公开(公告)号：US5577681A

公开(公告)日：1996-11-26

申请号：US496365

申请日：1995-06-29

申请人： Koichi Sano ,  David P. Smith ,  David D. Madsen

发明人： Koichi Sano ,  David P. Smith ,  David D. Madsen

IPC分类号： G11B15/26 ,  G11B23/087

CPC分类号： G11B23/08778 ,  G11B15/26

摘要： A pack belt or similar mechanism is provided in a two hub, belt-driven data cartridge to press against the tape pack on the take-up hub side of the cartridge when approximately half of the tape has wound onto that hub. The added load from this pressure reduces the speed of the tape-up hub, which in turn reduces the speed differential between the two hubs. Since the speed differential between the hubs causes a gradient in tape tension (bow-tie) as the tape is moved from BOT to EOT, this reduces or eliminates the bow-tie. Adjustment of the relative tensions between the drive belt and the pack belt allows adjustment of the bow-tie, ranging from the normal bow-tie, to near zero bow-tie, to a negative bow-tie. Coating one side each of the drive belt and the pack belt, then having the coated side of the drive belt contact the uncoated side of the pack belt further reduces bow-tie. Combining the pack belt with self-acting hydrodynamically lubricated guides significantly improves the efficiency of the cartridge/drive system at low tape travel speeds.

摘要翻译： 在两个轮毂皮带驱动的数据盒中设置包装带或类似的机构，当胶带的大约一半已经卷绕到该轮毂上时，压紧盒的卷取轮毂侧的带包。 来自该压力的附加负载降低了带式集线器的速度，这又降低了两个集线器之间的速度差。 由于当磁带从BOT移动到EOT时，轮毂之间的速度差会导致磁带张力（弓形）的梯度，所以这减少或消除了领结。 调整传动带和包装带之间的相对张力允许调整领带，从正常的领结到接近零的领结，到负的领结。 将驱动带和包装带的每一面涂覆，然后使驱动带的涂覆侧与包装带的未涂覆侧接触进一步减少蝴蝶结。 将包装带与自动加氢动力润滑导向器相结合，可以显着提高墨盒/驱动系统在低磁带行驶速度下的效率。

公开(公告)号：US5358193A

公开(公告)日：1994-10-25

申请号：US102533

申请日：1993-08-04

申请人： David D. Madsen ,  David P. Smith ,  Robert A. von Behren

发明人： David D. Madsen ,  David P. Smith ,  Robert A. von Behren

IPC分类号： G11B23/087

CPC分类号： G11B23/08778 ,  G11B23/08757

摘要： A belt driven reel-to-reel tape cartridge includes two tape guides for guiding the tape to and from respective tape reels. The tape guides have a large radius of curvature and are flanged to form a long trough to guide and align the tape to improve tape tracking. This also provides hydrodynamic lift by creating an air film between the tape and the tape guide to reduce the friction between the tape backside and the tape guide. The radius of curvature can be constant or can vary from a larger radius at the ends to a smaller radius in the middle.

摘要翻译： 皮带驱动的卷轴到卷轴带盒包括用于将带导向和从相应的卷轴引导的两个带引导件。 带导轨具有大的曲率半径并且被法兰形成长槽以引导和对准带以改善带跟踪。 这也通过在带和带引导件之间产生空气膜来降低胶带背面和带导向件之间的摩擦力来提供流体动力升力。 曲率半径可以是恒定的，或者可以在端部的较大半径处变化到中间较小的半径。

公开(公告)号：US5722610A

公开(公告)日：1998-03-03

申请号：US744627

申请日：1996-11-06

申请人： David P. Smith ,  Koichi Sano

发明人： David P. Smith ,  Koichi Sano

IPC分类号： G11B23/087 ,  G11B15/32

CPC分类号： G11B23/08778 ,  G11B23/08757

摘要： A belt-driven tape cartridge with reduced tape pack deformation and more spatially homogeneous tape tension. The belt driven tape cartridge has a supply side tape hub and a winding side tape hub both rotatably mounted on the base. The tape is wound around the hubs to form a tape pack about each hub. A drive roller is rotatably mounted on the base. First and second rollers are rotatably mounted on the base. The drive belt is engaged on the drive roller, the tape pack on the supply side tape hub, the first and second corner rollers, and the tape pack on the winding side tape hub. The pack belt is engaged between the first and second corner rollers and disposed on the inner side of the drive belt. The drive belt has a width less than a width of the pack belt such that tape pack deformation is reduced and the tape tension is more spatially homogeneous.

摘要翻译： 带式带盒具有减小的带包装变形和更多的空间均匀的带张力。 带驱动带盒具有可旋转地安装在基座上的供给侧带轮毂和卷绕侧带轮毂。 磁带缠绕在轮毂上，以形成围绕每个轮毂的磁带包。 驱动辊可旋转地安装在基座上。 第一和第二辊可旋转地安装在基座上。 传动皮带接合在驱动辊上，供带侧胶带上的磁带组，第一和第二角辊以及卷绕侧磁带轮毂上的磁带组。 包装带接合在第一和第二角辊之间并且设置在驱动带的内侧。 驱动带的宽度小于包装带的宽度，使得胶带包的变形减小，并且胶带张力在空间上更均匀。

公开(公告)号：US20140207390A1

公开(公告)日：2014-07-24

申请号：US14125943

申请日：2012-06-13

申请人： Shunfeng Zheng ,  David P. Smith

发明人： Shunfeng Zheng ,  David P. Smith

IPC分类号： G01N27/90

CPC分类号： G01N27/9073 ,  E21B19/22 ,  E21B47/0006 ,  G01N29/043 ,  G01N2291/0258

摘要： A system and technique for dynamically and historically evaluating useful life of coiled tubing. Methods are detailed wherein a monitor and system are equipped for enhanced evaluating of coiled tubing fatigue life based in part on the orientation of the coiled tubing during use. This may be obtained through the tracking of a seamweld of the coiled tubing. Additionally, reliability of the coiled tubing over various uses may be determined on an ongoing basis as a result of acoustically acquired data during operations. In either case, the monitor may be of a magnetic flux data detection variety.

摘要翻译： 用于动态和历史地评估连续油管的使用寿命的系统和技术。 详细描述了方法，其中装备有监视器和系统以部分地基于在使用期间连续油管的取向来增强对连续油管疲劳寿命的评估。 这可以通过跟踪连续油管的焊缝来获得。 此外，作为在操作期间声学获取的数据的结果，连续油管在各种用途上的可靠性可以在持续的基础上确定。 在任一种情况下，监视器可以是磁通量数据检测品种。

公开(公告)号：US07293579B2

公开(公告)日：2007-11-13

申请号：US10887491

申请日：2004-07-08

申请人： James A. Aardema ,  Rudy V. Mills ,  David P. Smith

发明人： James A. Aardema ,  Rudy V. Mills ,  David P. Smith

IPC分类号： F16K21/02 ,  F16K15/02

CPC分类号： F16K17/0466 ,  F16K15/026 ,  Y10T137/7846 ,  Y10T137/7847 ,  Y10T137/7938

摘要： A poppet valve arrangement is provided and has a poppet slideably disposed therein. The poppet has an odd number of integral guide legs formed thereon about the periphery of the poppet. The odd number of integral guide legs are evenly spaced from one another and are of a size sufficient to permit fluid to freely flow thereby when unseated. The integral guide legs also function to permit the poppet to freely slide, without binding, within a bore of the poppet valve arrangement. The poppet having integral guide legs is compact, versatile, cost effective to produce and has good strength.

