LandOfFree - US Patents - Listing for Internal-combustion engines,Four-cycle

Internal-combustion engines – Four-cycle – Variable clearance

Reciprocating piston-internal combustion engine with variable co

Internal-combustion engines – Four-cycle – Variable clearance

Rocker engine

Internal-combustion engines – Four-cycle – Single poppet valve

Rotary distribution system internal combustion engine

Internal-combustion engines – Four-cycle – Rotating valve

Rotary valve and valve seal assembly for rotary valve engine...

Internal-combustion engines – Four-cycle – Rotating valve

Rotary valve assembly for an internal combustion engine

Internal-combustion engines – Four-cycle – Rotating valve

Rotary valve assembly for an internal combustion engine

Internal-combustion engines – Four-cycle – Rotating valve

Rotary valve engine

Internal-combustion engines – Four-cycle – Rotating valve

Rotary valve engine

Internal-combustion engines – Four-cycle – Rotating valve

Rotary valve for internal combustion engine

Internal-combustion engines – Four-cycle – Rotating valve

Rotary valve head assembly and related drive system for internal

Internal-combustion engines – Four-cycle – Rotating valve

Rotary valve head system for multi-cylinder internal...

Internal-combustion engines – Four-cycle – Rotating valve

Rotary valve in an internal combustion engine

Internal-combustion engines – Four-cycle – Rotating valve

Rotary valve internal combustion engine

Internal-combustion engines – Four-cycle – Rotating valve

Rotary valve internal combustion engine

Internal-combustion engines – Four-cycle – Rotating valve

Rotary valve internal combustion engine

Internal-combustion engines – Four-cycle – Rotating valve

Rotary valve system

Internal-combustion engines – Four-cycle – Oscillating valve

Rotary valve system for motors and the like having improved seal

Internal-combustion engines – Four-cycle – Single poppet valve

Rotary-poppet valve internal combustion engine

Internal-combustion engines – Four-cycle – Rotating valve

Rotatable timed mechanism for feeding vaporous fluid to a combus