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.

Abstract: A fluid connector comprising a body having bore. Apertures disposed about a portion of the body allow a fluid flow to communicate with the bore. Sealing members on a body surface engage cooperating sealing surfaces on component members to be joined. An end of the body is formed to connect the fluid connector to a component member.

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 remainder 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.

Abstract: An engine of reciprocating piston type includes a cylinder block which defines one or more cylinders and connected to which is a cylinder head closing the cylinders. Each cylinder reciprocably receives a respective piston and is defined by a respective cylinder barrel which is integral with the remainder of the cylinder block only at one or both ends. The remainder of the length of the cylinder barrel is spaced from the remainder of the cylinder block in the radial direction by a gap which constitutes a cooling passage. The wall of the cylinder barrel affords a plurality of circumferentially spaced ribs extending in the longitudinal direction of the cylinder lining over at least a proportion of its length.