摘要翻译： 提供提升阀装置并且具有可滑动地设置在其中的提升阀。 提升阀具有在提升阀的周边上形成的奇数数量的整体式导向杆。 奇数数量的一体式引导支腿彼此均匀间隔开，并且具有足够的尺寸，以允许流体自由流动，从而当其脱离时。 整体引导腿还用于允许提升阀在提升阀装置的孔内自由地滑动而不会结合。 具有一体式引导腿的提升阀紧凑，通用，生产成本高，强度高。

公开(公告)号：US06935114B2

公开(公告)日：2005-08-30

申请号：US10303166

申请日：2002-11-25

申请人： Thomas J. Hajek ,  David P. Smith

发明人： Thomas J. Hajek ,  David P. Smith

IPC分类号： F02N9/04 ,  F02N9/00

CPC分类号： F02N9/04

摘要： A system and method for starting an engine having a crankshaft is provided. Pressurized fluid is stored in an accumulator. A flow of pressurized fluid is released from the accumulator. The flow of pressurized fluid released from the accumulator is directed to a pump that is operatively engaged with the crankshaft of the engine. The flow of pressurized fluid drives the pump to generate a rotation of the crankshaft and thereby start the engine.

摘要翻译： 提供了一种启动具有曲轴的发动机的系统和方法。 加压流体存储在蓄能器中。 加压流体的流动从蓄能器释放。 从蓄能器释放的加压流体的流动被引导到与发动机的曲轴可操作地接合的泵。 加压流体的流动驱动泵以产生曲轴的旋转，从而启动发动机。

公开(公告)号：US06769252B2

公开(公告)日：2004-08-03

申请号：US10016531

申请日：2001-12-10

申请人： David P. Smith

发明人： David P. Smith

IPC分类号： F16D3102

CPC分类号： F15B11/0423 ,  F15B21/047 ,  F15B2211/20538 ,  F15B2211/30505 ,  F15B2211/30575 ,  F15B2211/40515 ,  F15B2211/428 ,  F15B2211/45 ,  F15B2211/50536 ,  F15B2211/615 ,  F15B2211/62 ,  F15B2211/6355 ,  F15B2211/7053 ,  F15B2211/7058 ,  F15B2211/8609

摘要： A fluid control system includes a pressure supply and a valve arrangement having an inlet and an outlet and being in fluid communication with the pressure supply. The valve arrangement includes a relief operator configured to provide fluid communication between the inlet and the outlet of the valve arrangement in response to a predetermined pressure condition at said inlet. The valve arrangement is configured to provide fluid communication between the inlet and the outlet of the valve arrangement in response to an outlet pressure being greater than an inlet pressure.

摘要翻译： 流体控制系统包括压力源和具有入口和出口并与压力源流体连通的阀门装置。 阀装置包括卸载操作器，其构造成响应于所述入口处的预定压力条件，在阀装置的入口和出口之间提供流体连通。 阀装置构造成响应于出口压力大于入口压力而在阀装置的入口和出口之间提供流体连通。

公开(公告)号：US06631653B2

公开(公告)日：2003-10-14

申请号：US09731684

申请日：2000-12-06

申请人： Chad T. Brickner ,  John R. Connolly ,  Paul Gilbert ,  Thomas J. Hajek, Jr. ,  Rudy V. Mills ,  David P. Smith

发明人： Chad T. Brickner ,  John R. Connolly ,  Paul Gilbert ,  Thomas J. Hajek, Jr. ,  Rudy V. Mills ,  David P. Smith

IPC分类号： F16H5900

CPC分类号： G05G9/04 ,  Y10T74/20159 ,  Y10T74/20201 ,  Y10T74/20396 ,  Y10T403/32041

摘要： A single lever control assembly that limits motion due to the inherent design of the assembly. In other words, no additional components are required to limit the motion of the single lever control assembly. The assembly includes two U-shaped members each having a base and parallel legs extending from the base, a lever connected to one of the U-shaped members and a pivot block interconnecting the parallel legs for allowing the U-shaped members to rotate relative to one another. The assembly has at least one of the parallel legs having a projection that engages one of the parallel legs of the other U-shaped member. In general, the single lever control assembly is a type of modified universal joint whose movement is limited by a projection.

