Fluid injection apparatus for fluid dynamic pressure bearing

Details Fluid injection apparatus for fluid dynamic pressure bearing Fluid injection apparatus for fluid dynamic pressure bearing

2006-07-11

2006-07-11

Fenstermacher, David (Department: 3682)

Lubrication

Lubricators

Force feed

C184S064000, C384S399000

Reexamination Certificate

active

07073630

ABSTRACT:
A fluid injection apparatus for a bearing includes a bearing support surface for supporting the bearing so that a seal space is defined between the support surface and the bearing, a fluid injection passage comprised of an oil tank, a first conduit connecting the oil tank to the seal space, and an injection valve provided in the conduit, a decompression passage comprised of an oil recovery tank, a second conduit connecting the oil recovery tank to the seal space, a vacuum pump connected to the seal space through the oil recovery tank, and a decompression valve provided in the second conduit, and a sequence control unit for evacuating the bearing by closing the injection valve, opening the decompression valve, and turning on the vacuum pump, and then filling the bearing with lubricating oil by turning off the vacuum pump, closing the decompression valve, and opening the injection valve.

REFERENCES:
patent: 5524728 (1996-06-01), Williams et al.
patent: 5575355 (1996-11-01), Williams et al.
patent: 6170611 (2001-01-01), Daly

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