Quotables
"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 7942116 | Double action piston assembly The double action piston assembly is for an internal combustion engine and has a combustion chamber that has a double action piston connected to one end of a central power rod disposed within the combustion chamber. A first intake air port and a first exhaust port a... | 05/17/2011 |
| 7428886 | Two-cycle engine and compressor An oscillating lever arm engine includes rigidly connected opposing pistons moved by a single lever connected to a rotating crankshaft. When applied to a two-cycle internal combustion engine, one piston may function as a pump piston and the second piston as a workin... | 09/30/2008 |
| 7334558 | Slide body internal combustion engine An internal combustion engine includes a slide body having a plurality of rigidly mounted pistons on opposite ends of the slide body. The slide body reciprocates and is connected to a flywheel by shaft and bearing which extends through an angled track in the slide b... | 02/26/2008 |
| 6796127 | One cycle internal combustion engine A one cycle internal combustion engine (10) configured for powering a vehicle (V) is disclosed. The engine (10) broadly includes an engine block (12) defining three cylinders (14, 16, and 18), three double-acting pistons (20,22,... | 09/28/2004 |
| 5816202 | High efficiency explosion engine with a double acting piston A high-efficiency explosion engine has a double-acting central piston mounted on a shaft within a cylinder to form two combustion chambers. Auxilliary pistons mounted on the ends of the shaft control the intake of gases to the combustion chambers. In one ... | 10/06/1998 |
| 5749337 | Barrel type internal combustion engine A barrel type engine with two-stroke cycle of operation. The engine of the present invention comprises two engine halves, each half having a plurality of pumping cylinders and a matching number of power cylinders. Double-ended pistons impart rotational mo... | 05/12/1998 |
| 5448972 | Internal combustion engine In an internal combustion engine comprising an engine block housing at least one reciprocating piston being provided in a cylinder comprising at least one inlet valve and an exhaust valve, which piston is coupled with a crankshaft being coupled with a dri... | 09/12/1995 |
| 4913100 | Double piston engine A double piston engine has a doubly acting piston reciprocably provided in a cylinder arrangement to form two working chambers which periodically increase and decrease their volumes. The invention provides inlet means with supply means for a cleaning flow... | 04/03/1990 |
| 4887558 | Internal-combustion engine having opposed integral annular pistons and a central shaft The invention relates to an internal-combustion engine having opposed integral annular pistons and a central shaft. The piston block (1), formed by the two pistons (2, 3) exhibits, at each axial end, an axial double skirt fitted with an outer crown (9) fo... | 12/19/1989 |
| 4449488 | Free piston internal combustion engine An internal combustion engine in which a rotor or turbine is driven by the exhaust gases of a pair of interconnected double-acting pistons. The double-acting pistons are interconnected by a pinion gear and are internally constructed to have an inner pisto... | 05/22/1984 |
| 4414927 | Two stroke oscillating piston engine A two stroke oscillating piston engine comprising cylinder sections provided with feed chambers for additional fresh air. The two outer rings, acting as pistons, draw in fresh air through intake ports and force that air to enter combustion chambers throug... | 11/15/1983 |
| 4385597 | Two-stroke internal combustion engine A two-stroke combustion engine is described which has a symmetrical, floating differential piston (14), having at least two main piston portions (16, 18), each movable in a combustion chamber (28, 30) formed with exhaust ports (46), and each connected to ... | 05/31/1983 |
| 4195613 | Double-acting four-cylinder hot gas engine Hot gas engine units of the type having four parallel cylinders arranged in two parallel rows of two cylinders per row may be effectively balanced by a minimum of counterweight masses. The engine pistons are connected to two parallel crank shafts and four... | 04/01/1980 |
