Patent US3735743A successfully refreshed from Google Patents.
US3735743A
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US
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Apparatus for adjusting the ignition timing for use in internal combustion engines
Assignee: Mitsubishi Motors Corp
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Filing: 1970-12-21
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Granted: 1973-05-29
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Expires: 1990-12-21
Abstract
Abstract An apparatus for adjusting the ignition timing for use in internal combustion engines having a conventional vacuum ignition advancer, the apparatus retarding or slowing down the action of said vacuum ignition advancer upon the occurrence of the negative pressure at the throttle valve of the carburetor, thereby giving hysteresis loop characteristics in the negative pressure-ignition timing relation.
Inventors
- 👤 T Shimizu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:23
CPC Classifications
F; F02; F02P; F02P5/00; F02P5/04; F02P5/05; F02P5/10; F02P5/103; F02B; F02B1/00; F02B1/02; F02B1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
Apparatus for adjusting the ignition timing of an internal combustion engine having a vacuum ignition timing advancer that is mechanically operatively connected to an element of the distributor of the engine, comprising a separately housed dash pot provided with a diaphragm having a one-way valve and a leak hole therein; mechanically operatively connected to the said element of the distributor by a mechanical linkage assembly for opposing the action of the vacuum ignition advancer in the advancing direction while not opposing the operation of the vacuum ignition advancer in the retarding direction.
Claim 2
Dependent Claim
92 words
Apparatus for adjusting the ignition timing of an internal combustion engine having a vacuum ignition timing advancer that is mechanically operatively connected to an element of the distributor of the engine, comprising a separately housed dash pot provided with a diaphragm having a one-way valve and a leak hole therein; mechanically operatively connected to the said element of the distributor by a mechanical linkage assembly for opposing the action of the vacuum ignition advancer in the advancing direction while not opposing the operation of the vacuum ignition advancer in the retarding direction.
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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) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |