US3604204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Counterpiston machine, especially counterpiston motor
Assignee: Fried Krupp AG
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Filing: 1970-03-18
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Granted: 1971-09-14
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Expires: 1990-03-18
Abstract
Abstract A counterpiston machine, preferably counterpiston motor, in which at least two displacement pistons are, by pull rods and a transverse yoke, connected with a counterpiston, and in which the liquid columns acted upon by said counterpistons communicate with a chamber in which these columns act upon the annular surface of a piston connected to a piston rod with another counterpiston which latter is formed by a crosshead or is connected thereto.
Inventors
- 👤 Hans-Joachim Conrad
- 👤 Peter Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:54
CPC Classifications
F; F02; F02B; F02B75/00; F02B75/28; F01; F01B; F01B7/00; F01B7/02; F01B7/04; F01B7/06; F01B7/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
309 words
A counterpiston machine, especially counterpiston motor, which includes: first cylinder means having inlet means for a fuel gas mixture and also having outlet means for the exhaust gases, counter running first and second piston means reciprocable in said first cylinder means and operable to compress a fuel gas mixture therebetween prior to the ignition thereof and to exhaust the combustion gases from therebetween after effected ignition, hydraulic chamber means adapted to be filled with hydraulic fluid and comprising second cylinder means and third cylinder means, crosshead piston means reciprocably guided by said second cylinder means and reciprocably connected to said first counter piston means, one side of said crosshead piston means forming a movable wall portion of said hydraulic chamber means, at least two displacement pistons reciprocable in said third cylinder means and forming movable wall portions of said hydraulic chamber means, the total displacement of said movable wall portions formed by said displacement pistons substantially equaling the displacement of said movable wall portion formed by said crosshead piston means, yoke means connected to said second piston means, and pull rod means operatively connected to said yoke means and said displacement piston means and operable in response to a movement of said counter running first and second piston means toward each other to cause said displacement pistons to convey fluid from said third cylinder means to said crosshead piston means in a quantity substantially equaling the simultaneous displacement of said one side of said crosshead piston means which forms a movable wall portion of said hydraulic chamber means, said crosshead piston means being operable in response to said counter running pistons moving away from each other to convey fluid from said second cylinder piston means to said displacement pistons in a quantity substantially equaling the total simultaneously effective displacement of said movable wall portions formed by said displacement pistons.
Claim 2
Dependent Claim
309 words
A counterpiston machine, especially counterpiston motor, which includes: first cylinder means having inlet means for a fuel gas mixture and also having outlet means for the exhaust gases, counter running first and second piston means reciprocable in said first cylinder means and operable to compress a fuel gas mixture therebetween prior to the ignition thereof and to exhaust the combustion gases from therebetween after effected ignition, hydraulic chamber means adapted to be filled with hydraulic fluid and comprising second cylinder means and third cylinder means, crosshead piston means reciprocably guided by said second cylinder means and reciprocably connected to said first counter piston means, one side of said crosshead piston means forming a movable wall portion of said hydraulic chamber means, at least two displacement pistons reciprocable in said third cylinder means and forming movable wall portions of said hydraulic chamber means, the total displacement of said movable wall portions formed by said displacement pistons substantially equaling the displacement of said movable wall portion formed by said crosshead piston means, yoke means connected to said second piston means, and pull rod means operatively connected to said yoke means and said displacement piston means and operable in response to a movement of said counter running first and second piston means toward each other to cause said displacement pistons to convey fluid from said third cylinder means to said crosshead piston means in a quantity substantially equaling the simultaneous displacement of said one side of said crosshead piston means which forms a movable wall portion of said hydraulic chamber means, said crosshead piston means being operable in response to said counter running pistons moving away from each other to convey fluid from said second cylinder piston means to said displacement pistons in a quantity substantially equaling the total simultaneously effective displacement of said movable wall portions formed by said displacement pistons.
Claim 3
Dependent Claim
32 words
A machine according to claim 1, in which said third cylinder means comprise elastic buffer means located at that side of said displacement pistons which face away from said hydraulic chamber means.
Claim 4
Dependent Claim
32 words
A machine according to claim 1, which includes means for varying the filling of said hydraulic chamber means to thereby vary the dead center position of said first counter running piston means.
Claim 5
Dependent Claim
48 words
A machine according to claim 1, which includes crank drive means comprising connecting rod means pivotally connected to said crosshead piston means, said crank drive means including conduit means establishing communication between load receiving areas of said crank drive means and the interior of said hydraulic chamber 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) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |