[특허]Rotary drilling head

Rotary drilling head 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E21B-033/03
출원번호	US-0195633 (1980-10-09)
발명자 / 주소	Hunter Joseph M. (25 Mobile Manor Getty Ave. Indiana PA 15701)
인용정보	피인용 횟수 : 89 인용 특허 : 0

초록 ▼

A rotary drilling head for a rotary drilling apparatus including a hollow or tubular base including a discharge outlet and a lower end adapted to be mounted on a well casing, or the like, and a housing with a rotatable spindle therein insertable into the base in a sealed relationship with the spindle including a stripper rubber at the lower end thereof, and a non-metallic driving connection with the Kelly bar at the upper end and journaled internally of the housing through thrust bearing assemblies and sealed in relation thereto by a plurality of unique seal arrangements. Pressurized lubrication is communicated with a passageway defined between the housing and rotatable spindle to provide continuous pressurized lubrication by an air-oil mist. The housing is removably secured to the base by a split clamp structure to facilitate assembly and disassembly of the housing and spindle components with respect to the base.

대표청구항 ▼

A rotary drilling head comprising a tubular base adapted to be connected to a well casing, or the like, and including a lateral discharge outlet, said base including a generally vertical passage open at the upper end, a housing inserted into the upper end of said base in sealed relation thereto, means removably securing said housing in said base, a spindle mounted in said housing, bearing means rotatably supporting the spindle in said housing, sealing means interposed between the spindle and housing, means associated with the spindle and housing to supply a continuous pressure lubricating material to the interface between the spindle and housing and to the bearing means and sealing means therebetween, and means connected with the upper end portion of the spindle and adapted to be drivingly engaged by a Kelly bar extending therethrough for rotatably driving said spindle, said housing being generally cylindrical in configuration and provided with a generally centrally located inwardly extending annular flange, said bearing means including a pair of ball-type thrust bearing assemblies engaged with the upper and lower surfaces of the flange on the housing respectively, said spindle including a generally cylindrical exterior with an outwardly extending flange adjacent the lower end thereof engaged with the lower thrust bearing assembly, and a bearing retaining ring releasably mounted on the spindle engaging the upper thrust bearing assembly thereby enabling assembly of the housing, spindle and bearing assemblies.

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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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Rotary drilling head 원문보기

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Rotary drilling head 원문보기

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이 특허를 인용한 특허 (89)

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