US4664539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Serial safety bearing
Assignee: Florida State University
•
Filing: 1986-02-13
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Granted: 1987-05-12
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Expires: 2006-02-13
Abstract
Abstract Serial safety bearing assembly includes two concentric bearing sets and an actuatable device for selectively switching to engage either the inner or the outer of the two concentric bearing sets upon failure of one set or to alternate to first one set and then the other set thus to prolong the working life of the two concentric bearings.
Inventors
- 👤 Paul Z. Li
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:10
CPC Classifications
F; F16; F16C; F16C19/00; F16C19/54; F16C19/55; F16C19/52
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
74 words
A serial safety bearing assembly comprising an inner bearing ring; and outer bearing ring concentric to the inner bearing ring; and intermediate bearing ring between the inner and outer bearing rings; anti-friction bearings between the inner ring and the outer ring; a transversely movable clutch element splined to the intermediate bearing ring; a clutch plate mounted to rotate with the inner bearing ring and aligned with the clutch element; and clutch element actuating means.
Claim 2
Dependent Claim
74 words
A serial safety bearing assembly comprising an inner bearing ring; and outer bearing ring concentric to the inner bearing ring; and intermediate bearing ring between the inner and outer bearing rings; anti-friction bearings between the inner ring and the outer ring; a transversely movable clutch element splined to the intermediate bearing ring; a clutch plate mounted to rotate with the inner bearing ring and aligned with the clutch element; and clutch element actuating means.
Claim 3
Dependent Claim
40 words
The serial safety bearing assembly as defined in claim 1 wherein said outer bearing ring has a clutch plate mounted to rotate with the outer bearing ring and the clutch actuating element is movable toward either of the clutch plates.
Claim 4
Dependent Claim
21 words
A serial safety bearing assembly as defined in claim 2 wherein the clutch element actuating means comprises a polarized bi-directional solenoid.
Claim 5
Dependent Claim
34 words
A serial safety bearing assembly as defined in claim 1 wherein said clutch element is spring biased toward said clutch plate and latch means normally holding said clutch element away from said clutch plate.
Claim 6
Dependent Claim
23 words
A serial safety bearing assembly as defined in claim 4 wherein said latch is movable to a clutch actuating position by a solenoid.
Claim 7
Dependent Claim
29 words
A serial safety bearing assembly as defined in claim 5 including second latch means for holding the latch away from said clutch element upon actuation of the said solenoid.
Claim 8
Dependent Claim
39 words
A serial safety bearing assembly as defined in claim 1 including spring means normally urging said clutch element into engagement with said clutch plate and a fusible link holding said clutch element out of engagement with the clutch plate.
Claim 9
Dependent Claim
17 words
A serial safety bearing assembly as defined in claim 7 wherein the fusible element is electrically released.
Claim 10
Dependent Claim
35 words
The serial safety bearing assembly as defined in claim 1 wherein the clutch element is spring urged toward the clutch plate and held out of engagement with the clutch plate by a pivoting latch member.
Claim 11
Dependent Claim
22 words
The serial safety bearing assembly as defined in claim 9 wherein the pivoting latch member is spring urged into the unlatched position.
Claim 12
Dependent Claim
27 words
The serial safety bearing assembly as defined in claim 10 wherein such spring urged pivoting latch member is held in the latch position by controlled destructive means.
Claim 13
Dependent Claim
23 words
The serial safety bearing assembly as defined in claim 11 wherein the control destructive means comprises a metallic pin surrounded a chemical etchant.
Claim 14
Dependent Claim
31 words
The serial safety bearing assembly as defined in claim 11 wherein the controlled destructive means comprises an anode and a cathode and an electro lytic solution surrounding said anode and cathode.
Claim 15
Dependent Claim
19 words
The serial safety bearing assembly as defined in claim 11 wherein said controlled destructive means comprises an explosive bolt.
Claim 16
Dependent Claim
32 words
The serial safety bearing assembly as defined in claim 1 wherein said clutch element and said clutch plate are provided with conical surfaces to assure concentricity when the clutch element is actuated.
References Cited (Backward Citations)
US1366966A
Cited
US1433014A
Cited
US1494695A
Cited
US1506856A
Cited
US1742841A
Cited
US1748174A
Cited
US2647807A
Cited
US3452349A
Cited
US3597029A
Cited
US3642331A
Cited
US3603654A
Cited
US4045100A
Cited
US4425010A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-11 | 1990-11-10 | 1991-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-11 | 1994-11-10 | 1995-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-11 | 1998-11-10 | 1999-05-12 | $7700.00 | Window Closed / Lapsed |