US3973530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine
Assignee: Individual
•
Filing: 1974-12-23
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Granted: 1976-08-10
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Expires: 1994-12-23
Abstract
Abstract The invention is related to an internal combustion engine, the combustion chamber of which is divided into two partial chambers or two groups of partial chambers by at least one perforated separation wall to one of these chambers or groups of chambers, hereafter called an ignition chamber, which includes an ignition device, a rich mixture is admitted via an intake valve and to the other of which, hereafter called a second combustion chamber, a lean mixture or air is admitted via another intake valve.
Inventors
- 👤 Hans H. Seidel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:48
CPC Classifications
F; F02; F02B; F02B19/00; F02B19/10; F02B19/1095; F02B19/02; F02B19/1004; F02B19/1014; F02B1/00; F02B1/02; F02B1/04; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
153 words
In an internal combustion engine, the combination comprising a combustion chamber, a head closing one end of said chamber, a piston movable in said chamber toward and away from said head, at least one wall fixed in said chamber at said one end thereof extending longitudinally of piston movement and subdividing the chamber into rich and lean partial chambers, said wall having through holes for directing through passage of fluid between said partial chambers, said head having a head recess opening substantially throughout its extent into said rich partial chamber without appreciable restriction, a rich inlet valve in said head opening through said head recess into said rich partial chamber, a separate lean inlet valve in said head and opening into said lean partial chamber, and ignition means in said rich partial chamber, and said piston having a recess for entry and exit of said wall throughout a considerable extent of piston movement.
Claim 2
Dependent Claim
153 words
In an internal combustion engine, the combination comprising a combustion chamber, a head closing one end of said chamber, a piston movable in said chamber toward and away from said head, at least one wall fixed in said chamber at said one end thereof extending longitudinally of piston movement and subdividing the chamber into rich and lean partial chambers, said wall having through holes for directing through passage of fluid between said partial chambers, said head having a head recess opening substantially throughout its extent into said rich partial chamber without appreciable restriction, a rich inlet valve in said head opening through said head recess into said rich partial chamber, a separate lean inlet valve in said head and opening into said lean partial chamber, and ignition means in said rich partial chamber, and said piston having a recess for entry and exit of said wall throughout a considerable extent of piston movement.
Claim 3
Dependent Claim
21 words
An internal combustion engine according to claim 1, said lean partial chamber defining approximately 30-40% by volume of said combustion chamber.
Claim 4
Dependent Claim
28 words
An internal combustion engine according to claim 2, said combustion chamber being generally cylindrical, and said lean partial chamber being generally annular and surrounding said rich partial chamber.
Claim 5
Dependent Claim
33 words
An internal combustion engine according to claim 2, in combination with at least another wall, said one and other walls being spaced from each other angularly about the axis of said combustion chamber.
Claim 6
Dependent Claim
12 words
An internal combustion engine according to claim 4, said walls being curved.
Claim 7
Dependent Claim
13 words
An internal combustion engine according to claim 1, said through holes being tapered.
Claim 8
Dependent Claim
22 words
An internal combustion engine according to claim 1, said holes being arranged to direct fluid angularly with respect to said combustion chamber.
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) | 1979-08-10 | 1980-02-09 | 1980-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-10 | 1984-02-09 | 1984-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-10 | 1988-02-09 | 1988-08-10 | $7700.00 | Window Closed / Lapsed |