Rotary gear device

A rotary gear motor which comprises a housing, and at least one pair of rotatable, meshing gears positioned within said housing, said meshing gears defining spaced teeth which extend helically in the general direction of the axis in each gear;

• a fuel inlet and an exhaust outlet, each positioned in the housing to permit flow of fluids substantially longitudinally between the meshing gears as said gears rotate said teeth through a tooth meshing area, the teeth of said meshing gears defining first chambers which move substantially longitudinally while shrinking in size to substantially zero volume as they rotate toward a dead center plane, and defining second chambers formed between said spaced teeth rotating away from said dead center plane and increasing in volume;
• a substantially fixed volume furnace chamber positioned to receive fluid from said first chambers of the gears as they rotate toward the dead center plane and to provide pressurized fluid to the said second chambers as they are formed adjacent said dead center plane and rotate away therefrom;
• said fuel inlet being positioned to provide fuel to spaces between said first gear teeth as said gear teeth forms said chambers rotating toward the dead center plane, and said exhaust outlet positioned to receive exhaust from spaces between said teeth as said teeth rotate away from the dead center plane;
• a recycle member for receiving pressurized exhaust and recycling some of said exhaust, said recycle member comprising a circumferential groove positioned at one end of said gear teeth in a zone rotationally farther beyond the dead center plane where said second chambers are expanding, to provide exhaust to said expanding second chambers at a nearer rotational position to the dead center plane, where said second chambers open to highly compressed fluid in said fixed volume furnace chamber, to facilitate formation of a shock wave to transmit energy to power expansion of said second chambers.

A rotary gear device which comprises a housing, and a plurality of pairs of coaxial, rotatable, meshing gears positioned within said housing, said meshing gears defining spaced teeth which extend helically in the general direction of the axis of each gear;

• a flow inlet and a flow outlet, each positioned in the housing to permit flow of fluid between the meshing gears as said gears rotate said teeth through a tooth meshing area, the teeth of said meshing gears defining first chambers which shrink in size to substantially zero volume as they rotate toward a dead center plane, and defining second chambers formed between said spaced teeth rotating away from said- dead center plane and increasing in volume;
• a substantially fixed volume furnace chamber positioned between gear pairs to receive fluid from said first chambers of the gear pairs as they rotate toward the dead center plane and to provide pressurized fluid to said second chambers as they are formed adjacent said dead center plane and rotate away therefrom;
• the teeth of the gears defining said first and second chambers between them that communicate with entry and exit ports of the furnace chamber at specific rotational positions of the gears, the entry and exit ports being respectively positioned at opposite sides of the dead center plane of said meshing gears, one of said pairs of gears having teeth that are rotationally displaced relative to the teeth of the adjacent pair of meshing gears on the other side of the furnace chamber, so that the respective first chambers of the gear pairs communicate with the furnace chamber ports at differing rotational positions of said gears, whereby turbulence is promoted in said furnace chamber.