Piston assembly with reduced shuttle
    1.
    发明申请
    Piston assembly with reduced shuttle 审中-公开
    具有减少穿梭的活塞组件

    公开(公告)号:US20070158154A1

    公开(公告)日:2007-07-12

    申请号:US11330664

    申请日:2006-01-12

    CPC classification number: F16F9/3487

    Abstract: A piston assembly for a gas spring or damper includes first and second orifice plates that are axially spaced apart from each other. First and second low-friction rings are positioned between the first and second orifice plates. The first and second low-friction rings are separated from each other by a resilient member, which reacts between the first and second low-friction rings to eliminate dead-band operation as the piston assembly moves between extension and compression positions.

    Abstract translation: 用于气体弹簧或阻尼器的活塞组件包括彼此轴向间隔开的第一和第二孔板。 第一和第二低摩擦环位于第一和第二孔板之间。 第一和第二低摩擦环通过弹性构件相互分离,该弹性构件在第一和第二低摩擦环之间发生反应,以消除死区操作,因为活塞组件在伸展位置和压缩位置之间移动。

    Pneumatic spring
    2.
    发明授权
    Pneumatic spring 失效
    气动弹簧

    公开(公告)号:US5628496A

    公开(公告)日:1997-05-13

    申请号:US472501

    申请日:1995-06-07

    Inventor: James Chamberlin

    CPC classification number: F16F9/368 F16F9/0227 F16F9/3242 F16F9/3415

    Abstract: A pneumatic counterbalance spring includes a hollow cylinder defining a first internal chamber divided into a compression compartment and an extension compartment by a piston movably mounted in the chamber. The compression compartment contains pressurized gas and a seal assembly mounted on the piston prevents the gas from escaping into the extension compartmint. A piston rod is slibably mounted in the open end of the cylinder and has its inner end connected to the piston. The piston rod includes a hollow portion defining a second internal chamber which is fluidly connected to the compression compartment by a flow passage. As a result, the compression compartment has an effective volume of A+B, where A represents the volume of the compression compartment and B represents the volume of the piston rod internal chamber. This design is advantageous in applications where a low spring rate is desired and where the length of the spring needs to be minimized. A gas permeable insert may be positioned in the flow passage to provide restricted rate flow of gas through the flow passage. Alternatively, a check valve may be provided for providing restricted rate flow of gas through the flow passage during the extension stroke and a tree, by-pass flow of gas through the flow passage during the compression stroke.

    Abstract translation: 气动平衡弹簧包括中空圆柱体,其限定通过活塞可移动地安装在腔室中的分为压缩室和延伸室的第一内部腔室。 压缩室包含加压气体,并且安装在活塞上的密封组件防止气体逸出到延伸构件中。 活塞杆可滑动地安装在气缸的开口端,并且其内端连接到活塞。 活塞杆包括限定第二内室的中空部分,其通过流动通道流体连接到压缩室。 结果,压缩室具有有效体积的A + B,其中A表示压缩室的体积,B表示活塞杆内室的体积。 该设计在需要低弹簧刚度并且弹簧的长度需要最小化的应用中是有利的。 气体可渗透的插入件可以定位在流动通道中以提供气体通过流动通道的有限的速率流动。 或者,可以提供止回阀,用于在延伸行程期间提供限制的气体流过流道的流量,以及在压缩冲程期间气体通过流动通道的旁路流动。

    Pneumatic counterbalance with dual force
    3.
    发明授权
    Pneumatic counterbalance with dual force 失效
    气动平衡双重力

    公开(公告)号:US4718647A

    公开(公告)日:1988-01-12

    申请号:US936386

    申请日:1986-12-01

    Inventor: George C. Ludwig

    CPC classification number: F16F9/585 F16F9/0218

    Abstract: A pneumatic spring counterbalance extensible link including a closed end cylinder with an end connector a piston and rod assembly within the cylinder and maintained therein by the crimped over end portion of the cylinder retaining a rod bushing and rod to cylinder seal. The cylinder is pressurized prior to assembly of the complete piston and rod into the cylinder. The piston assembly includes orifice by-pass arrangements either in the piston periphery or in a piston ring, and the piston may include a fail-safe provision in the event the orifice is clogged. A crimping die assembly is used in assembling and completing final assembly of the counterbalance components while simultaneously maintaining the link in a pressurized environment, utilizing sealed arrangement between the crimping dies to maintain pressurization of the interior of the dies and the counterbalance components prior to assembly of the components. A dual force embodiment of the counterbalance unit is disclosed and utilizes a floating sealed piston below the main piston and rod assembly entrapping pre-charged gas in the space between the floating piston and the closed end of the cylinder.

