Patent US3173408A successfully refreshed from Google Patents.
US3173408A
Expired / Lapsed
US
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Method and apparatus for injecting auxiliary liquids into intake system of internal combustion engine
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1963-03-19
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Granted: 1965-03-16
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Expires: 1983-03-19
Abstract
No abstract record available.
Inventors
- 👤 Albert E Brenneman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:22
CPC Classifications
F; F02; F02B; F02B77/00; F02B77/04; F01; F01M; F01M13/00; F01M13/02; F02M; F02M25/00; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4245; Y10T137/4259
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A METHOD OF INHIBITING DEPOSIT FORMATION WITHIN A POSITVE CRANKCASE VENT VALVE, SAID METHOD COMPRISING AUTOMATICALLY INJECTING A SMALL PORTION OF A CLEANING LIQUID INTO SAID VALVE, SAID INJECTING OCCURRING IN RESPONSE TO AN INCREASE IN MANIFOLD PRESSURE.
Claim 2
Independent Claim
38 words
A METHOD OF INHIBITING DEPOSIT FORMATION WITHIN A POSITVE CRANKCASE VENT VALVE, SAID METHOD COMPRISING AUTOMATICALLY INJECTING A SMALL PORTION OF A CLEANING LIQUID INTO SAID VALVE, SAID INJECTING OCCURRING IN RESPONSE TO AN INCREASE IN MANIFOLD PRESSURE.
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) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |