Patent US3786790A successfully refreshed from Google Patents.
US3786790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double-chambered reciprocatable double-action-piston internal combustion engine
Assignee: Individual
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Filing: 1972-08-03
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Granted: 1974-01-22
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Expires: 1992-08-03
Abstract
Abstract An internal combustion engine having two piston chambers in series with interconnected pistons for synchronous reciprocating motion, the combustion-expansion cycle of one cylinder serving to return the other piston to the fuel-compression state, there being an intermediate compression and ignition chamber between the opposing piston cylinders and pistons with a valve means mounted within the piston cylinder such as a spherical ball movable between and sealable alternately of opposite-end openings of the ignition chamber opening into the opposing piston cylinders and the movement of the spherical ball valve being dependent upon return-movement of the piston bringing about compression of gases adjacent the ball thereby forcing the ball out of the vent toward the distant end of the ignition cylinder away from the approaching piston, to seal the far end of the ignition chamber, whereby as the approaching piston continues to approach and finally to become substantially flush with the piston chamber, gases within the space adjacent the approaching piston and compressed within the ignition chamber prior to ignition by a spark plug or other ignition mechanism within the ignition chamber.
Inventors
- 👤 J Plevyak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:52
CPC Classifications
F; F01; F01B; F01B3/00; F01B3/0079; F01B3/04; F01B3/06; F02; F02B; F02B75/00; F02B75/28; F02B1/00; F02B1/02; F02B1/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
144 words
An internal combustion engine device comprising in combination: a structure defining two consecutive piston cells in series with one another separated by a common ignition chamber having opposite outlets into each of the opposing piston chambers; a valve means for closing one of said outlets while opening the other and for closing the other of said outlets while opening said one outlet alternatively; an ignition means mounted within said ignition chamber; a first piston mounted in one of the two piston chambers and a second piston mounted in the second of said piston chambers; their being a through aperture between a first of said piston chambers and the second of said piston chambers through the separating ignition means; interconnecting rigid structure connecting the first and second pistons together for common synchronized reciprocating motion; and each chamber having a fuel inlet and an exhaust outlet.
Claim 2
Dependent Claim
144 words
An internal combustion engine device comprising in combination: a structure defining two consecutive piston cells in series with one another separated by a common ignition chamber having opposite outlets into each of the opposing piston chambers; a valve means for closing one of said outlets while opening the other and for closing the other of said outlets while opening said one outlet alternatively; an ignition means mounted within said ignition chamber; a first piston mounted in one of the two piston chambers and a second piston mounted in the second of said piston chambers; their being a through aperture between a first of said piston chambers and the second of said piston chambers through the separating ignition means; interconnecting rigid structure connecting the first and second pistons together for common synchronized reciprocating motion; and each chamber having a fuel inlet and an exhaust outlet.
Claim 3
Dependent Claim
69 words
A device of claim 1, in which said valve comprises a spherical ball-valve seatable alternately in each of said ignition chamber outlets, said ignition chamber being structured such that said ball-valve is movable from one of the outlets to the other outlet of the ignition chamber and from the other outlet to the one outlet responsive to pressure of compressed gases upon movement of a piston toward said ball-valve.
Claim 4
Dependent Claim
26 words
A device of claim 2, in which said ignition means includes a spark plug arranged to be ignitible of compressed fuel mixture within said ignition chamber.
Claim 5
Dependent Claim
22 words
A device of claim 3, including a drive shaft means for transmitting motion of said pistons when reciprocating to a motion-utilization means.
Claim 6
Dependent Claim
23 words
A device of claim 4, including a motion-conversion means for converting reciprocal motion of said pistons to rotary motion of said drive shaft.
Claim 7
Dependent Claim
25 words
A device of claim 5, in which each of said piston chambers includes additionally a compressed gas outlet in addition to said exhaust fas outlet.
Claim 8
Dependent Claim
89 words
A device of claim 6, including conduits interconnecting said compressed gas outlet with an air-fuel carburetor, together with valve means for permitting intake of air and for directing compressed air to the carburetor, and for permitting the escape of excessive pressure from the closed conduit system, and for directing a predetermined amount of compressed air to a venturi system facilitatable of movement of gases through the carburetor, and for recycling a predetermined precentage of exhaust gases through said carburetor in admixture with compressed gases being passed through the carburetor.
Claim 9
Dependent Claim
29 words
A device of claim 7, including a flip valve means alternately feeding fuel mixture from the carburetor to the first and then the second of the two piston chambers.
Claim 10
Dependent Claim
74 words
A device of claim 8, in which movement of said pistons toward said ignition chamber is compressible of fuel-mixture gases within the respective piston chamber, is by virtue of the compressed gases causative of the ball-valve to move away from the approaching piston and to seal the outlet of the ignition chamber away from the approaching piston, and is compressible of the fuel-mixture within said ignition chamber between the approaching piston and the ball-valve.
Claim 11
Dependent Claim
33 words
A device of claim 4, in which said drive shaft is attached fixedly to said first and second pistons and is slidably axially movable in reciproCating motion by reciprocating movement of the pistons.
Claim 12
Dependent Claim
49 words
A device of claim 5, including toothed circular gears and rotary valve means for timed feeding of fuel to said combustion chamber for exhausting residual combustion gases from the combustion chamber, said circular gears being operatively mounted for imparting rotary motion of said shaft to said rotary valve means.
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) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |