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公开(公告)号：US4667968A
公开(公告)日：1987-05-26
申请号：US716516
申请日：1985-03-26
IPC分类号： F16J15/32
CPC分类号： F16J15/3264 , F16J15/3284
摘要： A unitized grease seal. The seal member has a one-piece metal case having a cylindrical bore-sealing portion and a radial flange, and a molded elastomeric member bonded to the metal case to provide a portion bonded to the radial flange and an outer generally cylindrical portion bonded to the surface of the bore-sealing portion and providing a series of spaced apart inwardly extending retaining portions. The elastomeric member also has two diverging lip portions with a cavity between them, one providing a grease retention lip having small spaced-apart shallow indentations enabling passage of small amounts of grease into the cavity, the other lip portion having a polytetrafluoroethylene insert bonded thereto. A one-piece metal wear sleeve member has a shaft-engaging cylindrical portion engaged by the lips and a radially outwardly extending flange with an axially inturned portion having an outer portion spaced radially inwardly from the outer generally cylindrical portion of the elastomeric member but extending radially outwardly beyond the radially inner extremities of the retaining portions. During assembly, the wear sleeve flange's inturned portion is snapped into the space between the retaining portions and the case's radial flange.
摘要翻译： 组合式润滑脂密封。 密封构件具有一体式金属壳体，其具有圆柱形孔密封部分和径向凸缘，以及模制的弹性体构件，其结合到金属壳体以提供结合到径向凸缘的部分和接合到径向凸缘的外部大致圆柱形部分 孔密封部分的表面并且提供一系列间隔开的向内延伸的保持部分。 弹性体构件还具有两个发散的唇部，在它们之间具有空腔，一个具有小的间隔开的浅凹口的润滑脂保持唇部能够将少量润滑脂通入空腔中，另一个唇部具有与其结合的聚四氟乙烯插件。 单件金属耐磨套筒构件具有与唇缘接合的轴接合的圆柱形部分和径向向外延伸的凸缘，其具有轴向折回部分，该凸缘部分具有与弹性构件的外部大致圆柱形部分径向向内间隔开的外部部分，但径向延伸 向外超过保持部分的径向内端。 在组装过程中，磨损套筒凸缘的折边部分卡入到保持部分和壳体的径向凸缘之间的空间中。
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公开(公告)号：US4907811A
公开(公告)日：1990-03-13
申请号：US372208
申请日：1989-06-26
申请人： Stephen E. Nash , Gerald P. Pichler
发明人： Stephen E. Nash , Gerald P. Pichler
CPC分类号： B25B27/0028 , F16J15/3268 , F16J15/3284 , Y10S277/944 , Y10T29/53796 , Y10T29/53909
摘要： A fluid seal made of elastomeric material for use between an external stationary member and a rotating internal member avoids use of a customary pressed steel case. The seal may be stretched over an external flange on a rotatable shaft and recover from the elongation to the designed dimension at which the seal is to operate within the external stationary member. A specially formulated elastomeric composition accommodates elongation during stretching in excess of 300%.
摘要翻译： 由外部固定构件和旋转内部构件之间使用的由弹性体材料制成的流体密封件避免使用常规压制钢壳体。 密封件可以在可旋转的轴上的外部凸缘上拉伸，并且可以从外部固定构件中的密封件的设计尺寸的伸长恢复。 特别配制的弹性体组合物适应拉伸过程中的伸长率超过300％。
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公开(公告)号：US4513976A
公开(公告)日：1985-04-30
申请号：US617699
申请日：1984-06-06
CPC分类号： F16C33/7826 , F16C33/7889 , F16J15/3228 , F16J15/3264 , F16C2326/02
摘要： A fluid seal for use between a stationary member and a rotating member. A rigid member mounted on the stationary member has a peripheral cylindrical portion joined to a peripheral frustoconical portion. A sealing assembly mounted on the rotating member has a supporting case and a radial flange. An elastomeric body is bonded to the flange and has, to one side of the flange, a radially outwardly projecting frustoconical auxiliary lip engaging the peripheral cylindrical portion. A main sealing lip, comprising an annular, flexible, polytetrafluoroethylene planar wafer, is bonded to the body on the other side of the flange from the auxiliary lip. This main lip extends radially outwardly, the wafer normally tending to assume a substantially radial position. One face of the wafer engages and is flexed by the frustoconical portion. The centrifugal force of the rotating member in either direction tends to urge the lips more snugly against the rigid member.
