Patent US4254985A successfully refreshed from Google Patents.
US4254985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Damping ring for rotating assemblies
Assignee: Soundcoat Co Inc
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Filing: 1979-03-23
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Granted: 1981-03-10
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Expires: 1999-03-23
Abstract
Abstract A vibration damping assembly for a wheel or the like that undergoes rotation is achieved by providing an annular groove in a surface of the wheel which is coaxial with the axis of the wheel. A viscoelastic damping material subject to shear deformation during rotation of the wheel is positioned within the groove against the surface of the groove, and an annular metal ring is positioned in the groove against the viscoelastic damping material with the damping material sandwiched between the ring and wheel.
Inventors
- 👤 Frank Kirschner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:12
CPC Classifications
B; B60; B60B; B60B17/00; B60B17/0027; F; F16; F16F; F16F15/00; F16F15/32; F16F15/324; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/1987; Y10T74/19893; Y10T74/19907
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
80 words
A vibration damping assembly for a wheel or the like that undergoes rotation comprising an annular groove in a surface of said wheel and coaxial with the axis of said wheel, a viscoelastic damping material subject to shear deformation during rotation of said wheel and positioned within said groove against the surface of said groove, and an annular metal ring positioned in said groove against said viscoelastic damping material with said damping material sandwiched between said ring and said wheel.
Claim 2
Dependent Claim
80 words
A vibration damping assembly for a wheel or the like that undergoes rotation comprising an annular groove in a surface of said wheel and coaxial with the axis of said wheel, a viscoelastic damping material subject to shear deformation during rotation of said wheel and positioned within said groove against the surface of said groove, and an annular metal ring positioned in said groove against said viscoelastic damping material with said damping material sandwiched between said ring and said wheel.
Claim 3
Dependent Claim
20 words
A vibration damping assembly according to claim 1, in which said viscoelastic damping material is adhesively secured to said wheel.
Claim 4
Dependent Claim
21 words
A vibration damping assembly according to claim 1, in which said viscoelastic damping material is adhesively secured to said annular ring.
Claim 5
Dependent Claim
25 words
A vibration damping assembly according to claim 1, in which said viscoelastic damping material is adhesively secured to said wheel and to said annular ring.
Claim 6
Dependent Claim
30 words
A vibration damping assembly according to claim 4, in which said viscoelastic damping material is adhesively secured to said wheel and to said annular ring by a flexible epoxy adhesive.
Claim 7
Dependent Claim
55 words
A vibration damping assembly according to claim 5, in which said annular groove is positioned in an inside surface of said wheel in a plane spaced from the plane defined by an outer edge of said wheel, said annular ring is of spring steel, and the cross section of said annular ring is generally circular.
References Cited (Backward Citations)
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US2267311A
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US2605132A
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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) | 1984-03-09 | 1984-09-08 | 1985-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-09 | 1988-09-08 | 1989-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-09 | 1992-09-08 | 1993-03-10 | $7700.00 | Window Closed / Lapsed |