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公开(公告)号：US5009826A
公开(公告)日：1991-04-23
申请号：US345914
申请日：1989-05-01
申请人： John H. Walker
发明人： John H. Walker
IPC分类号： E21B17/16
CPC分类号： E21B17/16
摘要： A method of molding thermoplastic material into a collar for use on a drill string is disclosed. Initially a precursor is constructed by rolling a sheet of thermoplastic material, containing long reinforcement fibers, into a tubular "roll" and placing the roll in a generally cylindrical open mold so as to align longitudinal axes of the roll and the open mold. A cylindrical mold core, which mates with the open mold to form a mold cavity, has an end piece perpendicular to the cylindrical portion for closing the mold. The mold core is forced, with correct alignment, into the open mold using high pressure which closes the mold and causes the thermoplastic material, containing long reinforcement fibers, to take the required shape. The thus formed part is cooled and ejected from the mold for use as the precursor. Final steps include machining the ends of the precursor to produce the desired collar.
摘要翻译： 公开了一种将热塑性材料模制成用于钻柱的套环的方法。 最初，通过将含有长增强纤维的热塑性材料片材轧制成管状“辊”并将辊放置在大致圆柱形的开放模具中以使辊和开模的纵轴线对齐来构造前体。 与打开的模具配合以形成模腔的圆柱形模芯具有垂直于圆柱形部分的端件，用于封闭模具。 使用高压关闭模具并使包含长增强纤维的热塑性材料具有所需形状，将模芯以正确的对准方式强制进入开模。 如此形成的部件被冷却并从模具中喷出以用作前体。 最终步骤包括加工前体的端部以产生所需的套环。
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公开(公告)号：US4832137A
公开(公告)日：1989-05-23
申请号：US090287
申请日：1987-08-28
申请人： John H. Walker
发明人： John H. Walker
IPC分类号： E21B17/16
CPC分类号： E21B17/16
摘要： An improved method for protecting a drill pipe casing from a rotatable string of drill pipe longitudinally extended therethrough. The method involves positioning a collar structure circumferentially around the upper end of one pipe section which is internally threaded and then thereafter engaging therewith the lower end of a second pipe section which is externally threaded and engageable with said first pipe section. The collar structure is formed of a poly(arylene sulfide) and is a single unitary structure having circumferentially extended outer surfaces which are adapted to resist spinning with the drill pipe string positioned in the casing structure.
摘要翻译： 一种用于保护钻杆套管从纵向延伸穿过的钻杆的可旋转钻柱的改进方法。 该方法包括将环形结构周向地定位在内螺纹的一个管段的上端周围，然后与其中与第二管段的下端接合，第二管段的外螺纹并与所述第一管段接合。 套环结构由聚（亚芳基硫化物）形成，并且是具有周向延伸的外表面的单一整体结构，其适于抵抗位于壳体结构中的钻杆串的纺丝。
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公开(公告)号：US4212428A
公开(公告)日：1980-07-15
申请号：US893801
申请日：1978-04-05
申请人： John H. Walker
发明人： John H. Walker
CPC分类号： B05B9/06 , A01C17/005 , E01C19/203
摘要： A trailer-type vehicle for transporting and dispensing solid materials over the ground includes a self-contained, hydraulic power and control system driven by one of the vehicle's ground engaging wheels which operates a first dispensing mechanism at a selectable speed proportional to the vehicle's rate of travel over the ground, but operates a second dispensing mechanism at a constant speed regardless of the vehicle's rate of travel. A single hydraulic motor driven by a selectively engageable drive train connected with one of the vehicle's wheels is novelly employed as a hydraulic pump for delivering a force transmitting fluid through a pair of control valves to a pair of hydraulic motors respectively powering the dispensing mechanisms. One of the control valves includes provision for selectively adjusting the flow rate to the associated hydraulic motor thereby allowing adjustment of the volume of material being dispensed per area of ground covered by the vehicle.
摘要翻译： 用于在地面上运输和分配固体材料的拖车式车辆包括由车辆的地面接合轮驱动的独立的液压动力和控制系统，其以与车辆的速度成比例的可选择速度操作第一分配机构 行驶在地面上，而不管车辆的行驶速度如何，以恒定的速度运行第二个分配机构。 由与车辆车轮之一连接的可选择性接合的传动系统驱动的单个液压马达新颖地用作液压泵，用于将力传递流体通过一对控制阀传递到分别为分配机构供电的一对液压马达。 控制阀中的一个包括用于选择性地调节到相关联的液压马达的流量的设置，从而允许调整每个被车辆覆盖的地面区域分配的材料的体积。
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4.发明授权Lightweight back-pack generator set having a spark-ignited engine operating on middle distillate fuels 失效具有在中间馏分燃料上运行的火花点火发动机的轻型背包发电机组
公开(公告)号：US5555853A
公开(公告)日：1996-09-17
申请号：US219096
申请日：1994-03-29
申请人： Douglas M. Bowen , Clint D. Gray , Douglas E. Campbell , David Collier , Steven L. Hickman , Norman J. Hole , Norman J. Kessens , Gary D. Webster , John H. Walker , Daniel L. Walters
发明人： Douglas M. Bowen , Clint D. Gray , Douglas E. Campbell , David Collier , Steven L. Hickman , Norman J. Hole , Norman J. Kessens , Gary D. Webster , John H. Walker , Daniel L. Walters
CPC分类号： F02B75/16 , F02B63/04 , F02B1/04 , F02B2063/045 , F02B63/048 , F05C2201/021
摘要： A lightweight back-pack generator set having a spark-ignited engine operating on middle distillate fuels (e.g., JP-5, JP-8 and F-34) has been provided. The generator set includes a back-pack frame; an alternator; and a spark-ignited combustion engine adapted to operate on a middle distillate fuel. The engine uses a preheater for heating the intake manifold to facilitate start-up operation of the engine. The present invention also provides a simple and inexpensive method for converting a spark-ignited gasoline engine to operate on a middle distillate fuel for providing a lightweight engine suitable for driving an alternator, a portable generator, or other portable equipment.