摘要翻译： 用于固定构件和旋转构件之间的流体密封件。 安装在固定构件上的刚性构件具有连接到周边截头圆锥形部分的周边圆柱形部分。 安装在旋转构件上的密封组件具有支撑壳体和径向凸缘。 弹性体结合到凸缘上，并且在凸缘的一侧具有与周边圆柱形部分接合的径向向外突出的截头圆锥形辅助唇缘。 包括环形柔性聚四氟乙烯平面晶片的主密封唇缘在凸缘的另一侧上与辅助唇缘接合。 该主唇缘径向向外延伸，晶片通常倾向于呈现基本上径向的位置。 晶片的一个表面接合并由截头圆锥形部分弯曲。 旋转构件在任一方向上的离心力趋向于更紧密地推动唇缘抵靠刚性构件。
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公开(公告)号：US5009434A
公开(公告)日：1991-04-23
申请号：US481280
申请日：1990-02-20
申请人： Stephen E. Nash , Gerald P. Pichler
发明人： Stephen E. Nash , Gerald P. Pichler
CPC分类号： F16J15/3284 , B25B27/0028 , F16J15/3268 , Y10T29/4987
摘要： A fluid seal made of elastomeric material for use between an external stationary member and a rotating internal member avoids use of a customary pressed steel case. The seal may be stretched over an external flange on a rotatable shaft and recover from the elongation to the designed dimension at which the seal is to operate within the external stationary member. A specially formulated elastomeric composition accommodates elongation during stretching in excess of 300%.
摘要翻译： 由外部固定构件和旋转内部构件之间使用的由弹性体材料制成的流体密封件避免使用常规压制钢壳体。 密封件可以在可旋转的轴上的外部凸缘上拉伸，并且可以从外部固定构件中的密封件的设计尺寸的伸长恢复。 特别配制的弹性体组合物适应拉伸过程中的伸长率超过300％。
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5.发明授权Rotary bidirectional dynamic shaft seal having a pumping projection with angulated primary and secondary pumping surfaces 失效旋转双向动态轴封，具有带有角度的初级和次级泵送表面的泵送突起
公开(公告)号：US4441722A
公开(公告)日：1984-04-10
申请号：US375926
申请日：1982-05-07
申请人： Gerald P. Pichler
发明人： Gerald P. Pichler
IPC分类号： F16J15/32
CPC分类号： F16J15/3244
摘要： A rotary bidirectional dynamic shaft seal (10) for maintaining a seal about a rotating shaft (12) to prevent the leakage of oil from the oil side of the seal past a sealing edge (18) to the air side. The seal (10) includes a plurality of pumping projections extending from the frustoconical surface (22) on the air side of the seal for pumping oil, which may leak past the sealing edge (18) back to the oil side of the seal. The pumping projection has a primary pumping surface (24) extending axially from the sealing edge (18) and a secondary pumping surface (28) extending at a shadow angle (A) away from the primary pumping (24) surface to a return surface (26) which extends generally radially to define the rear extremity of the pumping projection. Under normal operating conditions, the primary pumping surface (24) will return oil to the oil side of the sealing edge (18). However, should the shaft (12) be misaligned or be running eccentrically, the primary pumping surface (24) will engage the shaft on the minimum contact side whereas on the maximum contact side 180 degrees away, both the primary (24) and secondary (28) pumping surfaces will engage the shaft (12) to pump oil back to the oil side of the sealing edge (18).
摘要翻译： 一种旋转双向动力轴密封件（10），用于保持围绕旋转轴（12）的密封，以防止油从密封件的油面经由密封边缘（18）泄漏到空气侧。 密封件（10）包括从密封件的空气侧的截头圆锥形表面（22）延伸的多个泵送突起，用于泵送油，其可能经由密封边缘（18）泄漏回密封件的油侧。 泵送突起具有从密封边缘（18）轴向延伸的初级泵送表面（24）和以远离主泵送（24）表面的阴影角（A）延伸到返回表面的次级泵送表面（28） 26），其大致径向延伸以限定泵送突起的后端。 在正常操作条件下，初级泵送表面（24）将油返回到密封边缘（18）的油面。 然而，如果轴（12）不对准或偏心运动，则初级泵送表面（24）将接合在最小接触侧上的轴，而在最大接触侧180度处，初级（24）和次级（24） 泵送表面将接合轴（12）以将油泵送回密封边缘（18）的油面。
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公开(公告)号：US5363744A
公开(公告)日：1994-11-15
申请号：US163317
申请日：1993-12-07
申请人： Gerald P. Pichler
发明人： Gerald P. Pichler
CPC分类号： F16L55/04 , F16J1/008 , F16L55/0332 , B29C2045/14459
摘要： An accumulator piston is formed as a two-piece plastic molding for simplifying its construction and for cost reduction and weight reduction purposes. The piston has a radially stepped construction in which each step includes a radial flange carrying an annular elastomeric sealing element. The sealing elements have deformable, resilient lips which slidably engage the side surfaces of a stepped cylinder in which the piston reciprocates. One of the elastomeric sealing elements is molded to an annular insert member that is seated in an annular recess formed in one end of the main piston body. The two-piece piston construction facilitates installation and removal of mold cavity members relative to the respective elastomeric sealing elements such that the mold cavity members can be of simplified economical construction.
摘要翻译： 蓄能器活塞形成为两件式塑料模制件，用于简化其结构并降低成本和减轻重量。 活塞具有径向阶梯式构造，其中每个步骤包括承载环形弹性体密封元件的径向凸缘。 密封元件具有可变形的弹性唇缘，其可滑动地接合活塞往复运动的阶梯式气缸的侧表面。 弹性密封元件中的一个被模制成环形插入件，该环形插入件位于形成在主活塞主体一端的环形凹槽中。 两件式活塞结构有助于相对于相应的弹性体密封元件安装和移除模腔构件，使得模腔构件可以是简化的经济结构。
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