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1. 发明申请

US20030227139A1 Seal for a reciprocating plunger 有权
标题翻译：往复式活塞的密封
公开(公告)号：US20030227139A1
公开(公告)日：2003-12-11
申请号：US10161625
申请日：2002-06-05
发明人： Gregory S. Antoun
IPC分类号： F16J009/06
CPC分类号： F16J15/186 , F04B53/164 , F16J15/185 , F16J15/48 , F16J15/56
摘要： A seal for a reciprocating plunger is formed of a hard polyimide plastic, rather than the relatively soft elastomers of earlier seals. The present seal has a conical section, with the tapered face fitting closely within the mating conical face of a hard metal retainer. An O-ring resides in a groove within the seal to provide low pressure sealing between the plastic seal and the metal retainer. The tapers of the seal and retainer urge the seal inwardly toward the plunger by operational pressures, thereby providing a better seal. The present seal provides greatly extended life over softer prior art seals, and will generally last for the life of the pump or other mechanism in which it is installed. Yet, the plastic material allows some flow under high pressures, allowing the seal to conform closely to the plunger surface during operation and throughout the life of the seal.
摘要翻译：用于往复式柱塞的密封件由硬质聚酰亚胺塑料形成，而不是较早密封件的相对柔软的弹性体。本密封件具有锥形部分，锥形面紧密地配合在硬金属保持器的配合圆锥面内。 O形圈位于密封件内的凹槽中，以在塑料密封件和金属保持器之间提供低压密封。密封件和保持器的锥度通过操作压力迫使密封件朝向柱塞向内，从而提供更好的密封。本密封件比较软的现有技术的密封件提供了大大延长的使用寿命，并且通常将持续泵或其中安装其的机构的寿命。然而，塑料材料允许在高压下一些流动，允许密封件在操作期间和密封件的整个寿命期间与柱塞表面紧密地吻合。

2. 发明申请

US20030011137A1 Seals for internal combustion engines 审中-公开
公开(公告)号：US20030011137A1
公开(公告)日：2003-01-16
申请号：US10237350
申请日：2002-09-09
发明人： G. Douglas Dubose
IPC分类号： F16J009/06 , F16J015/16
CPC分类号： F16J9/20 , F16J9/063 , F16J9/064
摘要： A seal configuration for both reciprocating pistons and for rotating valves of internal combustion engines. A first embodiment, applicable to reciprocating pistons, provides minimum crevice volume (MCV). The MCV seal assembly according to the present invention, which replaces, at least, a conventional top piston ring and its annular groove, includes an annular groove in the piston, a wavy spring at the bottom of the annular groove and an MCV seal received in the annular groove and biased outwardly by the wavy spring, wherein the MCV seal assembly is configured and oriented so as to minimize the crevice volume above the MCV seal, wherein the spring biasing ensures an excellent sealing of the MCV seal to the cylinder wall. A second embodiment, applicable to rotary valves, particularly a variable orbital aperture (VOA) valve system, a plurality of VOA seal assemblies are provided, each including a groove, a wavy spring at the bottom of the groove and a VOA seal received in the groove and biased outwardly by the wavy spring so as to seal the orbiter relative to at least one of the upper head, lower head and the one or more floaters, and the seal the at least one floater relative to at least one of the upper head, the lower head and the orbiter. Each MCV seal and VOA seal is preferably coated with a low friction, high endurance coating, as for example metal oxides applied by a plasma gun.

3. 发明申请

US20020079649A1 Compact actuator with hydraulic seal 失效
标题翻译：紧凑型执行器带液压密封
公开(公告)号：US20020079649A1
公开(公告)日：2002-06-27
申请号：US09748990
申请日：2000-12-27
发明人： Gregory Waston Terpay , George Gustave Zipfel
IPC分类号： F16J009/06 , F16J009/08
CPC分类号： F16J9/08 , B64C27/001 , B64C2027/002 , F16F9/368 , F16J9/063 , Y10S277/909
摘要： An actuator for use in an active mount system for reducing vibration transmission from a vibrating component to a support structure. The actuator is disposed in a housing that is attached to the vibrating component or the support structure. The actuator includes a piston moveably disposed in a casing, and a piston rod assembly that is connected to the other one of the vibrating component or the support structure. A seal assembly, disposed either in a groove in the piston or in a groove in the casing, provides a seal between the piston and casing. The seal assembly includes an annular seal member comprising polytetrafluoroethylene resin, backing rings on each side of the seal member, and an annular compression spring in the groove between one of the backing rings and one edge of the groove. The spring exerts force axially to compress the seal member, impelling the seal member to increase in dimension radially and maintain the seal between the piston and casing, and allows for volume expansion of the seal member with temperature. The piston may be barrel-shaped for use in a casing with a cylindrical interior surface, or the inner surface of the casing may define an hourglass-shape for use with a cylindrical piston. Both designs allow the actuator to accommodate transverse loads without binding of the piston within the casing.
摘要翻译：一种用于主动安装系统的致动器，用于减少从振动部件到支撑结构的振动传递。致动器设置在附接到振动部件或支撑结构的壳体中。致动器包括可移动地设置在壳体中的活塞和连接到振动部件或支撑结构中的另一个的活塞杆组件。密封组件设置在活塞的凹槽中或壳体中的凹槽中，在活塞和壳体之间提供密封。密封组件包括环形密封构件，其包括聚四氟乙烯树脂，密封构件的每一侧上的背衬环，以及环形压缩弹簧，位于一个背衬环和凹槽的一个边缘之间的凹槽中。弹簧轴向施力以压缩密封构件，推动密封构件径向增大并保持活塞与壳体之间的密封，并允许密封构件随温度的体积膨胀。活塞可以是桶形的，用于具有圆柱形内表面的壳体中，或者壳体的内表面可以限定与圆柱形活塞一起使用的沙漏形状。两种设计允许致动器适应横向载荷，而不会使活塞在壳体内的结合。

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