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A diverter apparatus (15) comprises a tubular housing (70) defining at least one flow port (92) defined therethrough communicated with a central opening flow passage (94) of said housing (70); a closing sleeve (102) disposed about said tubular housing (70) being moveable relative to said housing (70...

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Bibliographische Detailangaben
Hauptverfasser:	DUKE, WESLEY G, ROGERS, HENRY E, STEWART, TOMMY T, HALLMAN, MILLARD
Format:	Patent
Sprache:	nor
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Beschreibung
Zusammenfassung:	A diverter apparatus (15) comprises a tubular housing (70) defining at least one flow port (92) defined therethrough communicated with a central opening flow passage (94) of said housing (70); a closing sleeve (102) disposed about said tubular housing (70) being moveable relative to said housing (70) between a closed position (60) wherein said closing sleeve (102) covers said at least one flow port (92) to prevent flow therethrough and an open position (62) wherein fluid in said tubular housing may flow through said at least one flow port (92); and locking means for locking said closing sleeve (102) in said closed position (60) whereby vertical movement of the closing sleeve relative to said tubular housing (70) is prevented.