Method of operating a rotating assembly
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United States of America Patent
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Apr 8, 1997
Grant Date -
N/A
app pub date -
Nov 24, 1995
filing date -
Dec 22, 1994
priority date (Note) -
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status (Latency Note)
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Abstract
A rotating assembly (10) comprises an inner (12) and an outer ring (14) having a hydrostatic bearing therebetween. The bearing incorporates fluid passageways (30 and 32) between confronting surfaces (22, 24, 26 and 28) of the rings (12 and 14). When rotation is required the surfaces (22, 24, 26 and 28) are separated by the supply of a pressurised flow of fluid to both of the passageways (30 and 32). The bearing can be locked to prevent rotation by removal of the fluid in one of the passageways (32) whilst maintaining the flow of pressurised fluid in the other passageway (30) so as to hold confronting surfaces (26 and 28) in contact with one another. Frictional forces between the confronting surfaces (26 and 28) prevents rotation of the ring (14) and the flow of pressurised fluid prevents the confronting surfaces (26 and 28) separating under the application of a moment.
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