Abstract: A compound engine system including a Wankel engine having a recess defined in the peripheral wall of the rotor in each of the three rotating chambers, the recess having a volume of more than 5% of the displacement volume of the chambers. The expansion in the turbine section compensates for the relatively low expansion ratio of the rotary engine.

Abstract: Embodiments of a quad-beams and rail-arm-leg modules for use in modular assembly systems for office and industrial work stations. The embodiments have four corner tubes, bars, or channels arranged in a rectangular pattern in cross-section and connected in ways that provide improved ability to transmit torque along a long axis of the multi-track beam while providing improved resistance to twisting under the forces of the torque.

Abstract: A biased dual tip seal arrangement for the rotor (106) of a rotary engine (102). The dual tip seals (100-T, 100-L) are located on opposite corners of the tip (130) of a planetary rotor (106). The rotor (106) orbits within a cutout (126) in a main rotor (108). The seals (100-T, 100-L) are biased away from the corners to make sealing contact with the sealing surfaces of the asymmetrical lobe (112) and the cutout (126) of the main rotor (108). Biasing is implemented with springs (1202, 1302, 1412) and with conduits (1006) that pressurize the area under the seals (100-T, 100-L). An asymmetrical lobe (112?) includes a transition zone (802) on the surface of the lobe (112). In the transition zone (802), at least one seal (100-T, 100-L) on the tip (130) maintains contact with the surface (112?) while alternating contact from one seal (100-T, 100-L) to the other.

Abstract: A rotor of a rotary internal combustion engine, with each of the end faces having at each of the apex portions a recess defined therein in communication with the at least one apex groove, an end seal received in the recess in sealing engagement with the apex seal of each of the at least one apex groove, a first seal member in sealing engagement with the end seal and with the face seal of the face groove defined between the apex portion and a first one of the adjacent apex portions, and a second seal member in sealing engagement with the end seal and with the face seal of the face groove defined between the apex portion and a second one of the adjacent apex portions.

Abstract: The rotary mechanism with articulating rotor may be adapted as a pump or compressor when external power is applied to its shaft, as a motor when differential pressure is applied to its inlet and outlet ports, or as an internal combustion engine when provided with fuel, air, and ignition source. The mechanism includes an internal chamber having major and minor diameters. An articulating rotor having four linked segments rotates therein. The segments allow the rotor to articulate between square and rhomboid shapes as it rotates within the chamber, the rotor segments forming variable volume chamber portions as they rotate. The rotor segments are linked to the central shaft either by a transverse arm rotationally affixed to the central shaft and to diametrically opposed rotor segments, or by telescoping rods connecting the linked ends of the rotor segments to the central shaft.

Abstract: A rotary machine including a rotor having apexes provided with apex seals achieves better efficiency through the use of apex split seals which minimize leakage across the apex seals to thereby allow operation at relatively high pressure values.

Abstract: A fluid machinery driven equipment such as a rotary pump has a simple structure and high efficiency with a small size and low cost. The driven equipment includes a tubular casing having an inner surface which is substantially elliptic in shape, a rotor provided in the tubular casing where the rotor having a first arm provided with a rotatable piston at its end and a second arm in perpendicular to the first arm provided with a rotary plate at its end, and a rotary shaft provided in the tubular casing and connected to the rotor where at least one end of the rotary shaft is projected from the tubular casing to be connected to the external force.

Abstract: A fluid machinery driven equipment such as a rotary pump has a simple structure and high efficiency with a small size and low cost. The driven equipment includes a tubular casing having an inner surface which is substantially elliptic in shape, a rotor provided in the tubular casing where the rotor having a first arm provided with a rotatable piston at its end and a second arm in perpendicular to the first arm provided with a rotary plate at its end, and a rotary shaft provided in the tubular casing and connected to the rotor where at least one end of the rotary shaft is projected from the tubular casing to be connected to the external force.

Abstract: A fluid machinery driven equipment such as a rotary pump has a simple structure and high efficiency with a small size and low cost. The driven equipment includes a tubular casing having an inner surface which is substantially elliptical in shape, front and rear covers for covering the tubular casing through fastening means, a rotary shaft provided in the tubular casing and is supported by the front and rear covers, and a rotor provided in the tubular casing and connected to the rotary shaft.

Abstract: A thermal engine utilizing a positive displacement rotary expander and preferably a positive displacement rotary compressor in conjunction with an external substantially steady-state thermal source, such as a continuous fuel combustor, the external source heating a high pressure gas that is directed from the thermal source to the rotary expander wherein the gases expand driving a rotor in the positive displacement rotary engine before discharge. An additional embodiment of the thermal engine includes a modified epitrochoidal chamber configuration for the compression cycle and the expansion cycle to utilize the total internal volume for each compression pulse and expansion pulse for obtaining improved thermal efficiency in a manner similar to super long stroke reciprocal piston engines.

Abstract: A triangle rotation engine, which comprises an oval rotor repeatedly performing Auto cycle inside a cylinder block, which defines therein three cylinder walls, for driving a crank shaft slidably linked with the oval rotor for an output of power through two axles and two fanshaped wheels pivotally connected with the crank shaft so as to achieve the performance of an internal combustion engine.

Abstract: A Wankel-type engine has a housing with a chamber therein having parallel, axially spaced side surfaces joined by an end surface which has a semi-circular contour in an axially longitudinal plane. A rotor, eccentrically mounted on a shaft carried by the housing for rotation in the chamber, has a pair of side portions adjacent to the chamber side surfaces and a plurality of lobes, each having an end portion which has a semi-circular configuration corresponding to the semi-circular contour of the chamber end surface. Multi-layer, self-expanding seals engaging the chamber end surface are carried by each rotor end portion, and the rotor side portions carry seals engaging the chamber side surfaces. Lubrication is supplied to the seals. The semi-circular chamber end surface is provided on a separate member mounted between a pair of housing members, or alternatively is provided on complimentary portions of a pair of housing members.

Abstract: An improved seal apparatus for a rotary machine including a rotary internal combustion engine. The machine generally comprises a rotor rotatably disposed in a circular working section in a hollow machine housing, a divider valve, and for an internal combustion engine a compression-expansion valve being rotatably secured in the housing and in sealing engagement with the rotor to divide the working space in the housing into an intake space and an exhaust space. The rotor of the machine has a piston formed thereon and the improved seal apparatus includes a plurality of seal bars in recesses between recessed connecting runners in the piston perimeter surface and urged into sealing relation with the inner wall of the housing.

Abstract: A rotary combustion engine having a planetary rotor and side intake ports is provided with an apex seal arrangement comprising two side-by-side seal members providing spaced sealing lines of contact at each rotor apex and wherein communicating grooves in the ends of the two apex seal members and existing corner seals connect the space between the apex seal members to the existing spaces between the side seals and oil seals on the rotor sides which periodically communicate with the side intake ports.

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 machine multi-piece apex seal arrangement having two arcuate main body segments with sliding tongue and slot engagement which are biased to pivot in opposite directions to engage an internal peripheral wall of the machine by a single spring that is positioned by a bar sliding on this wall and also having end segments that are wedged against the main body segments by the same spring to engage oppositely facing end walls in the machine.