Abstract: A rotary machine with lenticular pistons and valves usable for internal and external combustion engines, expansion motors and pumps. A flat central stator housing is provided with two lateral cover housings. A plurality of rotating elements enclose the interior of the stator housing and rotate on stationary parallel shafts pivoted on bearings inside the cover housing. The parallel shafts are interconnected by a synchronizing gear train which causes the shafts to rotate in one direction and at the same angular speed. A cylindrical central cavity extends in the central stator housing throughout its entire thickness, and intersects smaller cylindrical equidistant surfaces distributed around the periphery. The cylindrical equidistant surfaces contact the cavity by a rotor-piston with lenticular cross section with associated valves also of lenticular cross section and surrounding the rotor-piston. The rotor-piston and rotor valves maintain continuous contact and form hermetic chambers of variable volumes.

Abstract: A rotary fluid pressure device such as a motor or pump of the type utilizing a Geroler.RTM. gear set. The internal teeth of the Geroler.RTM. are tubular members mounted on bearings to be slightly movable. Between each adjacent pair of tubular teeth is a check valve in the form of a roller which is mounted to be movable slightly more than are the tubular teeth. A resilient band surrounds the rollers, biasing each of them inwardly toward engagement with the adjacent teeth, but permitting each of the roller check valves to move out of sealing engagement with the adjacent teeth when the fluid pressure in the adjacent volume chamber exceeds the combined biasing force of the resilient band and the fluid in the outer fluid chamber. The invention provides a low cost Geroler.RTM. gear set permitting greater manufacturing tolerances, and having improved low speed characteristics and volumetric efficiency, resulting from minimized tooth-tip leakage.

Abstract: A rotary combustion engine in which at least a portion of each of the rotor working surfaces is covered by an insert to raise the operating temperatures of said surfaces.

Abstract: A displacement pump, especially cell pump for high speeds, for compressing gaseous media, which includes a housing in which a rotatable body is journaled having slides radially movably guided therein. The bearings for the rotatable body are radially guiding loose bearings with oil lubrication. Between the bearings for the rotatable body and in the rotatable body there are provided radially slidable discs with spiral grooves. The slides and the housing and/or a cylinder inserted into said housing are made of steel, and the inner wall surface of the housing or of the cylinder forms a smooth sliding surface for the slides.

Abstract: A novel motion translation mechanism is provided for translating rotary motion to reciprocal motion or reciprocal motion to rotary motion. The mechanism is adapted for use in a positive displacement machine for pumping and compressing fluids. A shaft is journaled for rotation within a stationary housing. An inclined annular bearing surface having an annular bearing thereon is integral with the shaft intermediate the journals. Reciprocal motion is imparted to a piston by a yoke ring journaled within the housing and interconnected to the annular bearing. A continuous seal arrangement is carried by the piston. Novel valve means control fluid flow within the machine.

Abstract: The improved sealing grid for a rotary internal combustion engine of the Wankel type comprises a transfer passage means intermittently communicating the space between the inner and outer seals with the working chamber in the exhaust phase, to pass spent combustion gas from the latter to said space and thereby intermittently pressurize the space behind the inner seal and thereby urge the latter into sealing contact with the adjacent wall.

Abstract: A multi-chambered self-priming rotary pump having a pair of eccentric cams, each in contact with opposite sides of a rotor plate at one point and positioned 180.degree. out of phase so that the convex side of one cam is in direct opposition to a concave side of the other cam. At one point of contact on the convex curves, the cams bear against the side surfaces of the rotor which in turn forms a running seal with the bore of a housing to define two symmetrical enclosures at each side of the rotor. During rotation, a split core closure valve reciprocates between the surfaces of the cams and in so doing, the closure valve functions to produce an area of compression to the front of its travel with an area of vacuum to the rear of its travel. As one chamber phases out of cycle, its counterpart is producing maximum outputs.

Abstract: An improved mechanism such as an engine, pump, compressor, or the like, including two abutting housing members sealingly engaging each other and defining a chamber receiving a piston. The members are clamped together and at least one of the members is relieved over a portion of its area of abutment with the other, the relieved portion being remote from the chamber. Upon clamping, excellent contact stress at the boundary of the chamber is established to preclude gas leakage in spite of yielding or fretting of the parts during operation.

Abstract: An improved rotary mechanism such as a rotary engine, and, more specifically, an improved clamp for securing the center and end housings of such mechanisms together. The improved clamping means include at least one elongated bracket having a convex face when unstressed, with the convex face being in contact with the side of one of the end housings opposite from the center housing. Bolts are employed to stress the clamping bracket to bring the convex face into contact with the end housing side along most of the length of the face to eliminate localized stress.

Abstract: A system for precisely positioning a linearly movable output member incorporates an improved nonexpansion, bi-directional vane motor whose internal gas carrying chamber is configured to prevent radial vane reciprocation while the vanes of the motor are under pressure-generated side load. Position of the output member is electrically sensed and in response to the sensed position, pressurized gas flow to the vane motor is adjusted to precisely position the output member.

