Patent US4461796A successfully refreshed from Google Patents.
US4461796A
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US
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Sound damping materials
Assignee: Bridgestone Corp
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Filing: 1983-07-05
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Granted: 1984-07-24
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Expires: 2003-07-05
Abstract
Abstract A sound damping material is disclosed, which is a composite structural body comprising honeycomb or corrugated core, plain sheet and pressure sensitive adhesive layer, a height direction of the honeycomb or corrugated core being perpendicular to a surface of a vibrating body. In this sound damping material, one pressure sensitive adhesive layer is at least existent between the honeycomb or corrugated cores or between the honeycomb or corrugated core and the plain sheet.
Inventors
- 👤 Yoshihide Fukahori
- 👤 Yasuhiro Morimura
- 👤 Ryota Fujio
- 👤 Yukio Fukuura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:42
CPC Classifications
B; B32; B32B; B32B3/00; B32B3/10; B32B3/12; B29; B29D; B29D24/00; B29D24/002; B29D24/005; B32B15/00; B32B15/04; B32B15/12; B32B3/26; B32B3/28; B32B7/00; B32B7/04; B32B7/12; F; F16; F16F; F16F1/00; F16F1/36; G; G10; G10K; G10K11/00; G10K11/16; G10K11/172; B32B2305/00; B32B2305/02; B32B2305/024; B32B2307/00; B32B2307/10; B32B2307/102; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24157
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
90 words
A sound damping material comprising; a composite structural body of a honeycomb or corrugated core, a plane sheet and a pressure sensitive adhesive layer, a height direction of said honeycomb or corrugated core being perpendicular to a surface of a vibrating body, and said at least one pressure sensitive adhesive layer being existent between said honeycomb or corrugated cores or between said honeycomb or corrugated core and said plane sheet and having a dynamic shearing storage modulus of 1×10 3 ˜1×10 7 dyn/cm 2 at 25° C. and 15 Hz.
Claim 2
Dependent Claim
90 words
A sound damping material comprising; a composite structural body of a honeycomb or corrugated core, a plane sheet and a pressure sensitive adhesive layer, a height direction of said honeycomb or corrugated core being perpendicular to a surface of a vibrating body, and said at least one pressure sensitive adhesive layer being existent between said honeycomb or corrugated cores or between said honeycomb or corrugated core and said plane sheet and having a dynamic shearing storage modulus of 1×10 3 ˜1×10 7 dyn/cm 2 at 25° C. and 15 Hz.
Claim 3
Dependent Claim
19 words
A sound damping material according to claim 1, wherein said honeycomb core has a cell size of 1˜100 mm.
Claim 4
Dependent Claim
21 words
A sound damping material according to claim 1, wherein said honeycomb core has a height of not less than 1 mm.
Claim 5
Dependent Claim
18 words
A sound damping material according to claim 1, wherein said corrugated core has a height of 1˜100 mm.
Claim 6
Dependent Claim
19 words
A sound damping material according to claim 1, wherein the number of ridges in said corrugated core is 30˜500/m.
Claim 7
Dependent Claim
24 words
A sound damping material according to claim 1, wherein a weight ratio of said plain sheet to said honeycomb or corrugated core is 1/30˜100.
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) | 1987-07-24 | 1988-01-23 | 1988-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-24 | 1992-01-23 | 1992-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-24 | 1996-01-23 | 1996-07-24 | $7700.00 | Window Closed / Lapsed |