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US4452841A
Expired / Lapsed
US
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Unsupported shaped sound barrier component
Assignee: Organization World Intellectual Property
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Filing: 1982-12-20
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Granted: 1984-06-05
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Expires: 2002-12-20
Abstract
Abstract A shaped sound barrier component comprising a thermoplastic member highly loaded with barium sulfate (more than 200 to about 400 parts) and zinc oxide (1 to 500 parts). Preferably the thermoplastic contains 20 to 50 parts of chopped fibers per 100 parts of said thermoplastic although larger amounts can be used, for instance a 100 parts where the usage is severe.
Inventors
- 👤 Paul E. Oliveira
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:04
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/16; G10K11/162; G10K11/165; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24628; Y10T428/24736
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
59 words
An unsupported shaped sound barrier component having a thickness of 0.0076 to 1.72 centimeters consisting essentially of on a weight basis 100 parts of a thermoplastic loaded with more than 200 parts up to about 400 parts of barium sulfate and 1 to 500 parts of zinc oxide per 100 of thermoplastic, said component being at least partially cured.
Claim 2
Dependent Claim
59 words
An unsupported shaped sound barrier component having a thickness of 0.0076 to 1.72 centimeters consisting essentially of on a weight basis 100 parts of a thermoplastic loaded with more than 200 parts up to about 400 parts of barium sulfate and 1 to 500 parts of zinc oxide per 100 of thermoplastic, said component being at least partially cured.
Claim 3
Dependent Claim
14 words
The sound barrier component of claim 1 wherein the thermoplastic is a chlorinated polyethylene.
Claim 4
Dependent Claim
15 words
The component of claim 1 wherein the component has a design pressed into its surface.
Claim 5
Dependent Claim
17 words
The component of claim 1 having incorporated in the thermoplastic chopped fibers from 0.32 to several centimeters.
Claim 6
Dependent Claim
22 words
The component of claim 4 wherein about 20 to about 50 parts of chopped fibers per 100 parts of thermoplastic is used.
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) | 1987-06-05 | 1987-12-05 | 1988-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-05 | 1991-12-05 | 1992-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-05 | 1995-12-05 | 1996-06-05 | $7700.00 | Window Closed / Lapsed |