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| Number | Title | Issue Date |
| 7392737 | Dynamic system for refrigeration equipment This is a dynamic system for refrigeration equipment. This invention provides special features, including a set of mechanisms, electro-mechanisms, and electronic controls for refrigeration compression chambers or other kinds of fluids that employ two, three, or four... | 07/01/2008 |
| 7135785 | Generator unit for tractors and electrical drive system for agricultural devices A generator unit for tractors (1) has a housing (4), which can be non-rotationally mounted on a component of the tractor (1). An input shaft is rotationally supported in the housing (4) and connectable to a power take-off shaft (2)... | 11/14/2006 |
| 7047916 | Two-stroke internal combustion engine with free opposed pistons A two-stroke internal combustion engine comprises a first cylinder and a second cylinder arranged on a common axis. A first piston pair comprises a first piston and a second piston located in the first cylinder and defining a first combustion chamber. The first pist... | 05/23/2006 |
| 4678407 | Multi-tandem free piston machine A free piston machine comprising a mounting, an inner movable mechanism comprising a central cross-member and guided in translation so as to be able to move with an alternating motion along the axis of the mounting and an outer movable mechanism comprisin... | 07/07/1987 |
| 4561256 | External combustion engine This disclosure relates to an external combustion engine including an engine housing forming at least one pair of opposed cylinders, a piston mounted for reciprocating motion in each cylinder, a rotatable power output shaft mounted between the pistons, an... | 12/31/1985 |
| 4412476 | Tandem machine with opposed free pistons An opposed free piston tandem machine includes at least two drive piston-cylinder groups A and B and compressor cylinders and movable parts of this machine constitute two trains. The compressor cylinders of the outer movable train are arranged outside cro... | 11/01/1983 |
| 4382748 | Opposed piston type free piston engine pump unit A free piston engine pump (FPEP) converts combustion energy into hydraulic power in an efficient, controlled and relatively uncomplicated manner, for example, for vehicle propulsion, auxiliary system power, etc. The FPEP is substantially naturally mass ba... | 05/10/1983 |
| 4273261 | Metering apparatus Apparatus for metering material and transferring it from one location is provided. The new metering apparatus has several advantages over that disclosed in my U.S. Pat. No. 4,118,799. The apparatus includes a pair of cylinders with rams which are reciproc... | 06/16/1981 |
| 4115037 | Opposed piston internal combustion engine-driven pump An engine driven reciprocating air compressor. The engine is operated in a through scavenge two-stroke mode. The engine has opposed pistons reciprocating in opposition in a cylinder, the pistons being rigidly connected to respective compressor pistons wor... | 09/19/1978 |
