Pivoting piston rotary power device

A two-phase internal combustion engine having an output shaft extending outwardly from a cylindrical block rotatable about an axis of the shaft, the block received within an external stator having a tubular portion comprising at least two eccentric cam tracks axially spaced apart on an inner surface thereof,

• the cylindrical block comprising:
• a central cylindrical bore extending through the block along the axis of the shaft;
• at least two sets of working compartments axially spaced apart so that each of the sets is associated with a respective cam track, each set comprising a predetermined number, equal to or greater than one, of working compartments disposed at a single radial distance from the axis of the shaft, each compartment forming a sector of a hollow cylinder having a respective cylindrical axis parallel to the axis of the shaft, each working compartment open to a peripheral surface of the block, each working compartment further having a respective radial inward opening communicating with the central bore;
• a plurality of piston assemblies, each piston assembly movable within a respective working compartment, each piston assembly having at least one cylindrical wall portion, each piston assembly comprising a pivot pin having an axis coincident with the cylindrical axis of the respective working compartment, each piston assembly further comprising a roller cam follower for engaging the associated cam track;
• the engine further comprising an internal stator portion received in the cylindrical bore of the block, the internal stator portion having a plurality of passageways formed therein, each of the passageways comprising a respective channel predominantly parallel to the axis of the shaft, each of the channels communicating with at least one respective radial port in the internal stator, each radial port associated with only one of the sets of one or more working compartments, each radial port communicating with the radial inward opening of each working compartment in the respective associated set exactly once during each rotation of the block, at least one of the plurality of passageways comprising an inlet passageway, at least one of the plurality of passageways comprising an exhaust passageway, and at least one of the passageways comprising an ignition passageway.

A pivoting piston rotary device operable as one of a compressor and a pump, the device having an input shaft extending outward from an end of a cylindrical block rotatable about an axis of the shaft and received within an external stator having a tubular wall portion comprising at least two eccentric cam tracks axially spaced apart along an internal surface thereof,

• wherein the cylindrical block comprises:
• a central cylindrical bore extending through the block along the axis of the shaft;
• at least two sets of a predetermined number, equal to or greater than one, of working compartments axially spaced apart so that each of the sets is associated with a respective one of the cam tracks, each of the working compartments disposed at a single radial distance from the axis of the shaft, each compartment forming a sector of a respective hollow cylinder having a respective cylinder axis parallel to the axis of the shaft, each working compartment open to a peripheral surface of the block, each working compartment further having a respective radial inward opening communicating with the central bore;
• the device further comprising:
• a plurality of piston assemblies, each piston assembly associated with a respective working compartment, each piston assembly comprising at least one cylindrical wall portion, each piston assembly comprising a respective pivot pin having an axis coincident with the respective cylinder axis of the respective working compartment, each piston assembly further comprising a respective roller cam follower for following that eccentric cam track with which it is associated so as to execute angular reciprocating movement when the block rotates;
• and
• an internal stator portion received in the cylindrical bore of the block, the internal stator portion having a plurality of passageways formed therein, each of the passageways comprising a respective channel predominantly parallel to the axis of the shaft, each of the channels communicating with at least two respective radial ports in the internal stator, each of the radial ports communicating with each of the radial inward openings in a respective one of the sets of one or more working compartments exactly once during each rotation of the block, at least one of the plurality of passageway comprising an inlet passageway and at least one of the plurality of passageways comprising an exhaust passageway.

A pivoting piston rotary device operable as one of a fluid-driven motor and a fluid expander, the device having an output shaft extending outwardly from an end of a cylindrical block rotatable about an axis of the shaft and received within an external stator having a tubular portion comprising at least two eccentric cam tracks axially spaced apart along an internal surface thereof,

