Expanding piston

Details Expanding piston Expanding piston

1977-12-30

1980-05-20

Myhre, Charles J.

Internal-combustion engines

Transmission mechanism from piston

Including clutch

123197AB, 123193P, 123 48B, 123 78B, F02B 7530

Patent

active

042034060

ABSTRACT:
A compound expanding piston for an internal combustion engine. The piston includes a crown or head and a skirt, with the skirt depending from the crown. A sleeve is provided in telescoping arrangement with the skirt, the sleeve in one embodiment including vertical tabs which extend into corresponding vertical slots formed within the walls of the piston skirt. The telescoping concentric relationship of the sleeve and the skirt may be either with the skirt external to the sleeve or vice versa, in alternative embodiments. The skirt and the sleeve are kinematically linked to each other and to the crankshaft of the engine, so that the piston crown or head is raised to a maximum elevation at both the end of the compression stroke and the end of the expansion stroke of the piston. The piston crown and skirt are lowered to a lower elevation relative to the sleeve during the balance of the work stroke, the sleeve being directly connected to the crankshaft of the engine by a connecting rod.

REFERENCES:
patent: 1379115 (1921-05-01), Mallory
patent: 1420236 (1922-06-01), Bohman
patent: 1430491 (1922-09-01), Calcaterra
patent: 1671708 (1928-05-01), Frederickson
patent: 2043518 (1938-06-01), Rice
patent: 2369792 (1945-02-01), Notturno
patent: 2458111 (1949-01-01), Soltesz
patent: 2853989 (1958-09-01), Teegen

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