Abstract: Four adjacent parallel rotors of elliptical cross section have hollow interior flow passages communicating through hollow supporting shafts at one end. The supporting shafts at the opposite ends of the rotors have eccentric crank pins received in bearing holes in a common connecting block which orbits as the rotors rotate in unison. One of the shafts extends beyond the crank block as a drive shaft. Each rotor has a second flow passage opening through its surface adjacent to one apex of its major axis. A first pair of these flow passages, in diametrically opposed rotors, open in trailing relation to apices of the two rotors. The other pair of rotors has secondary flow passages through their surfaces in leasing relation to the apices of the latter two rotors.

Abstract: A single screw mechanism with a reduced differential pressure applied to gaterotor teeth. This is accomplished by providing multiple tooth engagement of gaterotor teeth in a particular mainrotor compression chamber. Multiple tooth engagement makes possible the use of metallic gaterotor teeth and the elimination of gaterotor supports used to prevent the disengagement of gaterotor teeth due to high differential pressure.

Abstract: An offset three-gear, two-system pump includes first, second, and third overlapping chambers. First inlet and low-pressure outlet ports communicate with the first and second chambers, and second inlet and high-pressure pressure outlet ports communicate with the first and third chambers. The first chamber has a short wall portion extending from the low-pressure outlet port to the second inlet port, and a long wall portion extending from the high-pressure outlet port to the first inlet port. First, second, and third gears are respectively rotatable in the chambers. The first and second gears form a low-pressure gear set, and the first and third gears form a high-pressure gear set. A small number of first gear teeth are cooperable with the short wall portion and a large number of first gear teeth are cooperable with the long wall portion to effect sealing against leakage from the pressure ports to the inlet ports.

Abstract: A rotary engine has covers spaced from one another, rotors located between the covers and planetating in different phases, gearings for synchronizing planetating of the rotors and including first and second gears, a plurality of carriers each connected with the rotors planetating in the same phase and planetating with the same, eccentric shafts arranged to support the carriers during their planetating; elements for connecting said covers with one another.

Abstract: A hydraulic motor having variable speed and torque capabilities is comprised of a housing which provides a primary chamber and a plurality of secondary chambers spaced apart about the primary chamber and opening radially thereinto. A primary gear is supported for rotation in the primary chamber, and a secondary gear is supported for rotation in each of the secondary chambers and in meshing engagement with the primary gear. Each secondary chamber is provided with a pair of ports for connecting the chamber with a source of hydraulic fluid under pressure, whereby fluid flow across the secondary chamber rotates the secondary gear to impart rotation to the primary gear and an output shaft associated therewith. A hydraulic fluid flow control system provides for selectively controlling fluid flow to each of the secondary chambers, thus enabling driving of the primary gear and output shaft in opposite directions and with variable speed and variable torque characteristics in each direction.

Abstract: A rotary internal combustion engine having separately housed compression and power rotors, and wherein there is a pair of sealing rotors positioned adjacent to diametrically opposite peripheral edges of each rotor to form two sealed pressure chambers in each housing.

Abstract: A screw is adapted to cooperate with a casing and at least one pinion-wheel for compressing or expanding a fluid within the space located between two screw threads, the casing and a tooth of the pinion-wheel. The casing and crests of the threads carry two cooperating surfaces, and at least part of one of the surfaces comprises lands defining continuity of the surface but being discontinued along any circle centered on the axis of the screw. The lands separate cells which trap formative seizure particles and, thus, reduce the clearance needed between the screw and the casing.

Abstract: This invention relates to a rotary fluid machine that is actuated by any fluid under pressure in which a rotor carrying a piston member (16) rotates continuously when the machine is in operation about the axis of an annular chamber (14), the piston member is mechanically connected to a rotary obturator (18.sub.1, 18.sub.2) that rotates in a sealing chamber (15.sub.1, 15.sub.2) about an axis substantially parallel to said axis of the annular chamber (14) and the rotary obturator (18.sub.1, 18.sub.2) has a recess (20.sub.1, 20.sub.2) in which a part of the piston enters during rotation, to provide a working section in the annular chamber (14) as working fluid is fed to the piston, the machine is characterized by a rotary obturator (18.sub.1, 18.sub.2) having a body in the form of a solid of revolution that is in at least two parts (FIG.

