Applicant: William Ronald Yee, Title,"Crankshaft Driven Air Compressor"; U. S. Application No. 09/003,399, Filed: 01/06/98.

BACKGROUND OF THE INVENTION: Noah Kamen, Primary Examiner, Art Unit 3401, has determined that Tanahashi has anticipated much of this invention.

(54) Two-Cycle Engine (11) Kokai Not. 54: 145807 (43) 11.14.1979 (21) Appl. No. 53-53387 (22) 5.4.1978 (71) Toyota Jidosha Kogyo K. K. (72) Toshio Tanahashi (51) Int. Cl. F02B 11/00, F02B 25/08 Related Applications: Uniflow, Double-Opposed Piston Type Internal Combustion Engines, Noguchi et al, United States Patent 4,216,747, August 12,1980. Internal Combustion Engine, Zimmerly, United States Patent 4,305,349, December 15,1981.

BRIEF SUMMARY OF THE INVENTION The Two Piston Per Cylinder Engine for the Crankshaft Driven Air Compressor is a modified Uniflow, Double-Opposed Piston Type Internal Combustion Engine. The parts of the Uniflow Engine are as follow: 10 Cylinder open at both ends 11 Piston One 12 Piston Two 13 Port for fuel 14 Fuel Device 15 Exhaust Port 16 Exhaust Device 17 Air/Oxygen Port 18 Engine Rods 19 Ignition Device 26 Crankshaft 29 Crankshaft teeth 30 Synchronizing Stem Gear 33 Synchronizing Ring Gear 34 Synchronizing Belt Gear 30 Stem Gear 31 Stem Gear Tooth 32 Stem Gear Shaft 33 Ring Gear 34 Belt Gear 36 Belt Gear Tooth The components of the Crankshaft Driven Air Compressor are as follow: 22 Wall 20 Piston 21 Exhaust Valve 23 Air Intake Port 24 Air Exhaust Port 25 Air Reservoir/Insertion Device 27 Air Reservoir 28 Compressor Rod The Uniflow, Double-Opposed Piston Type Internal Combustion Engine is modified as follows to work with the Crankshaft Driven Air Compressor. The length of the cylinder (10) is extended to permit a complete stroke of the Compressor Piston (20). The Exhaust Port (15) of the Double-Opposed Piston Type Internal Combustion Engine is placed a distance from the center of the Cylinder (10) to permit more than 50% of the potential energy to be converted to mechanical energy before Piston Two (12) opens the Exhaust Port (15). The Air/Oxygen Port (17) is set a distance sufficient from the center of the Engine Cylinder (10) to permit the pressure in the Engine Cylinder (10) to fall to a pressure equal to or less than the pressure in the Air Reservoir/Insertion Device (25). The volume of the Uniflow, Double-Opposed Piston Type Internal Combustion Engine is modified so that when piston one (11) opens the air intake port (17), the volume of the engine cylinder (10) between the two pistons (11) (12) is less than 50% of the volume of the Crankshaft Driven Air Compressor between the piston (20) and the Air Exhaust Port (24) when the piston (20) has just closed the Air Intake Port (23).

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE Crank Shaft Driven Air Compressor and the Uniflow, Double-Opposed Piston Type Internal Combustion Engine modified to operate the Crankshaft Driven Air Compressor.

