US4900165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing support system
Assignee: Praxair Technology Inc
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Filing: 1988-08-15
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Granted: 1990-02-13
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Expires: 2008-08-15
Abstract
Abstract A bearing support system providing axial thrust load control of bearing supporting a rotating element, by retaining the bearings with a slotted inner ring and supporting the inner ring with a radially spaced outer ring by means of a plurality of circumferentially spaced supports which are radially stiff but axially flexible.
Inventors
- 👤 Leslie C. Kun
- 👤 Neno T. Nenov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:46
CPC Classifications
F; F16; F16C; F16C27/00; F16C27/04; F01; F01D; F01D25/00; F01D25/16; F01D25/162; F01D25/164; F16C19/00; F16C19/52; F16C19/522; F16C19/02; F16C19/04; F16C19/06; F16C2360/00
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
135 words
A bearing support system for high-speed rotating machinery comprising: (A) an inner ring for retention of one or more bearings in support of a rotating element of the machinery, said inner ring having at least two radially spaced slots therein said slots having a width within the range of from 0.002 to 0.100 inch and a depth within the range of from one to two times the width of the bearing; (B) an outer ring, radially spaced from the inner ring, and attachable to a stationary element of the machinery; and (C) at least two circumferentially spaced structural members between and in contact with the inner and outer rings, and serving to support the inner ring on the outer ring, said structural members being stiff in the radial direction but flexible in the axial direction.
Claim 2
Dependent Claim
135 words
A bearing support system for high-speed rotating machinery comprising: (A) an inner ring for retention of one or more bearings in support of a rotating element of the machinery, said inner ring having at least two radially spaced slots therein said slots having a width within the range of from 0.002 to 0.100 inch and a depth within the range of from one to two times the width of the bearing; (B) an outer ring, radially spaced from the inner ring, and attachable to a stationary element of the machinery; and (C) at least two circumferentially spaced structural members between and in contact with the inner and outer rings, and serving to support the inner ring on the outer ring, said structural members being stiff in the radial direction but flexible in the axial direction.
Claim 3
Dependent Claim
14 words
The bearing support system of claim 1 wherein the bearings are rolling elements bearings.
Claim 4
Dependent Claim
13 words
The bearing support system of claim 1 wherein the bearings are journal bearings.
Claim 5
Dependent Claim
20 words
The bearing support system of claim 1 wherein the slots are offset by 90 degrees with respect to each other.
Claim 6
Dependent Claim
20 words
The bearing support system of claim 1 wherein the slots are offset by 120 degrees with respect to each other.
Claim 7
Dependent Claim
20 words
The bearing support system of claim 1 wherein the slots are offset by 180 degrees with respect to each other.
Claim 8
Dependent Claim
12 words
The bearing support system of claim 1 wherein the slots are empty.
Claim 9
Dependent Claim
13 words
The bearing support system of claim 1 wherein the slots contain damping material.
Claim 10
Dependent Claim
37 words
The bearing support system of claim 1 wherein the flexibility of the structural members in the axial direction allows a deflection of 20 to 80 percent of the minimum rotating element clearance under expected maximum axial load.
Claim 11
Dependent Claim
15 words
The bearing support system of claim 1 wherein the structural members are equidistantly circumferentially spaced.
Claim 12
Dependent Claim
20 words
The bearing support system of claim 1 wherein the structural members are damped by having a coating of damping material.
Claim 13
Dependent Claim
21 words
The bearing support system of claim 1 wherein the inner ring contains damping material on at least one of its faces.
Claim 14
Dependent Claim
27 words
The bearing support system of claim 1 wherein at least one structural member is equipped with a sensor which can detect axial force on the structural member.
Claim 15
Dependent Claim
30 words
The bearing support system of claim 13 wherein the force sensor is connected electronically to a valve controller controlling a valve which passes high pressure fluid to compensate for axial
Claim 16
Dependent Claim
119 words
A bearing support system for high-speed rotating machinery comprising: (A) an inner ring for retention of one or more bearings in support of a rotating element of the machinery, said inner ring having at least two radially spaced slots therein and wherein the inner ring contains damping material on at least one of its faces; (B) an outer ring, radially spaced from the inner ring, and attachable to a stationary element of the machinery; and (C) at least two circumferentially spaced structural members between and in contact with the inner and outer rings, and serving to support the inner ring on the outer ring, said structural members being stiff in the radial direction but flexible in the axial direction.
Claim 17
Dependent Claim
119 words
A bearing support system for high-speed rotating machinery comprising: (A) an inner ring for retention of one or more bearings in support of a rotating element of the machinery, said inner ring having at least two radially spaced slots therein and wherein the inner ring contains damping material on at least one of its faces; (B) an outer ring, radially spaced from the inner ring, and attachable to a stationary element of the machinery; and (C) at least two circumferentially spaced structural members between and in contact with the inner and outer rings, and serving to support the inner ring on the outer ring, said structural members being stiff in the radial direction but flexible in the axial direction.
Claim 18
Dependent Claim
117 words
A bearing support system for high-speed rotating machinery comprising: (A) an inner ring for retention of one or more bearings in support of a rotating element of the machinery, said inner ring having at least two radially spaced slots therein; (B) an outer ring, radially spaced from the inner ring, and attachable to a stationary element of the machinery; and (C) at least two circumferentially spaced structural members between and in contact with the inner and outer rings, and serving to support the inner ring on the outer ring, said structural members being stiff in the radial direction but flexible in the axial direction, wherein the structural members are damped by having a coating of damping material.
Claim 19
Dependent Claim
117 words
A bearing support system for high-speed rotating machinery comprising: (A) an inner ring for retention of one or more bearings in support of a rotating element of the machinery, said inner ring having at least two radially spaced slots therein; (B) an outer ring, radially spaced from the inner ring, and attachable to a stationary element of the machinery; and (C) at least two circumferentially spaced structural members between and in contact with the inner and outer rings, and serving to support the inner ring on the outer ring, said structural members being stiff in the radial direction but flexible in the axial direction, wherein the structural members are damped by having a coating of damping material.
Claim 20
Dependent Claim
124 words
A bearing support system for high-speed rotating machinery comprising: (A) an inner ring for retention of one or more bearings in support of a rotating element of the machinery, said inner ring having at least two radially spaced slots therein; (B) an outer ring, radially spaced from the inner ring, and attachable to a stationary element of the machinery; and (C) at least two circumferentially spaced structural members between and in contact with the inner and outer rings, and serving to support the inner ring on the outer ring, said structural members being stiff in the radial direction but flexible in the axial direction wherein at least one structural member is equipped with a sensor which can detect axial force on the structural member.
Claim 21
Dependent Claim
124 words
A bearing support system for high-speed rotating machinery comprising: (A) an inner ring for retention of one or more bearings in support of a rotating element of the machinery, said inner ring having at least two radially spaced slots therein; (B) an outer ring, radially spaced from the inner ring, and attachable to a stationary element of the machinery; and (C) at least two circumferentially spaced structural members between and in contact with the inner and outer rings, and serving to support the inner ring on the outer ring, said structural members being stiff in the radial direction but flexible in the axial direction wherein at least one structural member is equipped with a sensor which can detect axial force on the structural member.
Claim 22
Dependent Claim
42 words
The bearing support system of claim 17 wherein the force sensor is connected electronically to a valve controller controlling a valve which passes high pressure fluid to compensate for axial thrust on the bearing and maintain axial load within a desired range.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-02-12 | 1993-08-14 | 1994-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-12 | 1997-08-14 | 1998-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-12 | 2001-08-14 | 2002-02-13 | $7700.00 | Window Closed / Lapsed |