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    • 21. 发明申请
    • DOWNHOLE TOOL PROTECTOR APPARATUS AND METHOD
    • 卧式工具保护装置和方法
    • US20110206492A1
    • 2011-08-25
    • US13061851
    • 2009-08-19
    • Keith Scott Gaskin
    • Keith Scott Gaskin
    • B65D85/00E21B12/04B65B5/00
    • E21B12/04E21B19/00
    • An oil, gas or water borehole drill bit protector apparatus (10, 100, 200, 300, 400) comprises one or more protector portions (10A, 10B; 100A, 100B) adapted to be placed around and/or adapted to envelope at least a drilling portion of the drill bit; and the one or more protector portions comprising an aperture (16) through which a connection portion of the drill bit projects in use. The one or more protector portions are placed around and/or enveloping the drilling portion of the drill bit; and closed around the drilling portion of the drill bit such that the connection portion of the drill bit projects through the aperture of the one or more protector portions.
    • 一种油,气或水钻孔钻头保护器装置(10,100,200,300,400)包括一个或多个保护部分(10A,10B; 100A,100B),其适于放置在和/或适于至少包围 钻头的钻孔部分; 并且所述一个或多个保护器部分包括孔(16),所述钻头的连接部分在所述孔中突出。 一个或多个保护器部分放置在钻头的钻孔部分周围和/或包围钻头部分; 并且围绕钻头的钻孔部分闭合,使得钻头的连接部分突出通过一个或多个保护器部分的孔。
    • 22. 发明申请
    • CANISTER PURGE CONTROL VALVE CONTROL SYSTEMS
    • CANISTER泵控制阀控制系统
    • US20110017178A1
    • 2011-01-27
    • US12506283
    • 2009-07-21
    • William Keith McDonaldKeith Scott KollerEric A. MackeKevin PlymaleNiels Christopher KraghScott BohrEric David BramsonDennis Harrigan
    • William Keith McDonaldKeith Scott KollerEric A. MackeKevin PlymaleNiels Christopher KraghScott BohrEric David BramsonDennis Harrigan
    • F02M33/02F16K31/02
    • F02M33/08F02D41/003F02D41/20F02D2041/2027F02M25/0836
    • A purge control valve control system is provided for an internal combustion engine system, comprising: a voltage source having a positive potential and a negative potential; a purge control valve having a solenoid, such solenoid comprising an electrically inductive element, such inductive element having a first terminal coupled to the positive potential of the voltage source; a diode having an anode and a cathode. The control unit includes a transistor having: a control electrode fed by a train of pulses; a first electrode coupled to the negative potential of the voltage source; and a second electrode coupled to a second terminal of the inductive element and to the diode. A train of pulses fed to the control electrode is a pulse width modulated signal and switches the transistor between a conducting condition, wherein current passes between the first electrode and the second electrode, and a non-conducting condition, wherein current is prevented from passing between the first electrode and the second electrode. When the transistor is in the conducting condition current from the voltage source passes through the inductive element and through the first and second electrodes with a potential being produced across the diode to bias the diode to a non-conducting condition and wherein when the transistor switches into the non-conducting condition, energy stored in the inductor when current passes through the inductor during the conducting condition of the transistor, produces a voltage pulse to bias the diode to a conducting condition and such stored energy is dissipated in the inductor as such energy passes as current through the conducting biased diode to the voltage source.
    • 一种用于内燃机系统的清洗控制阀控制系统,包括:具有正电位和负电位的电压源; 具有螺线管的清洗控制阀,这种螺线管包括电感元件,该电感元件具有耦合到电压源的正电位的第一端子; 具有阳极和阴极的二极管。 所述控制单元包括晶体管,所述晶体管具有:由一串脉冲馈送的控制电极; 耦合到电压源的负电位的第一电极; 以及耦合到所述电感元件的第二端子和所述二极管的第二电极。 馈送到控制电极的脉冲串是脉宽调制信号,并且在导体条件之间切换晶体管,其中电流在第一电极和第二电极之间通过,导通条件和不导通条件,其中电流被阻止在 第一电极和第二电极。 当晶体管处于导通状态时,来自电压源的电流通过电感元件,并通过第一和第二电极,在二极管两端产生电位,将二极管偏压到非导通状态,并且当晶体管切换到 非导通条件,当电流在晶体管的导通条件期间通过电感器时,存储在电感器中的能量产生电压脉冲以将二极管偏压到导通条件,并且这种存储的能量在电感器中消散,因为这些能量通过 作为电流通过导通偏压二极管到电压源。
    • 29. 发明授权
    • Subsurface installation of tubing
    • 地下安装油管
    • US07524142B2
    • 2009-04-28
    • US11141801
    • 2005-05-31
    • Vern Keith Scott
    • Vern Keith Scott
    • F16L3/22
    • A01G25/06A01B13/00E02F5/101E02F5/103E02F5/145Y02A40/237
    • A tractor attachment for installing tubing beneath the ground includes a frame having a toolbar to which multiple plow assemblies are coupled and spaced apart by rigid spacers. Each plow assembly includes a plow blade and a drop feed tube, mile plow blades extend downwardly in a first direction from the toolbar and the drop feed tubes extend downwardly in a second direction from the toolbar. In operation, the multi-plow attachment is lowered such that the plow blades engage a body of soil at a desired depth. The desired depth at which the plow blades engage the soil is based at least in part on the pitch of the plow blades. The tractor moves forward to cause the plow blades to create trenches in the soil at substantially the desired depth and strands of conduit (e.g., drip irrigation tubing) are fed from the drop feed tubes to the created trenches.
    • 用于在地下安装管道的拖拉机附件包括具有工具栏的框架,多个犁组件通过工具栏联接并由刚性间隔件间隔开。 每个犁组件包括犁刀和落料进料管,英里犁刀从工具栏沿第一方向向下延伸,并且落料进料管在工具栏的第二方向向下延伸。 在操作中,多犁附件被降低,使得犁叶片以期望的深度接合土体。 犁叶片与土壤接合的期望深度至少部分地基于犁叶片的间距。 拖拉机向前移动以使得犁叶片在基本上所需的深度处在土壤中形成沟槽,并且导管的线束(例如滴灌管)从落料馈送管馈送到所产生的沟槽。