Patent US4340129A successfully refreshed from Google Patents.
US4340129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustical laminate construction and attenuated systems comprising same
Assignee: Cabot Safety Intermediate LLC
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Filing: 1980-05-01
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Granted: 1982-07-20
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Expires: 2000-05-01
Abstract
Abstract Disclosed herein is a flexible acoustical laminate construction which can be applied to noisy enclosures in order to attenuate noise therein. The construction of the invention finds particular use as a cabliner for the cabs or crew compartments of heavy construction, industrial, mining and transportation equipment of various types.
Inventors
- 👤 Edward F. Salyers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:40
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/18; B32B3/00; B32B3/26; B32B3/30; E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; E04B1/8409; G; G10; G10K; G10K11/00; G10K11/16; G10K11/162; G10K11/168; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0221; B32B2266/0235; B32B2307/00; B32B2307/10; E04B2001/8457; E04B2001/8461; E04B2001/8476; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/249921; Y10T428/249953; Y10T428/249981; Y10T428/249987; Y10T428/249991; Y10T428/249992
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
100 words
An acoustic laminate construction comprising: (A) a first lamina having a thickness of at least 0.2 inch and being composed of an energy-absorbing flexible polymeric foam composition, said lamina having a loss factor, η, of at least 0.4 at 25° C. and 100 Hz excitation frequency: (B) a second lamina composed of a flexible polymeric weighted composition, said second lamina having a surface density of at least about 0.5 lb/ft 2 , said second lamina being of substantially less thickness than said first lamina; the natural resonant frequency of the overall laminate construction being no greater than about 1000 Hz.
Claim 2
Dependent Claim
100 words
An acoustic laminate construction comprising: (A) a first lamina having a thickness of at least 0.2 inch and being composed of an energy-absorbing flexible polymeric foam composition, said lamina having a loss factor, η, of at least 0.4 at 25° C. and 100 Hz excitation frequency: (B) a second lamina composed of a flexible polymeric weighted composition, said second lamina having a surface density of at least about 0.5 lb/ft 2 , said second lamina being of substantially less thickness than said first lamina; the natural resonant frequency of the overall laminate construction being no greater than about 1000 Hz.
Claim 3
Dependent Claim
13 words
The acoustic laminate construction of claim 1 wherein η is at least 0.6.
Claim 4
Dependent Claim
22 words
The acoustic laminate construction of claim 1 wherein the natural resonant frequency of said construction is no greater than about 500 Hz.
Claim 5
Dependent Claim
55 words
The acoustic laminate construction of claim 1 wherein said first polymeric foam lamina comprises a first sub-lamina and a second sub-lamina, said first sub-lamina having a plurality of essentially uniformly distributed apertures through the thickness thereof and said second sub-lamina being substantially continuous and having a loss factor similar to that of said first sub-lamina.
Claim 6
Dependent Claim
31 words
The acoustic laminate construction of claim 4 wherein the surface defined by the aggregate of said plurality of apertures of said first sub-lamina is about 50% of the total surface thereof.
Claim 7
Dependent Claim
21 words
The acoustic laminate construction of claim 4 wherein each of said sub-lamina is composed of a highly plasticized polyvinylchloride foam material.
Claim 8
Dependent Claim
20 words
The acoustic laminate construction of claim 1 wherein said first lamina is composed of a highly plasticized polyvinylchloride foam material.
Claim 9
Dependent Claim
23 words
The acoustic laminate construction of claim 1 wherein the surface density of said second lamina is at least about 1.0 lb/ft 2 .
Claim 10
Dependent Claim
25 words
The acoustic laminate construction of claim 1 wherein said second lamina is composed of polyvinylchloride having a substantial quantity of barium sulfate filler dispersed therein.
Claim 11
Dependent Claim
25 words
A sound attenuated enclosure comprising an enclosure having bonded to the surface thereof the acoustic laminate construction of any of claims 1 through 9, inclusive.
Claim 12
Dependent Claim
48 words
A sound attenuated cab or enclosure for heavy industrial, mining, construction or vehicular equipment comprising a cab or enclosure adapted to enclose one or more equipment operators therein and, bonded to the surface of said cab, the acoustic laminate construction of any of claims 1 through 9, inclusive.
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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) | 1985-07-19 | 1986-01-18 | 1986-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-19 | 1990-01-18 | 1990-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-19 | 1994-01-18 | 1994-07-20 | $7700.00 | Window Closed / Lapsed |