Patent US4322950A successfully refreshed from Google Patents.
US4322950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined internal combustion and steam engine
Assignee: Individual
•
Filing: 1980-09-22
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Granted: 1982-04-06
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Expires: 2000-09-22
Abstract
Abstract My invention relates to internal combustion engines that are intermittently operated as steam engines with the changeover from one phase to the other controlled by the heat of the metal of the engine in the region of the combustion.
Inventors
- 👤 Marshall P. Jepsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:21
CPC Classifications
F; F01; F01K; F01K21/00; F01K21/02; F01B; F01B29/00; F01B29/08; F01B29/10; F01B29/12; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
131 words
An internal combustion engine that operates on alternating internal combustion and steam phases comprising: (a) metal defining a combustion chamber and a working chamber. (b) a piston reciprocable within the working chamber; (c) means for introducing fuel into the combustion chamber; (d) means for introducing water into the combustion chamber; (e) means for selectively actuating the fuel-introducing means or the water-introducing means; (f) and a sensor for sensing the heat of the metal and connected to the selectively actuating means to actuate either the water-introducing means or the fuel-introducing means, whereby the engine may be operated automatically as a steam engine when the heat of the metal exceeds a predetermined temperature and may be operated as an internal combustion engine when the temperature of the metal is below a preselected minimum.
Claim 2
Dependent Claim
131 words
An internal combustion engine that operates on alternating internal combustion and steam phases comprising: (a) metal defining a combustion chamber and a working chamber. (b) a piston reciprocable within the working chamber; (c) means for introducing fuel into the combustion chamber; (d) means for introducing water into the combustion chamber; (e) means for selectively actuating the fuel-introducing means or the water-introducing means; (f) and a sensor for sensing the heat of the metal and connected to the selectively actuating means to actuate either the water-introducing means or the fuel-introducing means, whereby the engine may be operated automatically as a steam engine when the heat of the metal exceeds a predetermined temperature and may be operated as an internal combustion engine when the temperature of the metal is below a preselected minimum.
Claim 3
Dependent Claim
38 words
An engine as set forth in claim 1 wherein the engine is a two cycle engine and there are provided means for timing the water introduction on every stroke of the piston during the steam phase of operation.
Claim 4
Dependent Claim
38 words
An engine as set forth in claim 1 wherein the engine is a four-cycle engine and there are provided means for timing the water introduction on every other stroke of the piston during the steam phase of operation.
Claim 5
Dependent Claim
25 words
An engine as set forth in claim 1 wherein the water is introduced into the combustion chamber and the upper part of the working chamber.
Claim 6
Dependent Claim
17 words
An engine as set forth in claim 1 wherein the water is introduced into the combustion chamber.
References Cited (Backward Citations)
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US1711937A
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US1782642A
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US2001577A
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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) | 1985-04-05 | 1985-10-05 | 1986-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-05 | 1989-10-05 | 1990-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-05 | 1993-10-05 | 1994-04-06 | $7700.00 | Window Closed / Lapsed |