[특허]Short stack bearing assembly

Short stack bearing assembly 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E21B-004/02 F16C-019/10
출원번호	US-0835595 (1992-02-14)
발명자 / 주소	Livingston Raymond S. (Nisku CAX) Kutinsky David P. (Nisku CAX)
출원인 / 주소	Canadian Downhole Drill Systems, Inc. (Nisku CAX 03)
인용정보	피인용 횟수 : 36 인용 특허 : 0

초록 ▼

A mud motor bearing assembly is disclosed for an oil-lubricated downhole drill mud motor. A number of parallel sets of angular contact ball bearings are located between the mandrel and the bearing housing in a sealed, oil-filled chamber to provide all compressive thrust load bearing, extension thrust load bearing and radial load bearing capacity. Oil filled pistons at each end retard the progress of mud contamination into the inside of the chamber containing the ball bearings.

대표청구항 ▼

An oil lubricated bearing assembly for a downhole mud motor comprising: (a) a hollow cylindrical housing having an upper end and a lower end, (b) a hollow cylindrical mandrel rotatably located in the housing; (c) upper and lower shoulder means on the inside of the housing, and on the outside of the mandrel; (d) two or ore angular contact ball bearing means arranged adjacent each other between the mandrel and the housing along the axis of the housing and mandrel, each bearing means having ball bearings carried in inner and outer races arranged around the mandrel at least two of said ball bearing means having at least one face on each of said inner and outer races in abutting contact with adjacent faces on the inner and outer races of an adjacent ball bearing means; and the inner races being retained between the shoulder means on the mandrel and the outer races between the shoulder means on the housing; (e) upper seal means between the mandrel and housing located between said upper end of the housing and said upper shoulder means; (f) lower seal means between the mandrel and housing located between said lower end of the housing and said lower shoulder means; (g) means for introducing and retaining lubrication within the housing means between the upper seal means and the lower seal means; and (h) wherein the upper and lower races of the respective ball bearing means are oriented such that at least one ball bearing means is arranged as a compression load bearing means and at least one ball bearing means is arranged as extension load bearing means.

이 특허를 인용한 특허 (36)

Wingett, Paul T.; Potter, Calvin C.; Bristol, Brent L.; Hanlon, Casey; Geck, Kellan; Gaines, Louie T., Ballscrew with an integral high-efficiency thrust bearing.
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Wenzel, Kenneth H., Bearing assembly.
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Pheasey, Frederick William, Bearing assembly for a downhole motor.
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Cioceanu,Nicu, Bearing assembly for downhole mud motor.
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Wenzel, Kenneth H., Bearing assembly for use in earth drilling.
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Nicu Valentin Cioceanu CA; Troy Douglas Lorenson CA; George Murry Ward CA, Bearing assembly for wellbore drilling.
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Thompson,Stephen, Bearing with pass or fail wear gauge.
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Cioceanu, Nicu, Bent bearing assembly for downhole mud motor.
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Kerstetter, Scott, Combination mud motor flow diverter and tiled bearing, and bearing assemblies including same.
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Blair, Paris E.; Ficken, Joseph L.; Richards, Daniel J., Downhole mud motor.
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Blair, Paris E.; Ficken, Joseph L.; Richards, Daniel J., Downhole mud motor.
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Ficken, Joe, Downhole mud motor with a sealed bearing pack.
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Beshoory Edward Joseph, Downhole oil-sealed bearing pack assembly.
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Beshoory Edward Joseph (Houston TX) Murray William David (Houston TX), Downhole tool bearing assembly.
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Villarreal, Gilbert; Young, Allen Richard, Drill motor enhancement providing improved sealing performance and longevity.
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Konde, Parag; Likki, Srinivas; Larsen, James Layne; Terracina, Dwayne P.; Grebe, Andrew, Flow control through thrust bearing assembly.
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Delgado Marquez, Adolfo; Van Dam, Jeremy Daniel; Sakamoto, Stephen Masao; Garcia, Rene Jose, Load-limiting thrust bearing system and an associated method thereof.
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von Gynz-Rekowski Gunther ; Le Tuong T., Lubricant circulation system for downhole bearing assembly.
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Wenzel, William R., Method of adjusting backlash in a down hole bearing assembly.
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Watson, Brock; Kliewer, Gregory; Schultz, Roger L., Method of using a mud motor.
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Watson, Brock; Kliewer, Gregory; Schultz, Roger L., Mud motor.
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Watson, Brock; Kliewer, Gregory; Schultz, Roger L., Mud motor.
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Watson, Brock; Kliewer, Gregory; Schultz, Roger L., Mud motor.
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Watson, Brock; Kliewer, Gregory; Schultz, Roger L., Mud motor.
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Von Gynz-Rekowski, Gunther HH; Herben, William C.; Bolejack, Daryl E., Mud motor bearing assembly and method.
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Knull, Craig; Forbes, Justin, Mud motor with integrated percussion tool and drill bit.
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Marchand, Nicholas Ryan; Prill, Jonathan Ryan, Mud-lubricated bearing assembly with mechanical seal.
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Marchand, Nicholas Ryan; Prill, Jonathan Ryan, Mud-lubricated bearing assembly with mechanical seal.
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Wall, Kevin W.; Nicely, Jeremy S., Power transmission line section.
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Marchand, Nicholas, Pressure compensation system for a motor bearing assembly.
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Marchand, Nicholas, Pressure compensation system for an oil-sealed mud motor bearing assembly.
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Prill, Jonathan Ryan; Pheasey, Frederick, Sealing system and bi-directional thrust bearing arrangement for a downhole motor.
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Ide, Russell D.; Ide, Russell C., Thrust bearing assembly.
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Ide, Russell Douglas, Thrust bearing assembly.
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Ide, Russell Douglas, Thrust bearing assembly.
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Ide,Russell Douglas, Thrust bearing assembly.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Short stack bearing assembly 원문보기

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이 특허를 인용한 특허 (36)

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