Apparatus for preventing gas flow through bearings
Abstract
Abstract 1,166,012. Bearings. ROTRON Inc. 20 March, 1968 [23 March, 1967], No. 13557/68. Heading F2A. A machine such as a compressor, in which there is a rotary member 24 carried in a bearing 28 with separated spaces at different pressures P 2 , P 4 during operation on the two sides of the bearing, has a pressure-equalizing arrangement to prevent lubricant being blown out of the bearing, comprising a pressure balance space 50 on one side of and communicating with the bearing, a passage 56 connecting the balance space with the space 16 on the other side of the bearing, and a rotary seal 58 between the balance space and the space 14, across which the pressure differential is maintained. The rotary seal may be constituted by a close clearance between fixed and rotary components.
Inventors
- 👤 Zoehfeld Gunther
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |