Two stroke engines

Internal-combustion engines – Two-cycle – Rear compression

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Details

123 73PP, 74597, F02B 3304

Patent

active

041096223

ABSTRACT:
Two stroke engines of crankcase precompression type comprising an integral main body block which includes a cylinder block section and a crankcase upper section, and to which a crankcase lower section and a cylinder head are secured at the lower and upper ends thereof. The body block is formed with scavenging passages of which lower ends are substantially straight so as to facilitate removal of the block from manufacturing dies. The engine includes a crankshaft which is supported by bearings secured to the crankcase lower section by means of separate semi-circular retaining members.

REFERENCES:
patent: 1264247 (1918-04-01), Wygodsky
patent: 1423365 (1922-07-01), Smith
patent: 1531066 (1925-03-01), Brice
patent: 2218332 (1940-10-01), Fowler
patent: 2586467 (1952-02-01), Jacobson
patent: 3374776 (1968-03-01), Hooper
patent: 3612014 (1971-10-01), Teaney
patent: 3971297 (1976-07-01), Fox

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