Engine of reciprocating piston type

Internal-combustion engines – Cooling – Engine or cylinder-mounted heat dissipators

Reexamination Certificate

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Details

C123S041610, C123S193100, C123S041790

Reexamination Certificate

active

06886504

ABSTRACT:
An engine of reciprocating piston type includes a cylinder block (4) with one or more cylinders (2), each of which receives a respective piston (10) and is defined by a respective cylinder barrel (8), which is integral with the reminder of the cylinder block. The outer surface of each cylinder barrel (8) carries a plurality of substantially circumferential discontinuous reinforcing ribs, each comprising a plurality of elongate projections (12) spaced apart by gaps (14). Each projection (12) in each rib is in registry with a gap in the or each adjacent rib, when viewed in the direction of the length of the associated cylinder barrel.

REFERENCES:
patent: 5749331 (1998-05-01), Pettersson et al.
patent: 6123052 (2000-09-01), Jahn
patent: 42 26 743 (1994-02-01), None
patent: 0 911 509 (1999-04-01), None
patent: 601 894 (1948-05-01), None
patent: 900 294 (1962-07-01), None
patent: 58-013256 (1983-01-01), None

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