DRAWING: Page 1/7: Figure 1 shows the relationship of the Engine to the Crankshaft Driven Air Compressor when the pistons in the engine are at maximum separation. The parts are as follow: 10 the engine (10), 18 the engine rods (18) 22 the Compressor (22), 25 the Air Reservoir/Insertion Device (25) 26 the crankshafts (26) 28 rods for the crankshaft driven air compressor (28) 30 synchronizing stem gear (30) Page 2/7: Figure 2 shows the position of the engine pistons (11) ( 12) when piston two (12) has opened the exhaust port (15). The exhaust port (15) of the engine is at a sufficient distance from the center of the cylinder (10) to permit more than 50% of the potential energy of the ignition of the fuel to be converted by mechanical energy by moving the pistons (11) (12), the rods (18) and turning the crankshafts (26). The parts are as follow: 10 Cylinder Wall 11 Piston One 12 Piston Two 13 Fuel Port 14 Fuel Device 15 Exhaust port 16 Exhaust Device 17Air Port 18 Engine Rods 19 Ignition Device 20 Compressor Piston 21 Compressor Exhaust Valve 22 Compressor Wall 23 Compressor Air Intake Port 24 Compressor Exhaust Port 25 Air Reservoir/Insertion Device 26 Crankshaft 28 Compressor Rod Page 3/7 Figure 3 shows the engine with piston one (11) opening the air intake port (17). The air intake port (17) is set at a distance from the center of the engine cylinder (10) sufficient to allow the exhaust gases to leave through the exhaust port (15) and lower the pressure in the engine cylinder (10) so that it is equal to or less than the pressure in the crankshaft driven air compressor (22) and the air insertion device (25). The parts are listed as follow: 10 Cylinder Wall; 11 Piston One 12 Piston Two 13 Fuel Port 14 Fuel Device 15 Exhaust port 16 Exhaust Device 17Air Port 18 Engine Rods 19 Ignition Device 20 Compressor Piston 21 Compressor Exhaust Valve 22 Compressor Wall 23 Compressor Air Intake Port 24 Compressor Exhaust Port 25 Air Reservoir/Insertion Device 26 Crankshaft 28 Compressor Rod Page 4/7 Figure 4 shows the engine at maximum separation of the pistons (11) (12). The length of the engine cylinder (10) is long enough to permit necessary and complete movement of the compressor piston (20) for operation of the crankshaft driven compressor. The parts are listed as follow: 10 Cylinder Wall; 11 Piston One 12 Piston Two 13 Fuel Port 14 Fuel Device 15 Exhaust port 16 Exhaust Device 17Air Port 18 Engine Rods 19 Ignition Device 20 Compressor Piston 21 Compressor Exhaust Valve 22 Compressor Wall 23 Compressor Air Intake Port 24 Compressor Exhaust Port 25 Air Reservoir/Insertion Device 26 Crankshaft 28 Compressor Rod Page 5/7 Figure 5 shows the relationship of the Stem Gear (30) to the Crankshaft (26) when the pistons l 1) (12) are at maximum separation in the cylinder (10) of the engine. The parts are as follow: 14 Fuel Device 16 Exhaust Device 18 Engine Rods 19 Ignition Device 25 Air Reservoir/Insertion Device 26 Crankshafts 29 Crankshaft Teeth 30 Stem Gear 31 Stem Gear Tooth 32 Stem Gear Shaft Page 6/7 Figure 6 shows the relationship of the two crankshafts (26) to the Ring Gear (33). The parts are as follow: 26 Crankshafts 33 Ring Gear Page 7/7 Figure 7 shows the relationship of the crankshafts (26) to the belt gear (34).

The parts are as follow: 26 Crankshafts 34 Belt Gear DETAILED DESCRIPTION OF THE INVENTION The Uniflow, Double-Opposed Piston Type Internal Combustion Engine is modified to operate the Crankshaft Driven Air Compressor. The Uniflow, Double-Opposed Piston Type Internal Combustion Engine has a cylinder (10) open at both ends. There is an ignition device (1), a fuel port (13) and a fuel device (14) at the center of the cylinder (10). There are two pistons (11) (12) that approach each other at the center of the cylinder (10) to compress the air in preparation for insertion of the fuel for firing.

When the two pistons are at their closest approximation in the cylinder (10) the fuel insertion device (14) delivers fuel into the cylinder (10) and the ignition device (19) ignites the fuel. The ignition of the fuel increases the pressure in the cylinder (10) between the pistons (11) (12) and drives the pistons apart. The pistons drive the rods (18) which turn the crankshafts (26). The synchronizing gears (30) (33) (36) force the crankshafts (26) to turn with equal velocities. The equal velocities of the crankshafts (26) force the engine rods (18) to move with equal and opposite velocities. The equal and opposite velocities of the engine rods (18) force the pistons (11) (12) to move with equal and opposite velocities. The equal and opposite velocities of the pistons (l 1) (12) keep the pistons at equal or symmetrical distances from the center of the engine cylinder (10). The symmetry of the pistons (11) (12) permit the pistons to operate the exhaust port (15) and the air intake port (17) without valves and valve assemblies.

The exhaust port is placed in the cylinder at a distance where more than 50% of the potential energy of the combustion of the fuel has been converted to mechanical energy by separation of the pistons (l 1) (12).

The air intake port (17) is placed at a distance from the center of the cylinder (10) where exhaust of the combusted fuel through the exhaust port (15) has reduced the pressure between the pistons (ll) (12) to a pressure equal to or less than the pressure achieved in the Air Reservoir/Insertion Device (25).

The pistons (11) (12) in the engine drive the engine rods (18) which drive the crankshafts (26) which drive the compressor rods (28) which drive the compressor pistons (20).

The engine pistons (11) (12) continue to separate until the compressor pistons (20) have completed the necessary compression of air to achieve the necessary flushing of the engine cylinder (10). The cylinder (10) is lengthened sufficiently to permit complete operation of the crankshaft driven air compressor. The pistons (11) (12), the engine rods (18), the crankshafts (26) and the engine cylinder (10) are all modified to conform to the needs of the crankshaft driven air compressor. The positioning of the exhaust port (15) and the air intake port (17) are modified to maximize the efficiency of the crankshaft driven air compressor.