    Abstract translation: 一种气动弹簧平衡可伸缩连杆,包括具有端部连接件的封闭端部气缸,活塞和杆组件位于气缸内,并通过气缸的压接端部保持在其中,将杆衬套和杆保持为气缸密封。 在将完整的活塞和杆组装到气缸中之前,气缸被加压。 活塞组件包括在活塞周边或活塞环中的孔旁通装置,并且活塞在孔口堵塞的情况下可包括故障安全装置。 压接模具组件用于组装和完成平衡部件的最终组装,同时将连接件保持在加压环境中,利用压接模具之间的密封布置,以在组装之前保持模具内部和对称部件的加压 组件。 公开了平衡单元的双重力实施例,并且利用主活塞下方的浮动密封活塞和杆组件将预充气气体包围在浮动活塞和气缸的封闭端之间的空间中。

    Two-way assist gas spring and retractable spring assembly
    4.
    发明申请
    Two-way assist gas spring and retractable spring assembly 审中-公开
    双向辅助气弹簧和伸缩弹簧组件

    公开(公告)号:US20070158124A1

    公开(公告)日:2007-07-12

    申请号:US11330272

    申请日:2006-01-11

    CPC classification number: E05F3/02

    Abstract: A gas spring and a retractable device cooperate to provide a two-way assist mechanism for controlling movement of a body panel. The retractable device includes a spring assembly received within a tube that is attached to the gas spring. The body panel is attached to a vehicle frame with a pivotal connection. One of the gas spring and retractable device is connected to the vehicle frame and the other of the gas spring and retractable device is connected to the body panel. The retractable device acts as a solid link as the body panel moves from a closed position towards an open position. Once a center of gravity of the body panel rotates beyond the pivotal connection, the retractable device resists further movement of the body panel until a fully open position is achieved.

    Abstract translation: 气弹簧和伸缩装置配合以提供用于控制车体面板的运动的双向辅助机构。 可伸缩装置包括容纳在管内的弹簧组件,其连接到气体弹簧。 车身面板以枢转连接的方式连接到车架上。 气体弹簧和可伸缩装置中的一个连接到车架,气弹簧和可伸缩装置中的另一个连接到车身面板。 随着身体板从关闭位置朝向打开位置移动,可伸缩装置用作实心连杆。 一旦身体面板的重心旋转超过枢转连接,可伸缩装置抵抗身体面板的进一步移动,直到达到完全打开位置。

    Seal for gas springs and the like
    5.
    发明授权
    Seal for gas springs and the like 失效
    气弹簧等的密封

    公开(公告)号:US5921556A

    公开(公告)日:1999-07-13

    申请号:US730225

    申请日:1996-10-15

    CPC classification number: F16F9/362 F16F9/0218 F16F9/36 F16J15/3236 F16J15/56

    Abstract: A seal that is particularly suitable for use in a gas spring and other high pressure hydraulic and pneumatic sealing applications and that minimizes the leakage of relatively high pressure gas and lubricating oil from the rod end of the gas spring or the other applications. The generally annular seal body includes radially inwardly and outwardly facing surfaces and non-concave axial facing surfaces. Lobes for sealing, wiping and directing enhanced forces project radially beyond the planes of the radially inwardly and outwardly facing surfaces. The seal also includes a wiper insert that has a parabolic shaped radially outwardly facing surface and a radially inwardly facing surface, and that is secured in a recess adjacent to the front corner of the seal body's radially inwardly facing surface. When the seal body is compressed for use, the compression induced stresses in the seal body result in the formation of an effective gas and oil seal because, in part, one of the corners of the insert's radially inwardly facing surface is forced against the adjacent surface of the piston rod.

