Racing engine having trimetal bearings with a thick overlay...

Radial cam internal combustion engine

Ratchet driving internal combustion engine

Reciprocating engine

Reciprocating engines

Reciprocating engines

Reciprocating internal combustion engine

Reciprocating mechanism and engine including the same

Reciprocating mechanism and engine including the same

Reciprocating piston assembly

Reciprocating piston device

Reciprocating piston engine

Reciprocating piston engine and its link mechanism

Reciprocating piston engine, especially internal combustion engi

Reciprocating-piston internal combustion engine

Rocking piston engine and rocking-piston compressor

Rotary mechanical field assembly