Patent US3623942A successfully refreshed from Google Patents.
US3623942A
Expired / Lapsed
US
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Method of damping vibration and article
Assignee: Dow Silicones Corp
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Filing: 1970-07-09
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Granted: 1971-11-30
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Expires: 1990-07-09
Abstract
Abstract The vibration of two interacting members are dampened by interposing between the two members by an elastomer which is prepared by milling 100 parts by weight of a polydiorganosiloxane gum containing phenyl radicals, 40 to 70 parts by weight of a reinforcing silica filler, CH3(C6H5)2SiNHX where X is a hydrogen atom or -Si(C6H5)2CH3 and from 0.1 to 5 parts by weight of an organic peroxide and heating the milled mixture above 100* C. until a cured elastomer is obtained. The articles prepared by the method have the vibration dampened.
Inventors
- 👤 Kenneth B Yerrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:27
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/006; C; C08; C08L; C08L83/00; C08L83/04; F16F1/00; F16F1/36; F16F1/3605; C08G; C08G77/00; C08G77/04; C08G77/14; C08G77/16; C08G77/20; C08G77/70; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24025; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
175 words
An article of manufacture comprising at least two rigid members one of which is movable, said members having interposed therebetween an elastomer prepared by mixing 100 parts by weight of a polydiorganosiloxane gum having a unit formula of R2SiO where R is selected from the group consisting of methyl, phenyl and vinyl radicals, said units are bonded to one another through silicon-oxygen-silicon bonds, from 2 to 50 percent of the R groups of said polydiorganosiloxane being vinyl, said polydiorganosiloxane having endblocking units selected from the group consisting of hydroxyl radicals and R3SiO0.5 units, from 40 to 70 parts by weight of a reinforcing silica filler and a silicon compound of the formula CH3(C6H5)2SiNHX where X is selected from the group consisting of a hydrogen atom and -Si(C6H5)2CH3 in an amount sufficient to provide a weight ratio of silica filler to silicon compound of from 2 to 4.5 inclusive, and from 0.1 to 5 parts by weight of an organic peroxide and thereafter heating the milled mixture above 100* C. until a cured elastomer is obtained.
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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) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |