Gas bearing and method of making same
Abstract
Abstract An improved externally pressurized gas bearing and method of making same have been provided wherein the porous bearing surface is modified by a surface treatment which yields a boundary layer having selected permeability limits. The bearing materials are machined or formed by conventional means to the desired shape and size, then lapped to the desired surface finish and treated with an impregnant dissolved in a suitable solvent. The permeability of the bearing is then checked to determine areas of high permeability. The bearing surface is then selectively treated so as to provide uniform limited permeability at the surface of the bearing. This process provides restricted uniform gas flow to the bearing film at the bearing surface thereby providing improved operational stability by greater damping of self-induced or externally-induced vibrations of a load member supported for movement with respect to the bearing surface, independent of the bearing loading.
Inventors
- 👤 W Rasnick
- 👤 P Steger
Bibliographic Details
Claims Analysis
Total Claims: 3References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-19 | 1976-09-18 | 1977-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-19 | 1980-09-18 | 1981-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-19 | 1984-09-18 | 1985-03-20 | $7700.00 | Window Closed / Lapsed |