Patent US4232762A successfully refreshed from Google Patents.
US4232762A
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Wide-band vibration damper
Assignee: Airbus Defence and Space GmbH
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Filing: 1978-07-24
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Granted: 1980-11-11
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Expires: 1998-07-24
Abstract
Abstract A wide-band vibration damper for damping sound propagating in a solid body includes at least one horn member having a broad end or side and a tapering end. The broad horn side or end is rigidly connected to the solid body which is to be dampened in its vibration. The tapering end of the horn member is connected to a supporting rigid point through a damping material such as a foam material or the like.
Inventors
- 👤 Oskar Bschorr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:58
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/16; F; F16; F16L; F16L55/00; F16L55/02; F16L55/033; F16L55/0336
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
184 words
A wide-band vibration damper for damping sound propagating in a solid body, comprising sound vibration conductor means, the entire volume of which is solid material, said sound vibration conductor means having a first larger end and a second smaller end, said first larger end having a larger dimension than said second smaller end, whereby said solid material volume has a cross-section which diminishes from said first larger end to said second smaller end, said first larger and second smaller end being interconnected entirely by said solid material so that sound vibrations travelling from said first larger end to said second smaller end must travel entirely through said solid material volume, first means connecting said first larger end to said solid body for introducing sound vibrations into said solid material volume, support means located near said second smaller end, and damping material means operatively connecting said second smaller end to said support means for introducing sound vibrations in a damped manner into said support means, whereby said vibration conductor due to its diminishing cross-section transforms the sound vibrations into large excursions but small vibration forces.
Claim 2
Dependent Claim
184 words
A wide-band vibration damper for damping sound propagating in a solid body, comprising sound vibration conductor means, the entire volume of which is solid material, said sound vibration conductor means having a first larger end and a second smaller end, said first larger end having a larger dimension than said second smaller end, whereby said solid material volume has a cross-section which diminishes from said first larger end to said second smaller end, said first larger and second smaller end being interconnected entirely by said solid material so that sound vibrations travelling from said first larger end to said second smaller end must travel entirely through said solid material volume, first means connecting said first larger end to said solid body for introducing sound vibrations into said solid material volume, support means located near said second smaller end, and damping material means operatively connecting said second smaller end to said support means for introducing sound vibrations in a damped manner into said support means, whereby said vibration conductor due to its diminishing cross-section transforms the sound vibrations into large excursions but small vibration forces.
Claim 3
Dependent Claim
22 words
The wide-band vibration damper of claim 1, wherein said support means are an integral part of the solid body to be damped.
Claim 4
Dependent Claim
22 words
The wide-band vibration damper according to claim 1, wherein said solid vibration conductor means comprise a base serving as the support means.
Claim 5
Dependent Claim
29 words
The wide-band vibration damper of claim 1, wherein the damping factor of the damping material means is substantially equal to the termination impedance of the solid vibration conductor means.
Claim 6
Dependent Claim
35 words
The wide-band vibration damper of claim 1, wherein said solid vibration conductor means comprise contiguous linear horn members fastened to the solid body to be damped, whereby the stiffness of the overall structure is increased.
Claim 7
Dependent Claim
27 words
The wide-band vibration damper of claim 1, wherein for peaking the impedance at given frequencies, the vibration in the solid vibration conductor means is attenuated only incompletely.
Claim 8
Dependent Claim
18 words
The wide-band vibration damper of claim 6, further comprising intermediate masses attached to the solid vibration conductor means.
Claim 9
Dependent Claim
18 words
The wide-band vibration damper of claim 6, wherein stiffness steps are provided in the solid vibration conductor means.
Claim 10
Dependent Claim
46 words
The wide-band vibration damper of claim 6, wherein for eliminating intercoupling in the case of curved solid vibration conductor means, the latter comprise two horn members with mutual mirror-symmetry which are joined together with a narrow horn end to a broad horn end and vice versa.