• wherein the cylindrical block comprises:
• a central cylindrical bore extending through the block along the axis of the shaft;
• at least two sets of a predetermined number, equal to or greater than one, of working compartments axially spaced apart so that each of the sets is associated with a respective cam track, each of the working compartments disposed at a single radial distance from the axis of the shaft, each compartment forming a sector of a respective hollow cylinder having a respective cylinder axis parallel to the axis of the shaft, each working compartment open to a peripheral surface of the block, each working compartment comprising a radial inward opening communicating with the central bore;
• the device further comprising:
• a plurality of piston assemblies, each piston assembly comprising a respective piston movable within a respective working compartment, each piston comprising at least one cylindrical wall portion, each piston assembly comprising a respective pivot pin having a respective axis coinciding with the cylinder axis of the respective working compartment, each piston assembly further having a roller cam follower for following that cam track with which it is associated so as to execute angular reciprocating movement when the block rotates;
• and
• an internal stator portion received in the cylindrical bore of the cylindrical block, the internal stator portion having a plurality of passageways formed therein, each of the passageways comprising a channel predominantly parallel to the axis of the shaft, each of the channels communicating with at least two respective radial ports in the internal stator, each radial port communicating with the radial inward opening in each working compartment in a respective set thereof exactly once during each rotation of the block, at least one of the plurality of passageway comprising an inlet passageway, at least one of the plurality of passageways comprising an exhaust passageway.

A pivoting piston rotary power device operable as one of a fluid-driven pump and fluid-driven compressor, the device having an output shaft extending outwardly from an end of a cylindrical block rotatable about an axis of the shaft and received within an external stator having a tubular portion comprising at least two eccentric cam tracks axially spaced out along an internal surface thereof,

• wherein the cylindrical block comprises:
• a central cylindrical bore extending through the block along the axis of the shaft;
• at least two sets of working compartments axially spaced apart so that each set is associated with a respective cam track, each set comprising a predetermined number, equal to or greater than one, of working compartments disposed at a single radial distance from the axis of the shaft, each compartment forming a sector of a respective hollow cylinder having a respective cylinder axis parallel to the axis of the shaft, each working compartment open to a peripheral surface of the block, each working compartment comprising a radially inward opening communicating with the central bore;
• the device further comprising:
• a plurality of piston assemblies, each piston assembly comprising one piston movable within a respective working compartment, each piston comprising at least one cylindrical wall portion, each piston assembly comprising a respective pivot pin having a respective axis coinciding with the cylinder axis of the respective working compartment, each piston assembly further having a roller cam follower for following the cam track associated therewith so as to execute angular reciprocating movement when the block rotates;
• and
• an internal stator portion received in the cylindrical bore of the cylindrical block, the internal stator portion having four passageways formed therein, one pair of passageways comprising a first intake and a first discharge passageway connected to respective intake and exhaust ports for communicating a first fluid at a first pressure to the first set of working compartments , a second pair of passageways comprising a second intake and a second discharge passageway each connected to respective intake and exhaust ports for communicating a second fluid at a second pressure to the second set of working compartments.

A pivoting piston rotary device operable as a compound two-phase internal combustion engine and a compressor, the device having an input shaft extending outward from an end of a cylindrical block rotatable about an axis of the shaft and received within an external stator having a tubular wall portion comprising at least two eccentric cam tracks,

• wherein the cylindrical block comprises:
• a central cylindrical bore extending through the block along the axis of the shaft;
• at least two sets of working compartments axially spaced apart so that each set is associated with a respective one of the cam tracks, each set comprising a predetermined number of working compartments disposed at a single radial distance from the axis of the shaft, each compartment forming a sector of a respective hollow cylinder having a respective cylinder axis parallel to the axis of the shaft, each working compartment open to an outer peripheral surface of the block, each working compartment further having a respective radial inward opening communicating with the central bore;
• the device further comprising:
• a plurality of piston assemblies, each piston assembly comprising one piston associated with a respective working compartment, each piston comprising at least one cylindrical wall portion, each piston assembly comprising a respective pivot pin having an axis coincident with the respective cylinder axis of the respective working compartment, each piston assembly further comprising a respective roller cam follower for following that eccentric cam track associated with that set so as to execute angular reciprocating movement when the block rotates;
• and
• an internal stator portion received in the cylindrical bore of the block, the internal stator portion having five passageways formed therein, two of the five passageways comprising a compressor intake and a compressor discharge passageway, each communicating with the first set of working compartments, the remaining three of the five passageways comprising an engine intake passageway, an engine exhaust passageway and an engine ignition passageway, each communicating with the second set of working compartments.