Boring machine having hydrostatic bearings
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Aug 10, 1999
Issued Date -
N/A
app pub date -
Jun 13, 1997
filing date -
Feb 17, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A boring machine having a cutter head rotatably mounted on a hydrostatic bearing. High pressure water is supplied to passageways between confronting bearing surfaces which react axial and radial loads and which are capable of relative rotational movement. The flow of pressurized water discharges from the passageways to prevent contamination of the bearing by the ingress of material removed by the cutter head in operation.
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