    Abstract translation: 一种特别适用于气弹簧和其他高压液压和气动密封应用的密封件,其最大限度地减少了来自气弹簧或其它应用的杆端的相对高压气体和润滑油的泄漏。 大致环形的密封体包括径向向内和向外的表面和非凹入的轴向面对表面。 用于密封,擦拭和引导增强力的凸耳径向伸出超出径向向内和向外表面的平面。 密封件还包括具有抛物面形状的径向向外表面和径向向内表面的擦拭器插入件,并且其固定在邻近密封体径向向内表面的前角的凹部中。 当密封体被压缩使用时,密封体中的压缩引起的应力导致形成有效的气体和油封,因为部分地,插入件径向向内的表面的角部之一被迫抵靠相邻的表面 的活塞杆。

    Bi-directional damper with a self-centering mechanism
    6.
    发明授权
    Bi-directional damper with a self-centering mechanism 失效
    具有自定心机构的双向阻尼器

    公开(公告)号:US5896959A

    公开(公告)日:1999-04-27

    申请号:US816360

    申请日:1997-03-13

    CPC classification number: F16F9/18 F16F9/06

    Abstract: A self centering, bi-directional, non-cavitating damper that includes a cylindrical damper body and a piston assembly having a piston reciprocally movable in the damper body and a piston rod connected and movable with the piston. A tube is connected with the piston rod and is spaced about and radially from the damper body so that the tube and damper body may move axially, relative to each other, but are normally positioned in centered positions with respect to each other. First and second plastic washers are positioned between the damper body and the tube. At least one coil compression spring is positioned between the damper body and the tube and biases the washers apart axially to their normal positions. Each washer is prevented from moving apart beyond its normal position, but is movable toward the other washer, against the bias of the spring, when relative movement, from their normal positions, occurs between the damper body and the tube.

    Abstract translation: 一种自定心的双向非空气阻尼器,包括圆柱形阻尼器主体和活塞组件,该活塞组件具有可在阻尼器本体中往复运动的活塞和活塞杆,活塞杆可与活塞连接并移动。 管与活塞杆连接并且与阻尼器主体间隔开并径向离开,使得管和阻尼器主体可以相对于彼此轴向移动,但是通常位于相对于彼此的居中位置。 第一和第二塑料垫圈位于阻尼器主体和管之间。 至少一个线圈压缩弹簧位于阻尼器主体和管之间,并将垫圈沿轴向偏压到其正常位置。 每个垫圈被阻止超出其正常位置移动,但是当相对运动从其正常位置发生在阻尼器主体和管之间时,可抵抗弹簧的偏压朝着另一个垫圈移动。

    Counterbalance apparatus with transverse pneumatic spring and bellcrank
linkage
    8.
    发明授权
    Counterbalance apparatus with transverse pneumatic spring and bellcrank linkage 失效
    具有横向气动弹簧和曲拐连杆的平衡装置

    公开(公告)号:US4788747A

    公开(公告)日:1988-12-06

    申请号:US946203

    申请日:1986-12-19

    Inventor: George C. Ludwig

    Abstract: A transversely mounted, single pneumatic spring, and dual bell crank and idler link assembly providing a compact counterbalance for hinged closures such as automobile trunk lids. In an automobile trunk installation, the assembly is installed with the spring in lateral disposition in the forward upper portion of the trunk, thus being effectively concealed. Alternative pneumatic spring enhancements, e.g., a multi-output force feature and a pressure decay compensation feature may be incorporated in the spring unit to enhance opening of the lid and to improve life expectancy of the pneumatic spring by minimizing and effectively negating pressure loss due to leakage of gas past the shaft seal. Excess spring cylinder length can provide space or volume zones used for the enhancement features. Structure which provides a multiple output force for the pneumatic spring, utilizes positioning of the spring shaft end bushing and seal to vary the working volume by changing effective cross-section area of the piston shaft near the end of a compression stroke. The extra cylinder length enables a sealed partition wall to separate extra volume and the operative volume part of the cylinder. The extra volume is filled with a supply of gas under higher pressure than that of the spring operative gas pressure and, in conjunction with permeability characterisitcs of the spring shaft seal and the partition wall seal, enables compensation for leakage from the cylinder. Multiple force output provisions can be used in a substantially vertically disposed spring, filled with a predetermined quantity of oil, and used as a liquid-pneumatic shock absorber. A supplemental orifice type disc valve unit can be used in such a shock absorber, located near the closed end of the spring cylinder.

