Class 418/195 - Non-parallel axis

Subclass of Class 418 - Rotary expansible chamber devices
Definition: Apparatus in which the axes of a working member and at least
No. of patents: 100
Last issue date: 01/31/2012

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Number	Title	Issue Date
8105059	Compressor with screw rotor and gate rotor with inclined gate rotor center axis A compressor includes a screw rotor and a gate rotor arranged to form a compression chamber. The screw rotor has an outer circumferential surface with at least one groove portion. The gate rotor has a plurality of tooth portions. Preferably, a first plane contains t...	01/31/2012
7699592	Rotary piston machine A rotary piston machine includes a driving part driven by an electric motor, and a driven part that have mutually engaging end-face denticulation for delivering a medium, the driving part and the driven part being housed in a machine housing and connected to the mac...	04/20/2010
7390181	Rotating piston machine A rotary piston machine has a driving part which is driven by an electric motor and a driven part which are geared together and engage one another for the delivery of a medium, the driven part being put under load in the direction of the driving part and the driven ...	06/24/2008
7364415	Twin piston fluid compressor or pump apparatus with an annular bore housing An apparatus to pump fluid comprises an annular bore (12) and at least one pair of pistons (15, 16) which travel along the bore (12). The pistons (15, 16) can be releasably locked to a rotating plate like member (14) to travel thro...	04/29/2008
7351047	Swash-plate variable volume chamber-type fluid machine The present invention provides an improved swash plate type variable capacity fluid machine which is fluid-tight, simple in structure, quiet in operation, and highly durable, yet without increasing its size, weight, and the amount of power loss. The swash plate type...	04/01/2008
7341041	Toroidal engine with variable displacement volume A novel rotary engine of the kind having a toroidal cylinder and a set of pistons on a rotating circular piston assembly provides instantaneous adjustment of the displacement volume of the engine by varying the intake and expansion stroke length on the circular path...	03/11/2008
7318712	Rotary piston machines comprising a displaceable inner housing In a rotary piston machine with an inner housing and rotors, the axes of the rotors are disposed at an angle to one another in order to equalize manufacturing tolerances and to reduce gap losses of such machines. ...	01/15/2008
7305963	Blade-thru-slot combustion engine, compressor, pump and motor This is simple and efficient rotary machine that can be implemented as compressor, pump, motor and mainly as internal combustion engine. The engine comprises a housing, a rotor(s) with a radial blade(s), a chamber(s) swept by the blade(s), an intersecting planar val...	12/11/2007
7275920	Rotary piston machine A rotary piston machine, with a driving part and a driven part, which are geared together, is proposed, for which these parts 17 and 18 run on a common stationary main axle 8. ...	10/02/2007
7225789	Sealing intersecting vane machines The invention provides a toroidal intersecting vane machine incorporating intersecting rotors to form primary and secondary chambers whose porting configurations minimize friction and maximize efficiency. Specifically, it is an object of the invention to provide a t...	06/05/2007
7171941	Positive displacement rotary device and method of use A positive displacement rotary device and method of use are provided. The rotary device includes coupled chamber halves with a drive disc having at least one drive plate rotatably engaged with the drive disc. The drive disc is mounted on a drive shaft and positioned...	02/06/2007
7162993	Intersecting vane machines The invention provides a toroidal intersecting vane machine incorporating intersecting rotors to form primary and secondary chambers whose porting configurations minimize friction and maximize efficiency. Specifically, it is an object of the invention to provide a t...	01/16/2007
7153112	Compressor and a method for compressing fluid A compressor and a method for compressing fluid according to which a liner is disposed on the inner wall of a housing defining a bore. At least one slot and at least one discharge port are provided in the liner. A rotor is rotated in the housing with its outer surfa...	12/26/2006
7097437	Rotary fluid machine A rotary fluid machine is provided that includes a rotor chamber (14), a rotor (41), vanes (48) guided by vane channels formed in the rotor (41), and pistons (47) slidably fitted in cylinders (44) provided in the rotor (4...	08/29/2006
7080976	Volumetric rotary machine A fluid flow displacement rotary machine is provided which includes a casing including an inclined rib on an inner surface thereof, and a shaft provided coaxially with the casing such that the shaft and the casing are rotatable with respect to each other. A disk is ...	07/25/2006
7059294	Orbital engine An engine is disclosed including at least one piston which is positioned within a toroidal piston chamber. A method of operating an engine is disclosed wherein a piston is advanced in a toroidal piston chamber past a first valve and the first valve is closed to form...	06/13/2006
6941900	VAL rotary engine A rotary engine has a spherical enclosure serving as a combustion chamber, a first baffle inside the combustion chamber slideable along a groove formed in the spherical enclosure, and a second baffle disposed in the combustion chamber which is in sealing engagement ...	09/13/2005
6901904	Sealing intersecting vane machines The invention provides a toroidal intersecting vane machine incorporating intersecting rotors to form primary and secondary chambers whose porting configurations minimize friction and maximize efficiency. Specifically, it is an object of the invention to provide a t...	06/07/2005
6896501	Single-screw compressor Present invention provides a single screw compressor from which only a small amount of gas to be compressed leaks and which can be manufactured at low costs. There are provided a screw rotor 1 having six grooves 2, 2, . . . and a gate rotor 4 ha...	05/24/2005
