Abstract The invention relates to a gerotar type rotary piston machine. The casing has a main axis and the gerotor gear set includes an internally toothed ring member with the teeth thereof in the form of rollers and an externally toothed star member which is rotatable about its own axis and orbital about the casing main axis. A main drive shaft is rotatable about the casing axis and a universal type wobble shaft connects the main shaft to the gerotor star member. An insert member is disposed internally of the ring member which has recesses for receiving the rollers of the ring member. The star gear and the insert member have a combined thickness equal to the width of the ring gear. The star gear has a centrally disposed slot and the wobble shaft has a blade shaped portion disposed in the slot. The insert member has a central bore and the blade portion of the wobble shaft extends through the star gear into the central bore. The dimensions of the recesses of the insert member are selected that the axially parallel lines of contact between the rollers and the star gear lie within these recesses.
A gerotor type rotary piston machine comprising an internally toothed ring gear having an axis and having teeth in the form of rollers equal in length to the width of said ring gear, a cooperating externally toothed star gear having fewer teeth than said ring gear disposed eccentrically relative to said ring gear axis, said star gear having rotational movement about its own axis and orbital movement about the axis of said ring gear with the teeth of said gears intermeshing in sealing engagement to form expanding chambers on one side of a line of symmetry and contracting chambers on the other side of said line during relative movement between said gears, wall means on opposite sides of said ring gear, an insert member disposed internally of said ring member and having recesses for receiving said rollers, said star gear and said insert member having a combined thickness equal to the width of said ring gear, a drive shaft, drive means between said star gear and said drive shaft for rotating said drive shaft at the rotating speed of said star gear.
Claim 2
Dependent Claim
182 words
A gerotor type rotary piston machine comprising an internally toothed ring gear having an axis and having teeth in the form of rollers equal in length to the width of said ring gear, a cooperating externally toothed star gear having fewer teeth than said ring gear disposed eccentrically relative to said ring gear axis, said star gear having rotational movement about its own axis and orbital movement about the axis of said ring gear with the teeth of said gears intermeshing in sealing engagement to form expanding chambers on one side of a line of symmetry and contracting chambers on the other side of said line during relative movement between said gears, wall means on opposite sides of said ring gear, an insert member disposed internally of said ring member and having recesses for receiving said rollers, said star gear and said insert member having a combined thickness equal to the width of said ring gear, a drive shaft, drive means between said star gear and said drive shaft for rotating said drive shaft at the rotating speed of said star gear.
Claim 3
Dependent Claim
31 words
A gerotor type rotary piston machine according to claim 1 wherein said star gear has a centrally disposed slot, said drive means having a blade shaped portion disposed in said slot.
Claim 4
Dependent Claim
33 words
A gerotor type rotary piston machine according to claim 2 wherein said insert member has a central bore, said drive means blade shaped portion extending through said star gear and into said bore.