Internal combustion engines having double cylinder units

Details Internal combustion engines having double cylinder units Internal combustion engines having double cylinder units

2006-06-06

2006-06-06

Yuen, Henry C. (Department: 3747)

Internal-combustion engines

Multiple piston, common nonrestrictive combustion chamber

Four-cycle

Reexamination Certificate

active

07055470

ABSTRACT:
An internal combustion engine may comprise at least one double cylinder (17). A piston (10, 12) is reciprocally movably disposed in each individual cylinder (14, 16) of the double cylinder and each piston is connected to a crankshaft (4). The pistons preferably reciprocate in the same direction within the individual cylinders. A cylinder space (19, 20) is defined within the cylinders above each piston head. Preferably, the cylinder spaces are formed such that the cylinder spaces communicate during at least a portion of the reciprocal movement of the pistons.

REFERENCES:
patent: 2706970 (1955-04-01), Rinne
patent: 4274369 (1981-06-01), Rhoads
patent: 5404851 (1995-04-01), Neitz et al.
patent: 6668779 (2003-12-01), Hendriksma et al.
patent: 490735 (1930-08-01), None
patent: 711136 (1941-09-01), None
patent: 1048738 (1959-01-01), None
patent: 2122523 (1972-11-01), None
patent: 4227927 (1994-02-01), None
English Translation of German Priority Document's Examination Report of Jan. 14, 2004.

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