Abstract: A rotary fluid machine of the kind that is to be actuated by any fluid under pressure in which a rotor (15) carrying a piston member (15.sub.4) rotates continuously when the machine is in operation about the axis (AA1) of an annular chamber (21), the piston member (15.sub.4) is geared to rotary obturators (17.sub.A 17.sub.B) that rotate in sealing chambers 21.sub.1 in an annular member 21.sub.2 projecting into the annular chamber 21 about an axis (BB1, CC1) substantially parallel to said axis (AA1) of the annular chamber (21) and the rotary obturator has a recess into which a part of the piston enters during rotation to provide a working section in the cylinder as working fluid is fed to the piston. The machine is characterized in that the piston member (15.sub.

Abstract: In a gear pump or motor having a housing and at least two intermeshing gears, one of the gears being fixed to a rotatable shaft and the other being a shaftless gear having a plurality of gear teeth rotatable on a film of fluid in close proximity to an interior surface of the housing, the improvement being a unique tooth profile on the shaftless gear. Each gear tooth on the shaftless gear has a thick top land, preferably at least twice as thick as the top land on each gear tooth on the gear fixed to the rotatable shaft. This particular intermeshing gear tooth configuration increases the bearing surface of the shaftless gear on the film of fluid within the interior of the housing to better support the shaftless gear and thereby reduce frictional wear.

Abstract: This invention relates to worm-type rotary fluid means, wherein a worm body having a plurality of helical screw threads and a plurality of grooves therebetween is engaged with a cylindrical pinion having a plurality of teeth. In this engagement, the fluid discharge volume is increased much greater than that of a conventional worm. This is due to the fact that the engagement of each pinion tooth of each worm groove has increased contact length and depth. Further, this causes a very stable engagement.

Abstract: A stator enclosure bounded by two side plates confines three fixed blocks and rotor components comprising an internal ring eccentrically disposed about a centrally positioned power delivery shaft which emerges from said enclosure, an outer floating ring which encompasses said blocks, and three identical and equidistantly spaced elliptic plates adapted to rotate about their centers. Rotation of said elliptic plates achieves tangential rolling contact with said internal and outer rings to form three chambers whose volumes vary with rotational displacement of said rotor components. Ports associated with said side plates enable gases to enter and exit said three chambers.

Abstract: A pair of tangential rotors are provided on separate shafts dependently rotatable in a housing, one having a vane and the other a notch for allowing passage of the vane, to form a fluid-tight segmented annular region through which the vane moves. A valve admits a mass of high pressure compressible fluid to the region through a triangular port for expansion, or from the region after compression, the mass of fluid being confined in a portion of the region between the vane and the surface of the notched rotor and changing in pressure because of the change in arcuate length and thus volume of the confined region portion. Multiple pairs of rotors may be included on the one rotor and two notches on the other. Two vaned rotors may cooperate with one notched rotor, the vaned rotors being on separate shafts.

Abstract: A machine of positive displacement type for the expansion or compression of elastic fluids, wherein torque created or applied effects directly the power shaft, bearings of the power shaft are loaded only by weights of corresponding rotary masses, sealing lubrication is not used and the structure of the machine should accountably facilitate achieving of low losses.The machine includes working spaces (5) defined by a rotary working member (1) and a surrounding body structure (4), and moving circumferentially with the working member, their main direction joining with said circumferential direction. The working spaces (5) are divided into a process space (6) and a transferring space (7) by a partition wall (15) belonging to rotary non-working reacting members (8) which are perpendicular to the working member and synchronized therewith and of so firm structure that they can transmit to the outside of the working member great forces due to a pressure difference between said spaces (6, 7).

Abstract: This invention relates to a rotary fluid machine (e.g. a compressor) of the single screw type, the single screw cooperating with rotary toothed gate rotors to define fluid-filled chambers whose volumes vary as the screw rotates. The invention is concerned with the provision of two or more capacity-regulating valves provided for the chambers of such a machine, the operating members of such valves being arranged such that one member can be moved independently of the other or others.

Abstract: An air compressor of the globoid-worm type having a rotor formed with a plurality of threads in meshing relation with two oppositely arranged star pinions. The rotor and star pinions are arranged in a single piece housing which incorporates all openings as required for assemblage and operation of the functional elements of the compressor. The rotor has an integral shaft which projects from the housing. A cover encloses an end of the housing and is provided with outlet passages for the air compressed in the housing. Oil injection openings are arranged in the housing for application of lubricant to the rotor for sealing and cooling purposes.

