Bizarre Patents
A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 7240645 | Internal combustion engine The invention concerns an internal-combustion engine, the engine comprising a first combustion chamber, a first piston displaceably guided in the first combustion chamber, the first piston facing the first combustion chamber with a first piston surface in a first di... | 07/10/2007 |
| 7174864 | Combustion engine A combustion engine comprising; a pair of opposed cylinder elements (2, 3) having a common axis, each cylinder element being provided with a piston (28) reciprocable between first and second locations in the cylinder element the first and second locati... | 02/13/2007 |
| 7124718 | Multi-chamber internal combustion engine An internal combustion engine includes a piston dividing a cylinder into first and second variable volume chambers on either side thereof. One chamber admits and compresses air which is delivered to another chamber for combustion. The other chamber admits combustion... | 10/24/2006 |
| 7025022 | Exhaust valve and intake system A method for controlling a fluid quantity in an internal combustion engine is provided for an internal combustion engine having an engine shaft and an operation cycle that includes at least one intake phase, one proportioning phase, one combustion phase in a combust... | 04/11/2006 |
| 5203295 | Internal combustion engine A multicylinder internal combustion engine includes a plurality of reciprocating pistons each having a piston rod connected to a ball cage arrangement for converting reciprocating motion of the piston rod into rotation of a shaft coaxial with the piston r... | 04/20/1993 |
| 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 |
| 4462345 | Energy transfer device utilizing driveshaft having continuously variable inclined track An energy transfer device includes a rotatable driveshaft supported within a cylinder and including first and second pistons slidably mounted within the cylinder. The driveshaft has first and second generally helical tracks formed thereupon and extending ... | 07/31/1984 |
| 4453504 | Single piston, double chambered reciprocal internal combustion engine An engine with a cylinder assembly defining a cylinder chamber therein in which is reciprocally mounted a piston on a support tube slidably projecting on opposing ends of the cylinder chamber. A drive shaft is rotatably mounted through the support tube an... | 06/12/1984 |
| 4180028 | Fluid operated device A fluid operated device comprises a cylinder, a piston movable axially therein, a shaft parallel to the axis of the cylinder and coupling means coupling the piston and cylinder and/or the piston and shaft in such a way that axial reciprocation of the pist... | 12/25/1979 |
| 4043301 | Internal combustion engine An internal combustion engine is disclosed having opposed, axially aligned, annular reciprocating and rotatable pistons connected through radially disposed crankshafts to a drive shaft which extends coaxially of the opposed pistons. The crankshafts are so... | 08/23/1977 |
