US4084861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thrust bearing damping means
Assignee: RTX Corp
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Filing: 1976-11-11
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Granted: 1978-04-18
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Expires: 1996-11-11
Abstract
Abstract A radial deflecting support member interposed between the damper support and the thrust bearing transmits the thrust loads and permits the use of an oil damper in a thrust loaded environment. The radial deflecting support has a spring rate that is at least equal to or lower than the damper support, so that when the radial deflecting support bottoms out the radial load will be absorbed by the damper support.
Inventors
- 👤 Paul B. Greenberg
- 👤 Stephen D. Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:52
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/16; F01D25/162; F01D25/164; F16; F16C; F16C27/00; F16C27/04; F16C27/045; F16C19/00; F16C19/02; F16C19/04; F16C19/06; F16C2360/00; F16C2360/23
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
126 words
For a thrust bearing rotatably supporting a shaft having a rotor developing thrust, support means having an annular portion concentric to and spaced from said thrust bearing, a radially flexible support means mounted between said thrust bearing and said support means normally supporting said thrust bearing, said radially flexible support means having a concentrically disposed annular portion defining between its outer diameter and the inner diameter of the annular portion of said support means a cavity for supporting an oil film for damping out vibration manifested by said shaft being transmitted thereto through said radially flexible support means and means securing said radially flexible support means and said support means so that thrust loads are transmitted to said securing means through said radially flexible support means.
Claim 2
Dependent Claim
126 words
For a thrust bearing rotatably supporting a shaft having a rotor developing thrust, support means having an annular portion concentric to and spaced from said thrust bearing, a radially flexible support means mounted between said thrust bearing and said support means normally supporting said thrust bearing, said radially flexible support means having a concentrically disposed annular portion defining between its outer diameter and the inner diameter of the annular portion of said support means a cavity for supporting an oil film for damping out vibration manifested by said shaft being transmitted thereto through said radially flexible support means and means securing said radially flexible support means and said support means so that thrust loads are transmitted to said securing means through said radially flexible support means.
Claim 3
Dependent Claim
36 words
For a thrust bearing as in claim 1 wherein said radially flexible support means is generally conical in shape, having the annular portion on one end and the opposite end being secured to a grounded member.
Claim 4
Dependent Claim
33 words
For a thrust bearing as in claim 2 wherein said radially flexible support means includes a plurality of circumferentially spaced web-like elements extending between the base and apex of said conically shaped element.
Claim 5
Dependent Claim
54 words
For a thrust bearing as in claim 2 wherein the stiffness of said support means is selected to absorb the radial loads manifested by a radial overload imposed on the thrust bearing so that the radially flexible support means is grounded on said support means and being rendered inoperative as a damping transmitting member.
Claim 6
Dependent Claim
30 words
For a thrust bearing as in claim 1 including axially spaced seal members between said annular portion of said support means and annular portion of said radially flexible support means.
Claim 7
Dependent Claim
34 words
For a thrust bearing as in claim 1 wherein the spring rate of said radially flexible support means is substantially equal to the spring rate of said film of oil constituting the oil damper.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-17 | 1981-10-17 | 1982-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-17 | 1985-10-17 | 1986-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-17 | 1989-10-17 | 1990-04-18 | $7700.00 | Window Closed / Lapsed |