US4380574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-damping composite material
Assignee: BBC BROWN BOVERI & COMPANY LTD
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Filing: 1979-05-21
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Granted: 1983-04-19
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Expires: 1999-05-21
Abstract
Abstract A high-damping composite material, which consists of a metal or metal alloy base material having poor damping properties which determines the strength and shape of said material, and a metal or metal-alloy surface layer surrounding said base material on all sides which has high mechanical damping properties.
Inventors
- 👤 Gernot Gessinger
- 👤 Olivier Mercier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:01
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/01; B32B15/013; C; C23; C23C; C23C30/00; F; F01; F01D; F01D5/00; F01D5/02; F01D5/10; F01D5/12; F01D5/28; F01D5/288; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12937; Y10T428/12986
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
69 words
A procedure for manufacture of machine components which are highly stressed mechanically and thermally, comprising: forming said machine components from a metal or metal alloy base material having poor damping properties which determines the strength and shape of said component; and subsequently coating all the surfaces of the resulting component with a metal or metal alloy having high damping characteristics sufficient to improve the lifetime of said machine component.
Claim 2
Dependent Claim
69 words
A procedure for manufacture of machine components which are highly stressed mechanically and thermally, comprising: forming said machine components from a metal or metal alloy base material having poor damping properties which determines the strength and shape of said component; and subsequently coating all the surfaces of the resulting component with a metal or metal alloy having high damping characteristics sufficient to improve the lifetime of said machine component.
Claim 3
Dependent Claim
70 words
In a machine component subjected to mechanical and thermal stresses, the improvement which comprises: said component comprising a structure consisting of a metal or metal alloy base material having poor damping properties which determines the strength and shape of said component and a metal or metal alloy surface layer surrounding said base metal on all sides having high mechanical damping properties sufficient to improve the lifetime of said machine component.
Claim 4
Dependent Claim
70 words
In a machine component subjected to mechanical and thermal stresses, the improvement which comprises: said component comprising a structure consisting of a metal or metal alloy base material having poor damping properties which determines the strength and shape of said component and a metal or metal alloy surface layer surrounding said base metal on all sides having high mechanical damping properties sufficient to improve the lifetime of said machine component.
Claim 5
Dependent Claim
14 words
The machine component of claim 2, wherein said machine component is a turbine blade.
Claim 6
Dependent Claim
15 words
The machine component of claim 2, wherein said machine component is a steam turbine blade.
Claim 7
Dependent Claim
14 words
The machine component of claim 2, wherein said machine component is a compressor blade.
Claim 8
Dependent Claim
14 words
The machine component of claim 2, wherein said machine component is a compressor wheel.
Claim 9
Dependent Claim
14 words
The machine component of claim 2, wherein said machine component is a turbine wheel.
Claim 10
Dependent Claim
18 words
The machine component of claim 2, wherein said machine component is a casing part for a thermal machine.
References Cited (Backward Citations)
AU139210B2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-04-18 | 1986-10-18 | 1987-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-18 | 1990-10-18 | 1991-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-18 | 1994-10-18 | 1995-04-19 | $7700.00 | Window Closed / Lapsed |