摘要翻译： 单个杠杆控制组件，由于组件的固有设计而限制运动。 换句话说，不需要额外的部件来限制单个杆控制组件的运动。 组件包括两个U形构件，每个U形构件具有底座和从底座延伸的平行腿，连接到U形构件中的一个的杆和连接平行腿的枢轴块，以允许U形构件相对于 另一个。 组件具有平行腿中的至少一个具有接合另一个U形构件的平行腿中的一个的突起。 通常，单杠杆控制组件是一种改进的万向节，其运动受到投影的限制

公开(公告)号：US5447029A

公开(公告)日：1995-09-05

申请号：US224944

申请日：1994-04-08

申请人： William C. Swick ,  David P. Smith

发明人： William C. Swick ,  David P. Smith

IPC分类号： F15B11/02 ,  F16H61/42 ,  F16H61/427 ,  F16H61/46 ,  F16H61/47 ,  F16D39/00 ,  F16D31/02

CPC分类号： F16H61/47 ,  F16H61/42 ,  F16H61/427

摘要： Hydrostatic transmissions are useful for propelling a machine to do work and travel relative to the ground. In performing work functions and during travel it is desirable to adjust machine speed to aid in handling the machine. The subject hydrostatic transmission control system includes a infinitely adjustable creeper hand lever which can be moved to any desired position and be maintained in the selected position until moved by the operator. A spring biased inching pedal can be used in combination with the creeper lever to further adjust the machine speed. This arrangement of components provides a control system for the hydrostatic transmission which can be adjusted and maintained at a desired setting.

摘要翻译： 静液压变速器可用于推动机器相对于地面进行工作和行驶。 在执行工作功能和行驶期间，最好调整机器速度以帮助处理机器。 本液静传动控制系统包括一个无限可调的爬行手柄，可以移动到任何所需的位置，并保持在选定的位置，直到操作员移动。 弹簧偏压的踏板可以与爬行杆组合使用，以进一步调整机器速度。 这种组件的布置提供了用于静液压传动的控制系统，其可以被调节并保持在期望的设置。

公开(公告)号：US07444809B2

公开(公告)日：2008-11-04

申请号：US11341630

申请日：2006-01-30

申请人： David P. Smith ,  Daniel T. Mather

发明人： David P. Smith ,  Daniel T. Mather

IPC分类号： F16D31/02

CPC分类号： F15B21/14 ,  E02F9/2217 ,  E02F9/2292 ,  F15B11/006 ,  F15B2211/20523 ,  F15B2211/30575 ,  F15B2211/625 ,  F15B2211/7053 ,  F15B2211/88

摘要： A hydraulic system for a work machine is provided. The hydraulic regeneration system has a tank, a primary source, a first actuator, an accumulator, and a first valve mechanism. The tank is configured to hold a supply of fluid. The primary source is configured to pressurize the fluid and has a suction inlet and a discharge outlet. The first actuator is configured to receive pressurized fluid from the discharge outlet of the primary source. The accumulator is in fluid communication with the tank, the suction inlet of the primary source, and the first actuator. The first valve mechanism is disposed between the suction inlet of the primary source and the accumulator, and is movable between a first position at which fluid returning from the first actuator is directed to the suction inlet of the primary source, and a second position at which fluid returning from the first actuator is directed to only the accumulator.

摘要翻译： 提供了一种用于作业机械的液压系统。 液压再生系统具有罐，主源，第一致动器，蓄能器和第一阀机构。 罐被配置成保持流体供应。 主要来源被配置为对流体加压并具有吸入口和排出口。 第一致动器构造成从主源的排出口接收加压流体。 蓄能器与罐，主源的吸入口和第一致动器流体连通。 第一阀机构设置在主源的吸入口和蓄能器之间，并且可在第一位置和第二位置之间移动，在第一位置，第一位置和第二位置之间，第一位置使从第一致动器返回的流体被引导到主源的吸入口， 从第一致动器返回的流体仅被引导到蓄能器。