Pipe joints or couplings – With assembly means or feature – Particular tool-engaging means or with tool
Patent
1984-06-15
1985-12-10
Schwadron, Martin P.
Pipe joints or couplings
With assembly means or feature
Particular tool-engaging means or with tool
192 85A, 192 85AT, 192 85R, 285190, F16L 2708
Patent
active
045575061
ABSTRACT:
A dual-rotary union, rotational isolation adapter according to the teachings of the present invention is disclosed bridging between a rotary union in fluid communication with a source of fluid pressure and a rotation control apparatus portion rotatable with respect to a shaft. In the present invention, an adapter body is rotatably and removeably secured to the end of the shaft. In its most preferred form, the adapter body is rotatably mounted by a pin threadably received in the end of the shaft and rotatably mounted by a bearing received within a first cavity formed in the adapter body. In its most preferred form, the rotary union is received within a second cavity formed in the adapter body opposite the first cavity. Thus, the adapter body is rotatable with respect to and rotatably isolated from the source of fluid pressure by the rotary union. Additionally, the adapter body is simultaneously rotatable with respect to and rotatably isolated from the shaft by the bearing rotatably mounting the shaft securement pin. Fluid communication can then be provided between the rotational control apparatus portion and the rotary union for activating the rotational control apparatus portion. Thus, the body portion rotates with the rotational control apparatus portion and is rotatably independent from the shaft and the source of fluid pressure.
REFERENCES:
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patent: 4425993 (1984-01-01), Schilling
Dayen Leonid
Hanks James V.
Hepperle Stephen M.
Horton Manufacturing Co. Inc.
Schwadron Martin P.
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