Abstract: A gear pump according to the present invention is configured such that a first pump chamber comprises a first intake space into which a fluid is taken in and a first discharge space from which the fluid is discharged, in accordance with rotation of an internal gear and external gears, a second pump chamber comprises a second intake space into which the fluid is taken in and a second discharge space from which the fluid is discharged, in accordance with rotation of the internal gear and the external gears, the first intake space and the second intake space are provided to be symmetrical about a rotational center of the internal gear, and the first discharge space and the second discharge space are provided to be symmetrical about the rotational center of the internal gear.

Abstract: A rotary piston pump equipped with a motor having two counter-rotating rotary pistons. The two rotary pistons are housed in an oval pump housing. The two rotary pistons are arranged on a first output shaft and a second output shaft. The first output shaft and the second output shaft are driven and synchronized via at least one elastic element.

Abstract: A progressive cavity device and method of use are provided, the progressive cavity device comprising a hollow stator having a rotor shaft positioned therein. The rotor shaft is provided with rotating motion drive connections at both ends thereof.

Abstract: A fluid pump includes a fluid-tight housing containing two spaced, externally-toothed pulley wheels, an internally-toothed drive belt that wraps around and engages the teeth of the two pulley wheels and moves as they rotate, and a guide block in the space between the two pulley wheels. The housing includes a fluid outlet port adjacent where the drive belt engages a first of the two pulley wheels to discharge fluid pressed out from between the teeth of the drive belt, and a fluid inlet port adjacent where the drive belt disengages from the first pulley wheel. The guide block defines a first face that extends with the drive belt to a nip where the drive belt engages the first pulley wheel and a second face that includes a first portion which extends from the first face in an arc around the periphery of the first pulley wheel and a second portion which extends away from the periphery.

Abstract: A positive displacement fluid handling apparatus comprises a body including a closed loop tunnel with a circular cross section, laid out in an oblong geometry with two substantially semicircular sections of the tunnel respectively disposed at the two extremities thereof and respectively open to two ports, and a plurality of spherical balls with diameter closely matched to the diameter of the circular cross section of the closed loop tunnel disposed within the closed loop tunnel in a freely movable arrangement, wherein a star wheel disposed in conjunction with one of the two substantially semicircular sections of the tunnel in a rotatable arrangement about the axis of rotation disposed in a parallel and offset relationship to the central axis of radius of the substantially semicircular section of the tunnel feeds the spherical balls past the inlet port open to that substantially semicircular section of the tunnel.

Abstract: A rotary engine including a housing having a special planetary curved surface opening and including a drive shaft interconnected with a belt by a plurality of drive rollers. Chambers are formed between rotating planetary rollers which move within the opening and the belt. The belt has segmented lobes formed thereon which are moved about the drive rollers to compress the fluid in the chambers cyclically to perform work. An internal combustion rotary engine is disclosed in which a spark plug is secured to the housing at the point in the cycle where maximum pressure is developed in the chambers.

Abstract: An internal combustion engine is disclosed having valve means, ignition means, timing means and fuel distribution means configured for operation on a combustible mixture of fuel and air or other energy source. A rotor, consisting of loosely coupled rectangular segments, traverses a `figure 8` path within a rotor housing consisting of two overlapping hollow annuluses. The rotor, when contained in one of the annuluses, fully circumscribes that annulus. Traversal of one of the annuluses by the rotor results in intake of a fuel/air mixture, compression, ignition, power and exhaust cycles in successive revolutions. Traversal of the second annulus by the rotor transfers the orbital rotation of the rotor to a concentrically disposed power transfer shaft.

Abstract: A positive displacement pump includes a flexible endless belt 4 disposed around spaced, parallel drive rollers 8, 9 within a housing 2. The belt is non-extensible in the peripheral direction and carries elastically deformable teeth on its outer surface. The spaces between the teeth form conveying chambers 4b whose volumes vary in an expansion-contraction sense as the belt runs around a roller between inlet and outlet openings 11, 13 in the housing.