Abstract: An oscillating variable displacement ring pump provides both positive and variable displacement. A housing circumscribes a pump chamber. The pump chamber encases an oscillating ring driven by a crank assembly. The ring encircles an end of the crank assembly. The crank assembly includes an annular spacer that rolls inside the ring. When the pump chamber is sealed, rotation of the crank assembly causes ring oscillation in the chamber. Ring oscillation creates vacuum pressure, which draws substances into pump chamber via an inlet port while pumping out substances of the pump chamber via an outlet port. A valve within the pump chamber contacts the ring and follows ring oscillation to help separate incoming substances from outgoing substances. The pump can include an adjustable internal by-pass means to control the volume and pressure of substances delivered by the pump.
Abstract: A vane pump may include an oval fixed portion of which an outer circumference may be oval, a rotation ring that may be rotatably disposed outside of the oval fixed portion with a gap and in which blade slots may be formed in a predetermined depth along a circular interior circumference of the rotation ring at a predetermined interval from each other, blades of which one end thereof may be slidably inserted into the blade slots respectively and of which the other end slidably contacts an outer surface of the oval fixed portion, an elastic member coupled to the rotation ring and elastically pushing the blades towards the oval fixed portion, and a drive portion connected to the rotation ring and rotating the rotation ring such that oil may be sucked through an expanding space that may be formed between at least two of the blades and oil may be pumped through a shrinking space that may be formed between at least two of the blades.
November 16, 2010
Date of Patent:
March 19, 2013
Hyundai Motor Company
Hang Cheol Cho, Jin Young Hwang, Seok Jin Kim
Abstract: A revolving piston rotary annular cylinder valved continuous combustion or flow expandable chamber devices, compressor and engine machine system with an outer toroid cylinder housing assembly having a central axis, having one or a plurality of balanced pistons with means for attachment to a rotor and radiating through the outer rotor assembly to contact or come within close tolerance of the interior surface of the outer housing at the other extreme of the pistons, whereby, a plurality of relatively air tight compartments are formed between the interior surface of the outer housing, the outer surface of the rotor assembly and the piston or plurality of pistons with the volume of said compartment varying as a function of the rotative position of the inner cylinder and rotor assembly in relation to the isolating valve.
Abstract: An engine or pump is described which has a round cylinder in cross section, the surface of the cylinder being a round toroidal tube in the rotary direction. The cylinder is made of two equal parts, one part fixed and one part rotating with each part meeting on a flat surface at a right angle to the driveshaft. Force exerted axially against the rotating cylinder part by a spring diaphram seals the cylinder where the two parts meet on the flat surface. The spring diaphram is pre-loaded by a thrust bearing in a pre-loading disk to apply force to the rotating part of the cylinder. Within the cylinder are one or more round toroidal section pistons that are attached to the rotating part of the cylinder by piston pins. A hinged internal cylinder abutment is actuated by the piston as the piston passes through the abutment section. Working fluid to the cylinder is controlled by an internal valve actuated by a cam-disk on the driveshaft.
Abstract: Rotary engine construction wherein a lobed rotor cooperates with unique retractable separators to divide the bore into work chambers, the rotor lobes or pistons performing the intake, compression, power and exhaust functions rapidly, efficiently and smoothly, and wherein the simplicity of construction allows the number of firings per rotor revolution, their sequence and the compression ratio to be readily selected for a particular end use. The engine further embodies novel intake and exhaust valves and actuating structure therefor, work chamber inactivation mechanism, and positive oil pumping means.
Abstract: A tubular housing having a circular inner surface provided with a plurality of recesses for receiving pistons movable pivotally between a position fully retracted in said recesses and a position projecting radially inward from the housing. A rotor is supported centrally in the housing for axial rotation and has peripheral cavities equal in number to the number of pistons in the housing and capable of receiving the pistons at predetermined intervals of rotor rotation to perform with the pistons the functions of steam intake, steam expansion and exhaust. The housing has steam intake ports and exhaust outlet ports operable in conjunction with the rotor and pistons to perform the engine functions. The pistons are moved inwardly into the cavities during certain operations of the engine by levers operatively connected to the rotor.
Abstract: A tubular housing having a circular inner surface provided with a plurality of recesses receiving pistons movable pivotally between a position fully retracted in the recesses and a position projecting radially inwardly from the housing. A rotor is rotatably supported centrally in the housing and has peripheral cavities equal in number to the number of pistons in the housing and capable of receiving the pistons in portions of their pivotal movement to perform with the pistons functions of fuel intake, fuel compression, firing and exhaust. The housing has fuel intake ports, spark plugs and exhaust outlet ports operable in conjunction with the rotor and pistons to perform the engine functions. The pistons are moved inwardly into the cavities during certain operations of the engine by levers operably connected to the rotor. The engine has coolant and oil circulating structure to cool it and to lubricate it. In addition, seals are associated with the pistons and rotor to prevent the escape of power.