    Abstract translation: 横向安装的单个气动弹簧和双钟形曲柄和惰轮连杆组件,为铰链封闭件(如汽车行李箱盖)提供紧凑的平衡。 在汽车后备箱的安装中,组件以横向配置的方式安装在主干的前部上部,从而被有效地隐藏。 可以在弹簧单元中引入替代的气动弹簧增强功能,例如多输出力特征和压力衰减补偿特征,以增强盖的打开,并通过最小化并有效地消除由于 气体泄漏通过轴封。 弹簧筒体长度过长可以提供用于增强功能的空间或体积区域。 为气动弹簧提供多重输出力的结构利用弹簧轴端衬套和密封件的定位,通过在压缩行程结束附近改变活塞轴的有效横截面面积来改变工作体积。 额外的气缸长度使得密封的分隔壁能够分离额外的体积和气缸的操作体积部分。 额外的体积填充有比弹簧工作气体压力高的压力气体供应,并且结合弹簧轴密封件和分隔壁密封件的渗透特性,能够补偿气缸的泄漏。 多个力输出装置可用于基本垂直布置的弹簧中,填充有预定量的油,并用作液体 - 气动减震器。 补充孔型盘式阀单元可用于位于弹簧缸封闭端附近的这种减震器中。

    Seal for gas springs and the like
    9.
    发明授权
    Seal for gas springs and the like 失效
    气弹簧等的密封

    公开(公告)号:US5921557A

    公开(公告)日:1999-07-13

    申请号:US720954

    申请日:1996-10-04

    CPC classification number: F16F9/362 F16F9/0218 F16J15/56

    Abstract: A seal that is particularly suitable for use in a gas spring and other high pressure hydraulic and pneumatic sealing applications and that minimizes the leakage of relatively high pressure gas and lubricating oil from the rod end of the gas spring or other application. The generally annular seal body includes a number of convex sealing lobes on its radially inwardly and outwardly facing surfaces. All of the sealing lobes have a predetermined radius and project radially beyond the plane of their respective surfaces. The axial facing surfaces of the seal body are generally flat or non-concave. The seal also includes a wiper insert secured in a recess in one corner of the radially inwardly facing surface of the seal body. When the seal body is compressed between the relatively movable, annularly spaced piston rod and cylinder of a gas spring or application, the compression induced stress in the seal causes the seal body and insert to form an effective gas and oil seal.

    Abstract translation: 一种特别适用于气弹簧和其他高压液压和气动密封应用的密封件,其最小化来自气弹簧或其他应用的杆端的相对高压气体和润滑油的泄漏。 大致环形的密封体在其径向向内和向外的表面上包括多个凸形的密封凸角。 所有密封凸起具有预定的半径并且径向突出超出它们各自表面的平面。 密封体的轴向面是大致平坦的或非凹形的。 密封件还包括固定在密封体的径向向内的表面的一个角部的凹部中的擦拭器插入件。 当密封体在相对移动的,环形间隔的活塞杆和气体弹簧或应用的气缸之间被压缩时,密封件中的压缩诱发应力使得密封体和插入件形成有效的气体和油封。

    Seal for gas springs and the like
    10.
    发明授权
    Seal for gas springs and the like 失效
    气弹簧等的密封

    公开(公告)号:US5895053A

    公开(公告)日:1999-04-20

    申请号:US726124

    申请日:1996-10-04

    CPC classification number: F16F9/362 F16F9/0218 F16J15/56

    Abstract: A seal that is particularly suitable for use in a gas spring and other high pressure hydraulic and pneumatic sealing applications and that minimizes the leakage of relatively high pressure gas and lubricating oil from the rod end of the gas spring or other applications. The generally annular seal body includes a number of convex sealing lobes on its radially inwardly and outwardly facing surfaces. All of the sealing lobes have a predetermined radius and project radially beyond the plane of their respective surfaces. The axial facing surfaces of the seal body are generally flat or non-concave. The seal also includes a wiper insert secured in a recess in one corner of the radially inwardly facing surface of the seal body. When the seal body is compressed between the relatively movable, annularly spaced piston rod and cylinder, the compression induced stress in the seal causes the seal body and insert to form an effective gas and oil seal.

    Abstract translation: 特别适用于气弹簧和其他高压液压和气动密封应用中的密封件,并且使气体弹簧或其他应用的杆端的相对高压气体和润滑油的泄漏最小化。 大致环形的密封体在其径向向内和向外的表面上包括多个凸形的密封凸角。 所有密封凸起具有预定的半径并且径向突出超出它们各自表面的平面。 密封体的轴向面是大致平坦的或非凹形的。 密封件还包括固定在密封体的径向向内的表面的一个角部的凹部中的擦拭器插入件。 当密封体在相对移动的,环形间隔开的活塞杆和气缸之间被压缩时,密封件中的压缩引起的应力使得密封体和插入件形成有效的气体和油封。

Patent Agency Ranking