摘要翻译： 已经提供了一种具有在中间馏分燃料（例如JP-5，JP-8和F-34）上操作的火花点火发动机的轻质背包式发电机组。 发电机组包括背包框架; 交流发电机 以及适于在中间馏分燃料上操作的火花点燃的内燃机。 发动机使用预热器来加热进气歧管以便于发动机的启动操作。 本发明还提供了一种用于将火花点火的汽油发动机转化为在中间馏出燃料上操作的简单和便宜的方法，用于提供适于驱动交流发电机，便携式发电机或其它便携式设备的轻型发动机。
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公开(公告)号：US4708203A
公开(公告)日：1987-11-24
申请号：US868409
申请日：1986-05-29
申请人： John H. Walker
发明人： John H. Walker
CPC分类号： E21B17/16
摘要： A drill collar is formed from a composite material to protect equipment during drilling operations as in oil and gas exploration.
摘要翻译： 钻铤由复合材料形成，以在钻井操作中保护设备，如在油气勘探中。
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公开(公告)号：US4544701A
公开(公告)日：1985-10-01
申请号：US594046
申请日：1984-03-28
申请人： John H. Walker , Harold V. Wood
发明人： John H. Walker , Harold V. Wood
CPC分类号： C08J5/044 , C08K7/02 , C08J2381/02
摘要： A pair of substantially identical half-sections adapted to be wedged around a rod in locked position with the half-sections stamp molded from a prepreg formed by surrounding at least one fiber mat of inorganic reinforcing material with a matrix of PPS to produce a prepreg containing from about 15 to about 45 weight percent of the inorganic reinforcing material.
摘要翻译： 一对基本上相同的半部分适于围绕杆锁定在锁定位置，半部分通过用PPS基体包围无机增强材料的至少一个纤维垫而形成的预浸料坯模压成型，以制备含有 约15至约45重量％的无机增强材料。
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公开(公告)号：US4009295A
公开(公告)日：1977-02-22
申请号：US546818
申请日：1975-02-03
申请人： John H. Walker
发明人： John H. Walker
CPC分类号： C08L53/02
摘要： A resinous block copolymer having an anti-blocking agent incorporated therein, which copolymer is made printable by the incorporation of a small amount of an olefin polymer.
摘要翻译： 在其中引入防粘连剂的树脂嵌段共聚物，该共聚物可通过加入少量烯烃聚合物而印刷。
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公开(公告)号：US4132081A
公开(公告)日：1979-01-02
申请号：US775995
申请日：1977-03-09
申请人： John H. Walker , James A. Sutton
发明人： John H. Walker , James A. Sutton
CPC分类号： E21D23/0427 , E21D23/0034
摘要： A mine roof support comprising a floor-engageable member, a roof-engageable member such as a canopy extending forwardly of the floor-engaging member, a first extensible leg secured between the floor-engaging member and the canopy, a linkage, which may include a shield, mounted on the floor-engaging member and pivotally connected to the roof-engageable member at its rear end and a second extensible leg secured between the floor-engaging member and the linkage. The linkage is preferably operative to constrain its pivotal connection to the canopy to move upward and downward in a fixed path relative to the floor-engaging member.
摘要翻译： 一种矿顶支撑件，其包括可接地构件，可顶板接合构件，例如从地板接合构件向前延伸的顶盖，固定在地板接合构件和顶盖之间的第一可伸缩腿，连杆，其可包括 屏蔽件，安装在地板接合构件上，并在其后端枢转地连接到屋顶可接合构件，以及固定在地板接合构件和连杆之间的第二可伸展腿。 优选地，联动装置用于限制其与顶盖的枢转连接，以相对于地板接合构件在固定路径中上下移动。
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公开(公告)号：US4126002A
公开(公告)日：1978-11-21
申请号：US765856
申请日：1977-02-04
申请人： John H. Walker , James A. Sutton
发明人： John H. Walker , James A. Sutton
CPC分类号： E21D23/03 , E21D23/0034
摘要： A mine roof support comprising a floor-engaging member, one or more shielding members above the floor-engaging member, a flap pivotally mounted on the or on a shielding member and a sealing member pivotally mounted on the flap.
摘要翻译： 一种矿顶支撑件，包括地板接合构件，在地板接合构件上方的一个或多个屏蔽构件，可枢转地安装在屏蔽构件上或其上的挡板和可枢转地安装在挡板上的密封构件。
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