Patent EP0214825A2 successfully refreshed from Google Patents.
EP0214825A2
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Vibration damper
Assignee: Ford-Werke GmbH
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Filing: 1986-08-29
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Granted: —
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Expires: 2006-08-29
Abstract
Abstract A vibration damper for a machine includes a damping mass (18a,18b), means (10a,10b,14,16) for suspending the damping mass from a machine so as to produce damping within the suspension means when the damper is vibrated by the machine, and means (20a,20b) for elastically mounting the damping mass to the suspension means. The damping produced within the suspension means may be either viscoelastic or hysteretic or both. One or more viscoelastic elements (20,20b) is preferably interposed between the damping mass (18a,18b) and the suspension means (10a,10b,14,16) so as to produce viscoelastic damping. The vibration damper may be tuned so as to produce three or fewer frequencies by virtue of the action of the suspension means as well as three or fewer additional frequencies arising from the elastic mounting of the damping mass (18a,18b) to the suspension means (10a,10b,14,16).
Inventors
- 👤 Walter V. Paliga
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 22:54
CPC Classifications
F; F16; F16F; F16F7/00; F16F7/10; F16F7/104; F16F7/108; B; B60; B60K; B60K17/00; B60K17/22; B60K5/00; B60K5/12; B60K5/1208; B60G; B60G2202/00; B60G2202/20; B60G2202/25
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
55 words
A vibration damper for a machine comprising a damping mass (18a,18b) suspension means, (10a,10b,14, 16) for suspending said damping mass (18a,18b) from said machine so as to produce damping within said suspension means when said damper is vibrated by said machine, and means (20a,20b) for elastically mounting said damping mass (18a,18b) to said suspension means.
Claim 2
Dependent Claim
55 words
A vibration damper for a machine comprising a damping mass (18a,18b) suspension means, (10a,10b,14, 16) for suspending said damping mass (18a,18b) from said machine so as to produce damping within said suspension means when said damper is vibrated by said machine, and means (20a,20b) for elastically mounting said damping mass (18a,18b) to said suspension means.
Claim 3
Dependent Claim
16 words
A vibration damper according to Claim 1, wherein said suspension means comprises a viscoelastic damping element.
Claim 4
Dependent Claim
16 words
A vibration damper according to Claim 1, wherein said suspension means comprises a hysteretic damping element.
Claim 5
Dependent Claim
18 words
A vibration damper according to Claim 1, wherein said suspension means comprises both hysteretic and viscoelastic damping elements.
Claim 6
Dependent Claim
31 words
A vibration damper according to Claim 1, wherein said suspension means comprises at least one generally horizontal mounting bracket beam and anterior and posterior legs depending from said mounting bracket beam.
Claim 7
Dependent Claim
29 words
A vibration damper according to Claim 5, wherein said mounting bracket beam and said anterior and posterior legs are tuned to dampen vibrations at three or fewer separate frequencies.
Claim 8
Dependent Claim
35 words
A vibration damper according to Claim 1, wherein said means for elastically mounting said damping means to said suspension means comprises one or more viscoelastic elements interposed between said damping mass and said suspension means.
Claim 9
Dependent Claim
20 words
A vibration damper according to Claim 7, wherein said viscoelastic elements are tuned to dampen vibrations at three separate frequencies.
Claim 10
Dependent Claim
15 words
A vibration damper according to Claim 1, wherein said suspension means comprises a space frame.
Claim 11
Dependent Claim
29 words
A vibration damper according to Claim 9, wherein said space frame comprises one or more structural elements with each such element tuned to dampen vibration at a particular frequency.
Claim 12
Dependent Claim
32 words
A vibration damper according to Claim 9, wherein the damping frequencies of said damper can be adjusted by changing the location at which said tuning mass is mounted to said space frame.
Claim 13
Dependent Claim
20 words
A vibration damper according to Claim 9, wherein said space frame comprises one or more structural sections having laminated construction.
Claim 14
Dependent Claim
31 words
A vibration damper according to Claim 12, wherein said one or more structural sections having laminated construction, each comprising a core of viscoelastic material interposed between two relatively inelastic structural layers.
Claim 15
Dependent Claim
31 words
A vibration damper according to Claim 12, wherein said one or more structural sections having laminated construction, each comprising a layer of viscoelastic material bonded to a relatively inelastic structural layer.
Claim 16
Dependent Claim
22 words
A vibration damper according to Claim 9, wherein the location of said damping mass is adjustable with respect to said space frame.
Claim 17
Dependent Claim
23 words
A vibration damper according to Claim 9, wherein said tunable space frame is mounted to the transmission extension housing of an automotive vehicle.
Claim 18
Dependent Claim
49 words
A vibration damper according to Claim 9, including a bracket for mounting said damper to an automotive vehicle and means for adjustably mounting said damping mass to at least one of said tunable legs and wherein said space means includes two or more tunable legs depending from said bracket.
Claim 19
Dependent Claim
32 words
A vibration damper according to Claim 17, wherein said means for adjustably mounting said damping mass comprises means for fixing the location of said mass at a predetermined distance from said bracket.
Claim 20
Dependent Claim
19 words
A vibration damper according to Claim 17, wherein each of said tunable legs is independently replaceable for tuning purposes.
References Cited (Backward Citations)
No citation records indexed.
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