Abstract: A fluid actuated device of the type wherein the controlled supply and discharge of fluid medium actuates a member for movement through an orbital path in which the flow of the fluid medium is controlled solely by a valve structure rotating in synchronism with a member rotatively driven by said orbitably moving member and which control selectively permits the supply of fluid medium to bypass the orbitably movable member.

Abstract: A rotary piston engine has a pair of side housings made of high silicon aluminum alloy and a rotor made of iron-based material. The side surfaces of the rotor are subjected to a surface treatment called "Sulfinuz" to form surface layers rich in sulphur and nitrogen for minimizing scuffing between the side surfaces of the side housings and the side surfaces of the rotating rotor due to thermal expansion of the side housings and vibration of the rotor.

Abstract: A compressor which may also function as a vacuum pump or as a contactor has a rotor surrounded by a gill ring through which the gas or lower density fluid enters. The gas or lower density fluid, compressed if desired, is discharged from inside the gill ring.

Abstract: A positive fluid pump is provided which is capable of being cleaned in place by a circulating cleaning solution without the various pump components being disassembled. The impellers for the pump are rotatably mounted within a chamber formed in a housing. The inlet and the outlet for the chamber are separated from one another by the engaging impellers during normal operation of the pump. One of the side walls forming the pump chamber is provided with a cavity in which is slidably and sealingly mounted a wall piece. Under normal operation of the pump, the wall piece assumes a first position wherein one surface thereof is disposed adjacent the corresponding end faces of the impellers. When, the pump is being cleaned in place, the wall piece assumes a second position independently of the impellers wherein the one surface thereof is recessed from the pump chamber and the inlet and the outlet are interconnected permitting the cleaning solution to circulate through the chamber and around the impellers.

Abstract: In the embodiment depicted, the system comprises a gas compressing arrangement of first and second rotary compressing stages with an intercooler and an aftercooler for condensing and removing moisture from the compressed gas product. In order to cool the gas compressor, generally, and the second-stage rotor shafts in particular, the cooled, de-moisturized, compressed-gas product is used. Thus, the second-stage rotor shafts are axially bored or hollowed, and a tube is supported within the bore. The tube is through-connected with the outlet of the aftercooler to admit the cooled, compressed gas product into the bore, and, in turn, the compressed gas product is discharged from the bore. Accordingly, the cooled, compressed gas product is cycled through the bore, constantly to cool the shafts all the while that the compressor is running, or under load.

Abstract: In a rotary sliding vane pump having a non-circular cam ring which expands and contracts radially, a cheek plate is clamped against the end face of the cam ring and lies in rubbing contact with the rotor and vanes. The cheek plate has a wearing face of low friction material such as bronze. Unwanted wear between the cheek plate and the cam ring due to its expansion/contraction movements is reduced by the provision of one or more areas of hard metal adjacent the cam ring.

Abstract: A rotary sliding vane compressor having means for biasing the vanes outwardly. Such means include an elastomeric element fastened to the radially inward edge of the vane and means for applying tensile stress to stretch the elastomeric element responsive to a radially inward movement of the vane. The restoring force provided by stretching the elastomeric element in tension ensures that the vanes will be moved outwardly during the expansion phase of rotor travel.

Abstract: In one embodiment of the invention, the engine comprises a rotary-piston, Wankel-type machine having a ceramic-material housing. Within the wall of the housing are confined pluralities of passageways which provide conduits for the conduct therethrough of coolant, for the introduction of a primary or secondary fuel, and for the ignition of the wall-confined-passageway-supplied fuel. The coolant passageways open only externally of the housing, whereby the same supply and discharge coolant to dissipate engine heat. The fuel passageways have openings, which open onto the inner wall of the housing, for supplying air/gasoline-vapor mixture, or methane, or hydrogen, or diesel oil, etc. The ignition passageways confine electrical leads, which leads have a spark-gap interruption formed in each thereof, and also have openings which open onto the inner wall of the housing -- the interruptions being disposed in registry with the openings.

Abstract: A rotary, sliding vane compressor is provided with means for supplying a relatively small, predetermined quantity of an incompressible fluid, such as lubricating oil, underneath the vanes. The fluid is injected at a point while the vanes are collapsing within the vane pockets formed within the rotor and is trapped underneath the vane during its movement to the contact point thereby resisting the collapse of the vane so as to hold the vane tip in continuous engagement with the stator surface in the compression cavity. The means for supplying the fluid underneath said vanes includes a device for interrupting flow of lubricant from a sump to the interior of the compressor housing thereby controlling or metering the lubricant and also preventing reverse rotation of the compressor rotor caused by oil pressure under the vanes forcing the vane tips to follow the curvature of the cylinder wall in a backward direction.

Abstract: In the embodiment of the invention as depicted, the same comprising a rotary compressor, a channel or passageway is provided in the machine to communicate two variable volume chambers which are formed by rotary pistons and walls of the compressor housing, to equalize pressure in the two chambers. The purpose here is to prevent one chamber from pre-compressing before the other, so that a small pocket formed between the rotors by the inter-engaging teeth will not come up to pressure, and be expanded back into the inlet, to avoid a clearance loss and a waste of horsepower.