Seal device for valve rod of an internal-combustion engine

Sealing arrangement for a rotary slide valve

Sealing element for a rotary timing system of internal-combustio

Sealing means for rotary valves

Sealing ring for reciprocating machine parts

Sealing structure of a rotary valve in an internal combustion en

Secondary combustion chamber systems and apparati for internal c

Selective asymmetric swirl intake port

Self locking valve guide

Self locking valve seat insert

Self-sealing rotary aspiration system for internal combustion en

Semi-rotating valve assembly for use with an internal...

Shielded valve

Shrouded valve for internal combustion engine

Shutter valve system for internal combustion engines

Sintered alloy valve seat and method for manufacturing the same

Sleeve-type rotary valve for an internal combustion engine

Sliding stem seal, particularly for valve stems

Slotted cylindrical tube rotary valve assembly

Spark ignition engine having combustion chamber provided with ve