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A rotary machine which can be either a pump or an internal combustion engine has a housing enclosing a plurality of rotor spindles lying on the surface of an imaginary cone for driving an output shaft positioned at the vertex of the imaginary cone. The spindles have a beveled gear on one end and eng

A rotary machine which can be either a pump or an internal combustion engine has a housing enclosing a plurality of rotor spindles lying on the surface of an imaginary cone for driving an output shaft positioned at the vertex of the imaginary cone. The spindles have a beveled gear on one end and engaging an output shaft and a conical bearing on the other end. Angled eccentric rotors are mounted to each spindle shaped to maintain tangential sliding contact with two adjacent rotors to form a compression or combustion chamber. A spherical version of a compressor or an engine uses a plurality of rotary pistons each of which is eccentrically mounted and forms a spherical segment. Each rotary piston is mounted for tangential sliding contact with at least two other rotary pistons to form a displacement chamber therebetween. The rotary pistons use a generally “tear drop” shape. A rotary pump has a housing having a manifold for distributing intake and exhaust air. The pump has a plurality of lobe shafts, each having an eccentrically mounted rotor attached thereto mounted in the housing to form a compression chamber in the middle of the rotor when the rotor are all in contact with each other during rotation.

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I claim: 1. A rotary machine comprising:a housing;a plurality of rotary shafts five or six in number and each having a central axis about which that rotary shaft rotates, wherein the plurality of rotary shafts are mounted in said housing with their central axes parallel to each other; anda plurality

I claim: 1. A rotary machine comprising:a housing;a plurality of rotary shafts five or six in number and each having a central axis about which that rotary shaft rotates, wherein the plurality of rotary shafts are mounted in said housing with their central axes parallel to each other; anda plurality of rotary pistons, each rotary piston being located on a corresponding different one of said plurality of rotary shafts for rotation therewith, wherein the plurality of rotary pistons are arranged relative to each other so that each rotary piston of the plurality of rotary pistons is in tangential sliding contact with at least two other rotary pistons of the plurality of rotary pistons during at least part of a complete cycle of operation, wherein the plurality of rotary pistons together forms a working chamber having a volume which changes as the plurality of rotary pistons rotate; anda gear system including a plurality of rotary gears, each of which is located on one end of a corresponding different one of the plurality of rotary shafts, wherein said gear system synchronizes rotation of the plurality of rotary shafts during operation,wherein the plurality of rotary pistons are shaped so that during at least part of each complete cycle of operation, the plurality of rotary pistons go out of contact with each other thereby opening up the working chamber.