Hydraulic turning joint

Details Hydraulic turning joint Hydraulic turning joint

1994-10-17

1996-06-25

Arola, Dave W.

Pipe joints or couplings

Pipe to discreet nipple or sleeve to plate

285190, F16L 3904

Patent

active

055293476

ABSTRACT:
Disclosed is a hydraulic turning joint which has substantially reduced longitudinal length with an equal number of oil passages therein and can reduce the mounting space in the equipment and which improves the work efficiency, accuracy and reliance of the product. The hydraulic turning joint includes a shaft, a housing for rotatably and closely accommodating the shaft, at least one oil supply passage formed in the shaft, said oil supply passage longitudinally passing through the shaft, and at least one oil discharge passage formed on the top of the the housing, said oil discharge passage being correspondingly communicated with at least one oil supply passage, wherein each of said oil supply passages are transversely communicated with each of said oil discharge passages on the same plane. The hydraulic turning joint further includes sealing means installed between the oil discharge passages within the housing.

REFERENCES:
patent: 2187147 (1940-01-01), Englesson
patent: 2768843 (1956-10-01), Zeilman
patent: 2820650 (1958-01-01), Leopold
patent: 4558890 (1985-12-01), Schartz
patent: 4928997 (1990-05-01), Reisener et al.

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