초록

A downhole subsurface safety valve device, where an actuator is mounted on the outside of the well on the Christmas tree and the valve is operated by a mechanical transmission which may be linear (an hydraulic actuator) or rotary (an electric motor).

대표청구항 ▼

A downhole subsurface safety valve device, where an actuator is mounted on the outside of the well on the Christmas tree and the valve is operated by a mechanical transmission which may be linear (an hydraulic actuator) or rotary (an electric motor). herein said wheel hub is supported on said spindl

A downhole subsurface safety valve device, where an actuator is mounted on the outside of the well on the Christmas tree and the valve is operated by a mechanical transmission which may be linear (an hydraulic actuator) or rotary (an electric motor). herein said wheel hub is supported on said spindle with at least one bearing wherein a portion of said vent path extends through said spindle. 10. An assembly according to claim 9 including an axle shaft coupled to said wheel end gear assembly to provide driving torque to said wheel hub wherein said axle shaft extends through a bore formed within said spindle. 11. An assembly according to claim 10 wherein said blocking member comprises a cylindrical sleeve supported by said spindle such that said axle shaft extends through said sleeve. 12. An assembly according to claim 11 wherein said sleeve includes an outer surface in engagement with a portion of said bore and an inner surface spaced apart from said axle shaft to define a gap that forms a portion of said vent path. 13. An assembly according to claim 12 wherein said sleeve extends outwardly from one end of said spindle such that a portion of said outer surface blocks fluid in said fluid path from entering said vent path. 14. As assembly according to claim 10 wherein said blocking member is integrally formed with said spindle as one piece. 15. A vehicle wheel end assembly comprising: a spindle mounted to an axle housing and including a bore extending through the length of said spindle; a hub supported on said spindle by at least one bearing for rotation relative to said spindle; an axle shaft mounted within said bore for providing driving torque to said hub; a gear assembly reacting between said hub and said axle shaft to transfer driving torque from said axle shaft to said hub; a fluid path defined within said hub for supplying a lubricating fluid to said gear assembly; a vent path defined within said hub and extending at least from said gear assembly through said bore to an outlet; and a sleeve extending outwardly from one end of said spindle to at least partially block said fluid path to reduce the amount of said lubricating fluid that enters said vent path as air is vented from said outlet. 16. An assembly according to claim 15 wherein air is vented through said outlet to said axle housing. 17. An assembly according to claim 15 wherein said sleeve includes a cylindrical body defining an inner surface and an outer surface with said cylindrical body being mounted within said bore such that said outer surface engages said bore with said axle shaft extending through said sleeve such that a gap is formed between said axle shaft and said inner surface to define a portion of said vent path. 18. An assembly according to claim 8 including a non-rotating wheel component having an inner bore that surrounds a drive member operably coupled to drive said wheel end gear assembly wherein a portion of said vent path extends through said inner bore. 19. An assembly according to claim 18 wherein said blocking member is at least partially received within said inner bore. 20. An assembly according to claim 15 wherein said sleeve cooperates with said bore to form a portion of said vent path.