Abstract: A fluid pumping system comprises a fluid pump having multiple fluid outlet flows coupled to relatively low and high pressure loads. A control valve system controls the pressure levels of the low and high pressure flows, and relieves excess fluid from the high pressure flow to the low pressure flow to augment the low pressure flow.

Abstract: A pump has three gears disposed in three cavities of a housing, with the first and second gears being connected and the second and third gears being connected. A pressurized fluid source is connected to the housing for rotating the gears, whereupon fluid is drained into and expelled from housing through a plurality of passages therein.

Abstract: A module pump comprises a manifold having intake and outlet connections; a plate to which gears and a "shoe" (which function to define pump chambers for a pair of gears) or, in a pump having three gears two "shoes;" a drive for the gears, which in a preferred embodiment is a magnetic drive; and a barrier between the drive and the plate. Each of the modules is subject to variations in design depending upon end use and hence wide versatility is achieved without great increases in manufacturing cost since only one of the modules need be altered. Use of three gears doubles the capacity of the pump; if three gears are not needed the mounting holes for the third gear may be plugged. A unique bypass is installed in the manifold to permit flow back to the intake when the pressure exceeds an adjustable amount.

Abstract: In a rotary piston machine the main rotary piston makes sealing engagement with at least one end wall of the main rotor bore and at least one inlet port is provided in that end wall and is located within the compass of the cylindrical portion of the main rotary piston, the main rotary piston is cut-away to open the inlet port to the working spaces of the machine, which are defined by the main and auxiliary rotor bores, the outer peripheries of the rotary pistons and the end walls of the housing, in order to induce working fluid into such spaces.

Abstract: A positive displacement device utilizing at least two rotors which roll sealingly on one another at a common pitch surface speed. Outwardly extending lobes on one rotor sealing engage the cylindrical bore of the housing of the device, fluid traversing the device circumferentially in the annulus between such bore and the pitch surface of the rotor. Speed of rotation of the two rotors is controlled by a timing chain running between sprockets mounted on the rotor shafts.When the lobe passes the line of sealing contact, a cavity is provided in the meshing rotor, and the lobe makes sealing contact with the wall of this cavity during at least that interval when there is no sealing contact between the pitch surfaces, i.e., the interval when the mouth of the cavity is passing through dead center.

Abstract: A positive displacement engine utilizing interlocking vaned rotors and providing for the virtually complete exclusion of spent vapors following the expansion cycle.

Abstract: A gear-type machine whose housing accommodates two symmetrical idle gears which are in mesh with an internal toothing of an element embracing them inside the housing and with an external toothing of a central gear, whereas the spaces confined between the idle gears and the toothings accommodate webs to form herewith fluid tight chambers for a working fluid which thus imparts rotation of the idle gears. The internal toothing is stationary and carries the webs, while the idle gears are free to roll over the stationary toothing to impart rotation to the central gear which, in turn, may transmit the torque to a machine output member. In another, preferred embodiment, the central gear is stationary while the housing with its internal toothing is rotatable and constitutes the output.The inventive machine enables rotation of the output member through an angle smaller or greater than 360.degree..

Abstract: A readily reversible, rotary type internal combustion engine which is selectively operable as a compressor and capable of several basic modes of operation, wherein an expansible combustion chamber or volume cyclically initiated from zero volume is chargeable, directly from a contractible compression volume, with compressed gaseous fluids in real-time as the combustion chamber is cyclically formed and expands from a selectively small volume, said volumes being formed within a housing between intermeshing rotors. The flow of compressed and expanding gases within the apparatus is controlled primarily by said rotors.

Abstract: An internal combustion engine wherein a rotor is turnable within a housing while having an outer periphery which defines a circular channel with an inner periphery of the housing, the rotor having a pair of diametrically opposed projections end surfaces of which fluid-tightly and slidably engage the inner periphery of the housing. At least a pair of rotary members are connected with the housing while having a sealed, fluid-tight engagement therewith, these rotary members extending into the channel between the inner periphery of the housing and the outer periphery of the rotor and having a fluid-tight engagement with the outer periphery of the rotor. The rotary members are respectively formed with pockets which receive the projections as each projection moves past each rotary member.

