LandOfFree - US Patents - Listing for Internal-combustion engines

Internal-combustion engines – Igniters – Sparkers

Personal watercraft and engine mounted in personal watercraft

Internal-combustion engines – Frame construction – Horizontal cylinder

Personal watercraft engine

Internal-combustion engines – Spark ignition timing control – Electronic control

Personal watercraft engine control

Internal-combustion engines – Starting device – Auxiliary fuel supply device

Personal watercraft vehicle engine

Internal-combustion engines – Rotating cylinder – Radial

Peter Sporea's fuel injector rotary motor

Internal-combustion engines – Charge forming device – Fuel injection system

Petrol injector protection sheath

Internal-combustion engines – Charge forming device – Auxiliary air or oxygen added to combustible mixture

Petrol saving structure of a motor vehicle

Internal-combustion engines – Miscellaneous – Fuels – lubricants and additives

Petroleum and hydrogen driven engine

Internal-combustion engines – Charge forming device – Heating of combustible mixture

Petroleum preheating device for engines

Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing

Phase adjustable cam drive

Internal-combustion engines – Charge forming device – Including means responsive to instantaneous change in engine...

Phase angle modification of the torque amplitude for fuel distri

Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing

Phase change coupling

Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing

Phase change device

Internal-combustion engines – Charge forming device – Heating of combustible mixture

Phase change heat engine

Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing

Phase change mechanism

Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing

Phase change mechanism

Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing

Phase change mechanism

Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing

Phase changing device

Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing

Phase changing mechanism for camshaft of internal combustion eng