US3640149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibration dampers utilizing reinforced viscoelastic fluids
Assignee: Vibratech Inc
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Filing: 1969-08-26
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Granted: 1972-02-08
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Expires: 1989-08-26
Abstract
Abstract A vibration damper of the type having relatively movable parts with spaced confronting surfaces disposed to move in parallel relation during movement of the parts is provided with reinforced viscoelastic material in the space between the parts in engagement with the surfaces and shearingly resisting the relative movement.
Inventors
- 👤 Ronald L Mclean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:55
CPC Classifications
F; F16; F16F; F16F15/00; F16F15/10; F16F15/16; F16F15/167; F16F15/173; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2121; Y10T74/2122
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
91 words
A tuned viscous vibration damper including relatively moveable parts having spaced confronting surfaces which will move in parallel relation during movements of said parts, the improvement comprising: reinforced viscoelastic material comprising Beta SiC fibers and viscous fluid of known viscosity in relative proportions exemplified by about 1 to 4 percent of fibers by weight to fluid of 30,000 to 60,000 centistokes viscosity located in the space between said parts and in engagement with said surfaces and adapted for shearingly and elastically resisting said relative movement for viscous and tuned vibration damping.
Claim 2
Dependent Claim
91 words
A tuned viscous vibration damper including relatively moveable parts having spaced confronting surfaces which will move in parallel relation during movements of said parts, the improvement comprising: reinforced viscoelastic material comprising Beta SiC fibers and viscous fluid of known viscosity in relative proportions exemplified by about 1 to 4 percent of fibers by weight to fluid of 30,000 to 60,000 centistokes viscosity located in the space between said parts and in engagement with said surfaces and adapted for shearingly and elastically resisting said relative movement for viscous and tuned vibration damping.
Claim 3
Dependent Claim
39 words
A damper according to claim 1, wherein said viscous fluid comprises silicone and said fibers comprise submicroscopic whiskers having an analysis of about 74 percent SiO2 and about 26 percent SiC supported in a matrix of the silicone fluid.
Claim 4
Dependent Claim
82 words
A tuned viscous vibration damper including relatively movable parts having spaced confronting surfaces which will move in parallel relation during movements of said parts, the improvement comprising: reinforced viscoelastic material comprising finely divided elastomeric material and viscous fluid in relative proportions exemplified by about 95 percent of elastomer to about 5 percent fluid located in the space between said parts and in engagement with said surfaces and adapted for shearingly and elastically resisting said relative movement for viscous and tuned vibration damping.
Claim 5
Dependent Claim
82 words
A tuned viscous vibration damper including relatively movable parts having spaced confronting surfaces which will move in parallel relation during movements of said parts, the improvement comprising: reinforced viscoelastic material comprising finely divided elastomeric material and viscous fluid in relative proportions exemplified by about 95 percent of elastomer to about 5 percent fluid located in the space between said parts and in engagement with said surfaces and adapted for shearingly and elastically resisting said relative movement for viscous and tuned vibration damping.
Claim 6
Dependent Claim
36 words
A damper according to claim 3, wherein said elastomeric material is of such minutely particulate form that it effectively resists centrifuging migration under operating conditions and will remain in substantially uniform dispersion in the fluid matrix.
Claim 7
Independent Claim
119 words
A method of damping vibrations by means of a damper having a part adapted to be attached to a vibration prone member and a relatively movable part and in which the parts have spaced confronting surfaces which will move in parallel relation during movements of the parts, and comprising: mixing Beta SiC fibers in a uniform dispersion in viscous fluid having a known natural viscosity in relative proportions exemplified by about 1 to 4 percent of whiskers to fluid of from 30,000 to 60,000 centistokes to provide a reinforced viscoelastic material: loading the reinforced viscoelastic material into the space between said surfaces and into engagement with said surfaces; and elastically and shearingly resisting relative parallel movements of said surfaces.
Claim 8
Independent Claim
119 words
A method of damping vibrations by means of a damper having a part adapted to be attached to a vibration prone member and a relatively movable part and in which the parts have spaced confronting surfaces which will move in parallel relation during movements of the parts, and comprising: mixing Beta SiC fibers in a uniform dispersion in viscous fluid having a known natural viscosity in relative proportions exemplified by about 1 to 4 percent of whiskers to fluid of from 30,000 to 60,000 centistokes to provide a reinforced viscoelastic material: loading the reinforced viscoelastic material into the space between said surfaces and into engagement with said surfaces; and elastically and shearingly resisting relative parallel movements of said surfaces.
Claim 9
Dependent Claim
17 words
A method according to claim 5, wherein the whiskers are mixed in uniform dispersion in silicone fluid.
Claim 10
Independent Claim
109 words
A method of damping vibrations by means of a damper having a part adapted to be attached to a vibration prone member and a relatively movable part and in which the parts have spaced confronting surfaces which will move in parallel relation during movements of the parts, and comprising: mixing into uniform dispersion finely divided elastomer in viscous fluid matrix in relative proportions exemplified by about 95 percent elastomer to about 5 percent fluid matrix to provide said reinforced viscoelastic material; loading the reinforced viscoelastic material into the space between said surfaces and into engagement with said surfaces; and elastically and shearingly resisting relative parallel movements of said surfaces.
Claim 11
Independent Claim
109 words
A method of damping vibrations by means of a damper having a part adapted to be attached to a vibration prone member and a relatively movable part and in which the parts have spaced confronting surfaces which will move in parallel relation during movements of the parts, and comprising: mixing into uniform dispersion finely divided elastomer in viscous fluid matrix in relative proportions exemplified by about 95 percent elastomer to about 5 percent fluid matrix to provide said reinforced viscoelastic material; loading the reinforced viscoelastic material into the space between said surfaces and into engagement with said surfaces; and elastically and shearingly resisting relative parallel movements of said surfaces.
Claim 12
Dependent Claim
22 words
A method according to claim 7, wherein the finely divided elastomer is dispersed in silicone fluid to provide the viscous fluid matrix.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |