotatable shaft (13), and a retard wheel (11) mounted on a second rotatable shaft (14). The first shaft is driven by a motor and the second shaft is mounted in a bearing fixed in a pivoting arm. A first pulley (17) is fixed on the first shaft and a second pulley (19) is coupled to the second shaft through a slipping clutch (18). A belt (20) passes round the first and second pulleys and also round an idler pulley (21) which is rotatable on a spring loaded shaft (22). The arrangement is such that the belt (20) pulls the first and second shafts towards each other so that a document may be gripped between the feed and retard wheels. If a single document is located in the nip between the feed and retard wheels it will be driven in the direction of the arrow (24). However, if two documents are located side by side in the nip, one document will be driven in the direction of the arrow (24) while the other is retarded relative to that document.
    • 公开了一种文件馈送系统,其包括安装在第一可旋转轴(13)上的进给轮(10)和安装在第二可旋转轴(14)上的延迟轮(11)。 第一轴由马达驱动,第二轴安装在固定在枢转臂中的轴承中。 第一滑轮(17)固定在第一轴上,第二滑轮(19)通过滑动离合器(18)联接到第二轴。 皮带(20)穿过第一和第二皮带轮,并绕着可在弹簧加载的轴(22)上旋转的惰轮(21)。 这种布置使得带(20)将第一和第二轴相互拉动,使得文件可以被夹持在进给和延迟轮之间。 如果单个文件位于进料和减速轮之间的辊隙中,则它将沿箭头(24)的方向被驱动。 然而,如果两个文档位于压区中并排放置,则一个文档将沿着箭头(24)的方向被驱动,而另一个文档相对于该文档被延迟。
    • 6. 发明授权
    • Porosity measurement
    • 孔隙度测量
    • US4198853A
    • 1980-04-22
    • US956843
    • 1978-11-02
    • John F. GrahamDonald Hardy
    • John F. GrahamDonald Hardy
    • G01N15/08G01N15/00
    • G01N15/0826
    • The present invention provides a method and apparatus for evaluating the porosity of a sheet material at a given value of gas flow or pressure drop (PD), with account being taken of the following relationship between the parameters of flow and PD:Flow=A (PD).sup.N,in which one of the parameters is set at a number (e.g. 3) of values close to the said required value, the other parameter is measured at each, the values of A and N for the sample under test are calculated therefrom, and then the precise gas flow (or PD) at the given PD (or gas flow), and hence the porosity, is calculated from the said relationship. The automatic setting, and the calculations, are effected by means of a microprocessor.
    • 本发明提供了一种用于在给定的气流或压降(PD)值下评价片材的孔隙率的方法和装置,考虑到流动参数和PD之间的以下关系:流量= A( PD)N,其中一个参数被设置为接近所需值的数值(例如3),另一个参数在每个值处测量,由下式计算被测试样品的A和N值 ,然后根据所述关系计算给定PD(或气体流量)下的精确气体流量(或PD),从而计算孔隙率。 自动设置和计算通过微处理器实现。
    • 7. 发明申请
    • Excessive Wind Portal for Wind Turbines
    • 风力发电机风场过大
    • US20130017083A1
    • 2013-01-17
    • US13179718
    • 2011-07-11
    • John F. GrahamJonathan A. Paden
    • John F. GrahamJonathan A. Paden
    • F03D3/06F03D7/00
    • F03D7/0268F03D3/061F03D7/0232F03D7/0236F05B2240/213F05B2240/313Y02E10/74
    • Systems and methods for reducing wind pressure on wind turbine blades by selectively opening excessive wind portals in the turbine blades. One embodiment comprises a wind turbine system in which each of the turbine's blades has a portal therethrough that is opened or closed by a movable panel. Each panel is connected on one edge to the corresponding blade at the edge of the portal. Hook-and-loop material (Velcro) is attached to the edges of each portal and panel, allowing the panels to alternately open and then close the portals over a series of high wind events. Excessive wind pressure forces the panels to be released, opening the portals. Gravity or reversed wind direction with respect to the blade can be used to reseal the panels.
    • 通过选择性地打开涡轮机叶片中的过多风门来减小风力涡轮机叶片上的风压的系统和方法。 一个实施例包括风力涡轮机系统,其中每个涡轮机的叶片具有通过可移动面板打开或关闭的通过其的入口。 每个面板在一个边缘连接到门户边缘的相应刀片。 钩环材料(Velcro)连接到每个门和面板的边缘,允许面板通过一系列高风事件交替打开并关闭门户。 过大的风压迫使面板被释放,打开门户。 可以使用相对于叶片的重力或相反的风向来重新密封面板。