Patent US2301283A successfully refreshed from Google Patents.
Patent US4058353A successfully refreshed from Google Patents.
US4058353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller bearing assembly with failsafe mechanism
Assignee: Airbus Defence and Space GmbH
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Filing: 1976-03-29
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Granted: 1977-11-15
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Expires: 1996-03-29
Abstract
Abstract One of two races of a roller bearing is equipped with a sliding ring exteng thereabout, with a melting ring formed of material having a melting point higher than the normal operating temperature of the bearing being interposed between the one race and the sliding ring. Malfunction of the bearing such as might occur by seizure of the bearing rollers will cause at least partial melting of the melting ring whereupon the one race is placed in relative sliding engagement through the melting ring with the sliding ring.
Inventors
- 👤 Hubert Frommlet
- 👤 Karl-Heinz Mautz
- 👤 Klaus Brunsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:48
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/54; B64C27/58; B64C27/59; B64C27/605; F; F16; F16C; F16C19/00; F16C19/52; F16C19/525; F16C2326/00; F16C2326/43
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
111 words
In a roller bearing assembly including a first race, a second race and bearing rollers operatively interposed therebetween, the improvement comprising a sliding ring arranged about one of said races and a melting ring interposed between said sliding ring and said one race, said melting ring being composed of material having a melting point higher than the normal operating temperature of said bearing, the material of said melting ring being such that it will melt when the operating temperature of the bearing rises above a normal operating temperature, with at least partial melting of said melting ring operating to enable relative sliding motion between said one race and said sliding ring.
Claim 2
Dependent Claim
111 words
In a roller bearing assembly including a first race, a second race and bearing rollers operatively interposed therebetween, the improvement comprising a sliding ring arranged about one of said races and a melting ring interposed between said sliding ring and said one race, said melting ring being composed of material having a melting point higher than the normal operating temperature of said bearing, the material of said melting ring being such that it will melt when the operating temperature of the bearing rises above a normal operating temperature, with at least partial melting of said melting ring operating to enable relative sliding motion between said one race and said sliding ring.
Claim 3
Dependent Claim
14 words
An assembly according to claim 1 wherein said melting ring consists of plastic material.
Claim 4
Dependent Claim
12 words
An assembly according to claim 2 wherein said plastic material is polyacetal.
Claim 5
Dependent Claim
14 words
An assembly according to claim 1 wherein said sliding ring consists of synthetic carbon.
Claim 6
Dependent Claim
16 words
An assembly according to claim 1 further including a supporting ring mounted about said sliding ring.
Claim 7
Dependent Claim
29 words
An assembly according to claim 5 wherein said melting ring, said sliding ring and said supporting ring are joined together to form a ring assembly having an angled profile.
Claim 8
Dependent Claim
29 words
An assembly according to claim 5 wherein said melting ring, said sliding ring and said supporting ring are joined together to form a ring assembly having a U-shaped profile.
Claim 9
Dependent Claim
16 words
An assembly according to claim 7 wherein said ring assembly is divided in the radial direction.
Claim 10
Dependent Claim
34 words
An assembly according to claim 5 wherein said melting ring, said sliding ring and said supporting ring are joined together in a unitary composite ring assembly adapted to be attached to said one race.
Claim 11
Dependent Claim
16 words
An assembly according to claim 9 wherein said ring assembly is divided in the radial direction.
Claim 12
Dependent Claim
16 words
An assembly according to claim 1 wherein said melting ring is open on a side thereof.
Claim 13
Dependent Claim
31 words
An assembly according to claim 1 wherein said bearing assembly is mounted as a bearing of a revolving ring of the swash plate of a rotor blade control device for helicopters.
References Cited (Backward Citations)
US2952238A
Cited
US3897116A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-11-14 | 1981-05-16 | 1981-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-14 | 1985-05-16 | 1985-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-14 | 1989-05-16 | 1989-11-15 | $7700.00 | Window Closed / Lapsed |