Claim 11
Dependent Claim
29 words
The wide-band vibration damper of claim 6, wherein for eliminating intercoupling, the solid vibration conductor means comprise four helical horn members which are symmetrically joined together along two axes.
Claim 12
Dependent Claim
18 words
The wide-band vibration damper of claim 6, further comprising end masses attached to the solid vibration conductor means.
Claim 13
Dependent Claim
35 words
The wide-band vibration damper of claim 1, wherein said solid vibration conductor means comprise contiguous areal horn members fastened to the solid body to be damped, whereby the stiffness of the overall structure is increased.
Claim 14
Dependent Claim
52 words
The wide-band vibration damper of claim 1, wherein said solid vibration conductor means comprise a solid horn member made of flat, solid stock and extending substantially in parallel to said solid body to be damped whereby both ends of said solid horn member are connected to said solid body to be damped.
Claim 15
Dependent Claim
27 words
The wide-band vibration damper of claim 1, wherein said solid vibration conductor means comprise a horn member made of a solid rod twisted into a curved shape.
Claim 16
Dependent Claim
68 words
The wide-band vibration damper of claim 1, wherein said solid vibration conductor means comprise a solid horn member made of a flat metal piece with slots therein so that said narrow end of the solid horn member is formed directly within the broad end of the solid horn member, and wherein said damping material means connect said narrow horn end to the broad horn end through said slots.
Claim 17
Dependent Claim
31 words
The wide-band vibration damper of claim 1, wherein said solid vibration conductor means comprise two solid horn members each twisted into a respective helix which fits into the corresponding other helix.
Claim 18
Dependent Claim
84 words
The wide-band vibration damper of claim 1, wherein said solid vibration conductor means comprise a plurality of elongated solid horn members each having a ridge extending along the entire length of the respective horn member, said ridge forming the narrow horn end, each horn member further having a foot also extending along the entire length of the respective horn member, said foot forming the broad horn end, said plurality of horn members being arranged in intersecting fashion whereby the ridges form a grid pattern.
Claim 19
Dependent Claim
25 words
The wide-band vibration damper of claim 1, wherein said solid vibration conductor means comprise a solid horn member arranged in a number of meandering loops.
Claim 20
Dependent Claim
36 words
The wide-band vibration damper of claim 18, wherein said meandering loops have solid material legs which are wider adjacent said broad horn end and narrower adjacent said narrower horn end, said meandering legs forming gaps therebetween.
Claim 21
Dependent Claim
25 words
The wide-band vibration damper of claim 19, wherein said damping material connects the free end of the narrowest meandering loop leg to said support means.
Claim 22
Dependent Claim
33 words
The wide-band vibration damper of claim 20, comprising further damping material in which the entire solid horn member is embedded thereby filling the gaps between said legs and covering the solid horn member.
Claim 23
Dependent Claim
103 words
A wide-band vibration damper for reducing sound propagation in fluid conduits comprising a plurality of coaxially arranged horn members, first and second fluid conduit means and housing means operatively interconnecting said first and second conduit means, said horn members being operatively disposed in said housing means so that gaps are formed between adjacent horn members, said gaps alternately tapering in opposite directions, whereby at least one tapering gap is formed between said conduit means and the horn member of smallest diameter and a further tapering gap is formed between said smallest diameter horn member and a horn member having the next larger diameter.
Claim 24
Dependent Claim
103 words
A wide-band vibration damper for reducing sound propagation in fluid conduits comprising a plurality of coaxially arranged horn members, first and second fluid conduit means and housing means operatively interconnecting said first and second conduit means, said horn members being operatively disposed in said housing means so that gaps are formed between adjacent horn members, said gaps alternately tapering in opposite directions, whereby at least one tapering gap is formed between said conduit means and the horn member of smallest diameter and a further tapering gap is formed between said smallest diameter horn member and a horn member having the next larger diameter.
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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) | 1983-11-11 | 1984-05-12 | 1984-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-11 | 1988-05-12 | 1988-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-11 | 1992-05-12 | 1992-11-11 | $7700.00 | Window Closed / Lapsed |