Externally pressurized gas bearing and spindle equipment...

Details Externally pressurized gas bearing and spindle equipment... Externally pressurized gas bearing and spindle equipment...

2006-06-27

2006-06-27

Hannon, Thomas R. (Department: 3682)

Bearings

Rotary bearing

Fluid bearing

Reexamination Certificate

active

07066652

ABSTRACT:
An externally pressurized gas bearing comprising a main shaft, and journal bearing sections having a plurality of axial gas feed rows each having a plurality of circumferentially equispaced gas feed holes, the gas feed holes in the gas feed rows being adapted to spout compressed gas to thereby rotatably radially support the main shaft in a non-contact state, the externally pressurized gas bearing being arranged so that the gas feed holes in the gas feed row are disposed so as to be positioned circumferentially intermediate between gas feed holes in the adjoining gas feed row.

REFERENCES:
patent: 3049383 (1962-08-01), Loch
patent: 3588197 (1971-06-01), Barnett
patent: 3617102 (1971-11-01), Wada et al.
patent: 5073037 (1991-12-01), Fujikawa et al.
patent: 6019515 (2000-02-01), Fujii et al.
patent: 6328475 (2001-12-01), Jager
patent: 6439773 (2002-08-01), Fujikawa et al.

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