US3896775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supercharged six-stroke cycle combustion engine
Assignee: Individual
•
Filing: 1974-08-21
•
Granted: 1975-07-29
•
Expires: 1994-08-21
Abstract
Abstract A multi-cylinder reciprocating piston internal combustion engine is provided including a combustion chamber for each cylinder and two pairs of cam shaft actuated intake and exhaust valves control the flow of gases into and out of each combustion chamber. Fresh air is first inducted from a fresh air intake through a first intake valve, compressed and then exhausted through a first exhaust valve into a carburetted second intake in a manner to at least somewhat pressurize the downstream end of the carburetted intake from which air and fuel is then inducted through the second intake valve. The air and fuel mixture is then compressed and ignited in the combustion chamber and thereafter exhausted through the second exhaust valve.
Inventors
- 👤 Raymond C Melby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:38
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/24; F02F1/42; F02F1/4214; F02B; F02B75/00; F02B75/02; F02B75/021; F02F2001/244; F02F2001/247
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
184 words
In combination with an engine including a cylinder, a piston reciprocal in said cylinder, primary induction passage means including charge forming means operative to admit measured quantities of liquid fuel with air inducted through said primary induction passage means, primary exhaust passage means, secondary air induction passage means and secondary exhaust passage means, said engine further including means operative to (1) seal said cylinder from all of said passage means during a first stroke of said engine, (2) communicate said cylinder with said primary exhaust passage means during the second stroke of said piston, (3) communicate said cylinder with said secondary induction passage means during the third stroke of said piston, (4) communicate said cylinder with said secondary exhaust passage means during the fourth stroke of said piston, (5) communicate said cylinder with said primary induction passage means during the fifth stroke of said piston and (6) seal said cylInder from all of said passage means during the sixth stroke of said piston, said secondary exhaust passage means including jet-type outlet means therefor opening into said primary induction passage means in a downstream direction.
Claim 2
Dependent Claim
184 words
In combination with an engine including a cylinder, a piston reciprocal in said cylinder, primary induction passage means including charge forming means operative to admit measured quantities of liquid fuel with air inducted through said primary induction passage means, primary exhaust passage means, secondary air induction passage means and secondary exhaust passage means, said engine further including means operative to (1) seal said cylinder from all of said passage means during a first stroke of said engine, (2) communicate said cylinder with said primary exhaust passage means during the second stroke of said piston, (3) communicate said cylinder with said secondary induction passage means during the third stroke of said piston, (4) communicate said cylinder with said secondary exhaust passage means during the fourth stroke of said piston, (5) communicate said cylinder with said primary induction passage means during the fifth stroke of said piston and (6) seal said cylInder from all of said passage means during the sixth stroke of said piston, said secondary exhaust passage means including jet-type outlet means therefor opening into said primary induction passage means in a downstream direction.
Claim 3
Dependent Claim
34 words
The combination of claim 1 wherein said charge forming means includes an induction air inlet portion and said jet-type outlet means includes at least one jet outlet opening into said induction air inlet portion.
Claim 4
Dependent Claim
29 words
The combination of claim 2 wherein said jet-type outlet means also includes a second jet outlet opening into said primary induction passage means downstream from said charge forming means.
Claim 5
Dependent Claim
37 words
The combination of claim 3 wherein said secondary exhaust passage means includes means operative to at least substantially block all flow of air entering said secondary exhaust passage means from said cylinder to said one jet outlet.
Claim 6
Dependent Claim
13 words
The combination of claim 1 wherein said charge forming means comprises a carburetor.
Claim 7
Dependent Claim
23 words
The combination of claim 1 whereais said means (1) (3), (4) and (5) include separately operable valves in operative association with said cylinder.
Claim 8
Dependent Claim
27 words
The combination of claim 6 wherein said engine includes a cylinder head closing one end of said cylinder from which all of said valves are shiftably supported.
Claim 9
Dependent Claim
11 words
The combination of claim 7 wherein said valves comprise poppet valves.
References Cited (Backward Citations)
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US2295619A
Cited
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |