US4179883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reed valve assembly
Assignee: Nok Corp
•
Filing: 1977-03-14
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Granted: 1979-12-25
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Expires: 1997-03-14
Abstract
Abstract A reed valve assembly in which a gummous material coating is applied to the noise-propagating passageway of a secondary-air exhaust gas recombustion system for internal combustion engines.
Inventors
- 👤 Takahiko Nishiyama
- 👤 Kenji Haga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:29
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/30; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/7888; Y10T137/7891; Y10T137/7892
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
In a secondary-air exhaust gas recombustion system for internal combustion engines having noise-propagating passageways, a reed valve assembly comprising, a reed valve case having a secondary-air supply port and a secondary-air outflow passage, a valve seat surrounding said secondary-air supply port, a reed secured in said reed valve case covering said valve seat, a secondary-air supply means from said secondary air outflow passage to an exhaust gas recombustion means, and a coating of gummous material applied to the interior surface of the noise-propagating passageways including said reed valve case, said coating of gummous material being applied by the steps comprising, spreading an adhesive on the interior surface, applying a large number of short fibers to the adhesive-spread surfaces, and spraying the gummous coating material onto the fiber layer.
Claim 2
Dependent Claim
128 words
In a secondary-air exhaust gas recombustion system for internal combustion engines having noise-propagating passageways, a reed valve assembly comprising, a reed valve case having a secondary-air supply port and a secondary-air outflow passage, a valve seat surrounding said secondary-air supply port, a reed secured in said reed valve case covering said valve seat, a secondary-air supply means from said secondary air outflow passage to an exhaust gas recombustion means, and a coating of gummous material applied to the interior surface of the noise-propagating passageways including said reed valve case, said coating of gummous material being applied by the steps comprising, spreading an adhesive on the interior surface, applying a large number of short fibers to the adhesive-spread surfaces, and spraying the gummous coating material onto the fiber layer.
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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) | 1982-12-24 | 1983-06-25 | 1983-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-24 | 1987-06-25 | 1987-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-24 | 1991-06-25 | 1991-12-25 | $7700.00 | Window Closed / Lapsed |