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US2506494 * Jan 9, 1948 May 2, 1950 Whitehead Brothers Rubber Comp Coupling assembly for rotary drill hoseUS2506494 * 194819 195052

2. A method of manufacture for reinforcing the inner tube of a reinforcedThe rotary drilling hose is subject to further stress in that it hangs down

2003419-This invention relates to self-supporting, selfguiding rotary oil well drilling apparatus and particularly to that type embodying two rotary

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20171121-Rotary drilling hose is used to convey drilling liquids from the top of mud standpipe to the rotary swivel. Operating pressure up to 4000psi.

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20091119-US Patent References: 1615596 Rotary well drill 1927-01-25 1587194 Self-propelling hose nozzle 1926-06-01 Home Search Services Communiti

Rotary drilling equipment -- Rotary hosesGeneral information Status : Withdrawn Publication date : 1978-04 Edition : 1 Technical Committee : ISO/TC

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This article presents a 30-year summary of the development of the rotary drilling hose in China. The key features of the various products are discussed

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