Patent US4923034A successfully refreshed from Google Patents.
US4923034A
Expired / Lapsed
US
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Vibration-controlling member
Assignee: Panasonic Electric Works Co Ltd
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Filing: 1988-09-15
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Granted: 1990-05-08
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Expires: 2008-09-15
Abstract
Abstract A vibration-controlling member is made by containing a flake-shaped powdery substance having vibration controlling action in a retainer adhered to one surface of a surface sheet. Any external shock imparted to the member is subjected to the vibration controlling action due to a grain boundary friction of the powdery substance.
Inventors
- 👤 Masayuki Okuzawa
- 👤 Yuza Okudaira
- 👤 Futoshi Maeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:17
CPC Classifications
B; B32; B32B; B32B21/00; B32B21/04; B32B21/047; E; E04; E04B; E04B1/00; E04B1/62; E04B1/92; E04B1/98; B32B5/00; B32B5/18; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0278; B32B2305/00; B32B2305/02; B32B2305/022; B32B2307/00; B32B2307/50; B32B2307/56; B32B2315/00; B32B2315/10; B32B2419/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
116 words
A vibration-controlling member comprising: a top surface element, and a shock-absorbing and vibration-damping means backing said top surface element, said shock-absorbing and vibration-damping means including a flake-shaped powdery substance having a high flake diameter to thickness ratio providing shock-absorbing and vibration-damping action due to a grain boundary friction of the flake-shaped powdery substance and a retainer of a foamed body sheet of a polymeric material for enclosing therein said powdery substance and adhered to an inner surface of said top surface element, said foamed body sheet being formed of a water dispersion of an emulsion of said polymeric material, and said powdery substance and polymeric material being mixed at a weight ratio of 1:0.1 to 1.
Claim 2
Dependent Claim
116 words
A vibration-controlling member comprising: a top surface element, and a shock-absorbing and vibration-damping means backing said top surface element, said shock-absorbing and vibration-damping means including a flake-shaped powdery substance having a high flake diameter to thickness ratio providing shock-absorbing and vibration-damping action due to a grain boundary friction of the flake-shaped powdery substance and a retainer of a foamed body sheet of a polymeric material for enclosing therein said powdery substance and adhered to an inner surface of said top surface element, said foamed body sheet being formed of a water dispersion of an emulsion of said polymeric material, and said powdery substance and polymeric material being mixed at a weight ratio of 1:0.1 to 1.
Claim 3
Dependent Claim
14 words
A member according to claim 1 wherein said flake-shaped powdery substance is of mica.
Claim 4
Dependent Claim
19 words
A member according to claim 2 wherein said mica is of a grain size of 0.1 to 5.0 mm.
Claim 5
Dependent Claim
36 words
A member according to claim 1 which further comprises a bottom plate disposed to oppose said top surface element and to hold said shock-absorbing and vibration-damping means between said bottom plate and said top surface element.
References Cited (Backward Citations)
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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) | 1993-05-07 | 1993-11-06 | 1994-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-07 | 1997-11-06 | 1998-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-07 | 2001-11-06 | 2002-05-08 | $7700.00 | Window Closed / Lapsed |