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公开(公告)号：US4730835A
公开(公告)日：1988-03-15
申请号：US912253
申请日：1986-09-29
申请人： Raymond K. Wilcox , Gary L. Harris
发明人： Raymond K. Wilcox , Gary L. Harris
IPC分类号： E21B33/12 , F16J15/16 , F16J15/28 , E21B33/128
CPC分类号： F16J15/166 , E21B33/1216
摘要： A sealing assembly for effecting the sealing of an annulus between two telescopically related tubular conduits, of the type employed in subterranean wells, is achieved by utilizing annular seal backup elements dieformed from a knitted wire mesh by two successive dieforming steps. In the first dieforming, the knitted mesh backup element is formed to an external diameter equal to or preferably exceeding the maximum diameter that will be required for the backup member to assume when expanded into engagement with the outer wall of the annulus to be sealed. The second dieforming operation reduces the external diameter of the annular knitted mesh seal backup element to a dimension less than the outer wall of the annulus to be sealed, thus permitting convenient assembly and run-in of the sealing assemblage. The two step dieforming operation significantly reduces the amount of axial compressive force required to expand the sealing elements and the seal backup members to their sealed position.
摘要翻译： 通过利用通过两个连续的压制步骤从针织丝网压制的环形密封备用元件，实现了用于在地下井中使用的类型的两个可伸缩相关的管状管道之间的环空密封的密封组件。 在第一次模压成形中，针织网状支撑元件形成为等于或优选地超过当膨胀成与要密封的环空的外壁接合时支撑构件所需的最大直径的外径。 第二次成型操作将环形针织网状密封件支撑元件的外径减小到小于要密封的环形空间的外壁的尺寸，从而允许密封组合件的方便的组装和导入。 两步压模操作显着地减少了将密封元件和密封件支撑件膨胀到其密封位置所需的轴向压缩力的量。
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公开(公告)号：US5976266A
公开(公告)日：1999-11-02
申请号：US874645
申请日：1997-06-13
摘要： A mop is provided with a handle, mop strings and a plunger. The plunger is located between the handle and the mop strings. A sleeve having a top end and an open bottom end is provided, with the sleeve being perforated near the bottom end. The sleeve is tapered so that the bottom end is larger than the top end. The plunger and the mop strings are located inside of the sleeve with the plunger positioned near the top end of the sleeve and the mop strings depending from the plunger. The bottom end of the sleeve is located in a liquid so that the liquid enters a bottom portion of the sleeve through the perforations. The handle is moved down so as to compress the mop strings with the plunger, with the mop strings being immersed in the liquid, forcing dirt from the mop strings out of the sleeve perforations. The handle is moved up so as to raise the plunger inside of the sleeve and decompress the mop strings, thereby allowing the mop strings to absorb liquid from outside of the sleeve through the perforations. The steps of moving the handle up and down are repeated until the mop strings are clean.
摘要翻译： 拖把设有手柄，拖把和柱塞。 柱塞位于手柄和拖把线之间。 提供具有顶端和敞开的底端的套筒，套筒在底端附近穿孔。 套筒是锥形的，使得底端大于顶端。 柱塞和拖把串位于套筒的内部，柱塞位于套筒的顶端附近，并且拖把串从柱塞悬垂。 套筒的底端位于液体中，使得液体通过穿孔进入套筒的底部。 手柄向下移动，以便用柱塞压缩拖把绳，拖把绳浸入液体中，迫使拖把绳上的污垢从套筒穿孔中排出。 手柄向上移动，以便将套筒升高到套筒内部并减压拖把绳，从而允许拖把绳通过穿孔从套筒外部吸收液体。 重复上下移动手柄的步骤，直到拖把绳干净。
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公开(公告)号：US5826421A
公开(公告)日：1998-10-27
申请号：US837121
申请日：1997-04-14
CPC分类号： A47L13/20 , A47L13/24 , B32B5/22 , D04C1/12 , Y10S57/907
摘要： A mop head has a fitting, a coupler, and string. The fitting couples to the end of a handle. The coupler attaches the string to the fitting. The string is arranged in multiple loops that depend from the fitting. The string itself is made of a foam core and a protective filament covering. The foam is of the open cell type for absorbency and wringability. The filament is braided or knitted so as to completely encircle the core and to provide openings therethrough in order to allow access to the core. The covering protects the core from tearing and other mechanical damage, while maintaining the porosity of the overall string.
摘要翻译： 拖把头有一个配件，一个耦合器和一个字符串。 配件连接到手柄的末端。 连接器将连接器连接到配件上。 该字符串被排列成多个循环，该循环依赖于拟合。 绳子本身由泡沫芯和保护性长丝覆盖制成。 泡沫是开孔型的，用于吸收和拧紧。 丝被编织或编织，以便完全环绕芯并且提供穿过其中的开口以便允许接近芯。 覆盖物保护芯部不受撕裂和其他机械损伤，同时保持整个绳索的孔隙度。
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