Abstract: A rotary piston machine is provided in which the, or each, auxiliary rotary piston has a portion projecting axially beyond at least one end face of the main rotary piston, and in which a transfer port is provided in an end wall of the main rotor bore leading to the part of the auxiliary rotor bore containing said projecting portion of the auxiliary rotary piston and a discharge port is provided leading from said part of the auxiliary rotor bore at a position spaced from the transfer port, said projecting part of the auxiliary rotary piston providing a rotary valve for opening and closing communication between the transfer port and the discharge port at the required times during the rotational cycle of the machine.

Abstract: A rotary machine useful as a rotary compressor or engine having a cylindrical compressor rotor with a lobe outstanding from its cylindrical rolling surface geared to another cylindrical rotor with a recess, in its cylindrical rolling surface, the rotors being rotatable within respective parallel intersecting cylinders of a stator so that the lobe sweeps its stator cylinder and meshes with the recess as it moves past the other rotor.The lobe and recess are of such complementary shape that the lobe more than half fills the recess while still contiguous with its cylinder and the leading face of the lobe is contiguous with the leading surface of the recess after separation of the rolling surface so that the gases entrapped in the recess are of minimum quantity, and are released from the recess back into the cylinder but behind the trailing surface of the lobe.

Abstract: A rotary engine of the internal combustion type comprising a housing having therein a main rotor chamber providing a main rotor axis and having therein combustion and exhaust blocking rotor chambers which intersect the main rotor chamber and which provide combustion rotor and exhaust blocking rotor axes spaced from and parallel to the main rotor axis. A lobed main rotor is rotatable in the main rotor chamber, and combustion and exhaust blocking rotors are rotatable in the combustion and exhaust blocking rotor chambers. The combustion rotor is provided with circumferentially spaced combustion cavities therein to receive the lobes, and the exhaust blocking rotor is provided with circumferentially spaced cavities to receive the lobes. The main, combustion and exhaust blocking rotors are geared together and the peripheries of the combustion and exhaust blocking rotors are substantially tangent to the periphery of the main rotor between the lobes thereon.

Abstract: A rotary four-cycle internal combustion engine having an expansible combustion chamber defined by three identical rotors of generally triangular cross-sectional shape journalled for cooperative rotation about parallel axis and so arranged in peripheral line contact with one another as to sequentially expand and contract the combustion chamber as the rotors rotate in unison as controlled by gearing. The rotors are journalled within a cylindrical housing structure comprising inner opposed end walls between which the rotors extend to define the ends of the central combustion chamber. A rotary valve mechanism communicating through one of the opposed end walls and geared in timed sequence with the rotors, provides for discharge of the gasses of combustion and the intake of gaseous fuel during respective exhaust and intake phases of operation, while at the same time serving as a power output shaft.

Abstract: A mechanical system for a rotary machine, which has a rotor and sets of abutments arranged around the rotor. The abutments are arranged to couple mechanically with the rotor and with separate consecutive variable volume channels or chambers of different pressures dividing a peripheral groove in the rotor by blades.

Abstract: A rotary type engine is modified to be used as an air compressor and the air compressor is employed in an air cooling system. In the air cooling system, the air compressor supplies compressed air to a heat exchanger which reduces the temperature of the compressed air. The cooled compressed air is allowed to expand and cool within an expansion cavity of the compressor, and the rotation of the compressor forces the cooled air to emerge from an exit port in the compressor.

Abstract: A gear pump and motor having a plurality of pumps and motors, each of which have at least three gears interengaged with one another, seal members disposed adjacent to the gears, and control means for selectively controlling the movement of the seal members toward or away from the gears of the pump and motors so as to selectively actuate the pumps and motors so as to attain a desired output.

Abstract: A rotary steam engine comprising a hollow cylindrical housing, a cylindrical rotor mounted concentrically within the housing having radially extending vanes rigidly secured thereto projecting between the rotor and the housing to form chambers therebetween in conjunction with the rotor and housing, a plurality of rotary valves carried in the housing and spaced angularly around the periphery of the rotor in rolling engagement with the rotor and having pockets therein for receiving the vanes as they pass through the valves, a gear train for synchronizing the rotation of the rotor and valves, means for passing fluid into the chambers between the rotor and housing and exhausting fluid therefrom positioned adjacent each of the valves, a rotation selector plate for porting the fluid under pressure into and exhausting the fluid from the chambers for selecting direction of rotation of the rotor, and a separate cutoff plate associated with each of the valves synchronized with the rotation of the valves for shutting off