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특허 상세정보

Downhole tractor

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) E21B-017/10    B60K-001/00    F16L-001/28   
미국특허분류(USC) 166/241.1 ; 166/243 ; 180/065.5 ; 405/184
출원번호 US-0245468 (1999-02-05)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Herman
인용정보 피인용 횟수 : 132  인용 특허 : 17
초록

A downhole tractor is provided that includes a housing and a first wheel assembly coupled to the housing that is operable to translate away from the housing in a first direction. The first wheel assembly has a first electric motor, a first wheel, and a first reduction gear assembly coupled between the first electric motor and the first wheel. A second wheel assembly is coupled to the housing and is operable to translate away from the housing in a second direction that is opposite to the first direction. The second wheel assembly has a second electric mot...

대표
청구항

[ What is claimed is:] [1.]1. A downhole tractor, comprising:a housing;a first wheel assembly coupled to the housing and being operable to translate away from the housing in a first direction, the first wheel assembly having a first electric motor and a first wheel coupled to the first electric motor;a second wheel assembly coupled to the housing and being operable to translate away from the housing in a second direction that is opposite to the first direction, the second wheel assembly having a second electric motor and a second wheel coupled to the sec...

이 특허에 인용된 특허 (17)

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