6887057	Minimal contact seal positive displacement device method and apparatus A positive displacement device that incorporates two rotors that are offset from collinear and each comprising a first and second set of vanes where the engagement surfaces of the first set of vanes are adapted to only engage when the rotors are in the top dead cent...	05/03/2005
6884051	Rotary fluid machinery An outer periphery of an output shaft integral with a rotor of an expander of a vane-type operated by a high-pressure vapor is supported at its opposite ends by a static-pressure bearing mounted at one end thereof in a floated state provided by a liquid film of a pr...	04/26/2005
6739852	Rotary engine and method for determining engagement surface contours therefor An improved rotary engine and method for determining the contours of the sealing surfaces thereof. The improved engine provides for maintaining a predetermined, optimal gap between the sealing surfaces during rotation. The gap may be parallel or angled, and may be p...	05/25/2004
6729295	Rotary piston engine A rotary piston engine having at least two rotary pistons formed as gearwheels mounted in a rotatable fashion on mutually perpendicular axes in a housing that provides a closed seal for the pistons on both faces as well as around their circumferences, is at one poin...	05/04/2004
6634873	Method for determining engagement surface contours for a rotor of an engine An improved rotary engine and method for determining the contours of the sealing surfaces thereof. The improved engine provides for maintaining a predetermined, optimal gap between the sealing surfaces during rotation. The gap may be parallel or angled, a...	10/21/2003
6632145	Fluid displacement pump with backpressure stop The fluid displacement pump enables substantially continuous pumping from a low-pressure side to a high-pressure side substantially without any backflow or backpressure pulsations. Liquid or gas is injected to the high-pressure side by way of mutually int...	10/14/2003
6547545	Rotary machine for a compression or an expansion of a gaseous working fluid A rotary machine for a compression or an expansion of a gaseous working fluid comprises a machine housing (10), a rotor (11) which is rotatably mounted within said housing and which, in its peripheral outer surface, is provided with at least one helically...	04/15/2003
6497564	Balanced rotors positive displacement engine and pump method and apparatus A machine to convert energy providing positive displacement of a fluid contained in operating chambers. The machine can either increase the pressure of a fluid or extract energy from a pressure differential to a rotating shaft. The machine having desirabl...	12/24/2002
6447275	Screw pump A screw pump includes a screw rotatably arranged in a housing, the threads of which are partially in engagement with a rotatable sealing device having radial sealing discs, whereby the screw area of the screw, including thread grooves and thread walls, ar...	09/10/2002
6398532	Single screw compressor This invention relates to a single screw compressor comprising a body housing a spindle, a screw and two pinions for engaging the screw, wherein both said pinions and said screw have unequal-width teeth, the diameter along said screw in an outer profile i...	06/04/2002
6332271	Method for making rotors A method for making rotors for screw-type machines with a plunge-cut turning method in which an approximately rectangular groove is formed approximately at a center of a work piece with trilateral machining, a groove is cut radially deeper by trilateral m...	12/25/2001
6135743	Rotary piston pump This invention may find use in applications such as pumps and other machines, it solves the problem of reduction of hydrodynamic resistance multiply and increases the capacity. The offered mechanim comprises of disc-shaped housing (1) with through hole (2...	10/24/2000
6106241	Single screw compressor with liquid lock preventing slide A single screw compressor includes two gaterotors with associated capacity controller, at the start of the compressor one capacity controller is in a fully unloaded position, and the other capacity controller includes a slide, a thrust mechanism for movin...	08/22/2000
6036463	Rotary positive displacement engine An engine has a pair of rotors, both housed within the same housing. The housing has an interior cavity which is preferably spherical but need only be partially spherical, the remainder at least having rotational symmetry. Each rotor is mounted on an axis...	03/14/2000
5993182	Reversible converter of direction of movement and device for displacing volumes using said converter A reversible converter of direction of motion, in which all geometric axes of rotating parts cross each other at one point, comprises: a body; a shaft, rotatably mounted in the body; a guide rigidly connected to the shaft and made in the form of a body of...	11/30/1999
5890884	Screw-type compressor with liquid lock protection A rotary compressor of the type provided with a screw (1) and pinion gear (4) is protected from liquid lock effects by disc spring (17) which applies on the pinion gear shaft (11) a pressure higher than the maximum thrust applied on the pinion gear during...	04/06/1999
5782624	Fluid compression/expansion machine with fluted main rotor having ruled surface root Fluid compressor or expander having a main rotor with discrete arcked-helical flutes that have ruled surface roots that match the predominantly planar tips of the teeth of the associated gate rotors and provide effective fluid sealing as the gate rotor te...	07/21/1998
5755196	Rotary positive displacement engine An engine has a pair of rotors, both housed within the same housing. The housing has an interior cavity which is preferably spherical but need only be partially spherical, the remainder at least having rotational symmetry. Each rotor is mounted on an axis...	05/26/1998
5513969	Rotary piston machine having engaging cycloidal gears The invention comprises a rotary piston machine, which functions as a pump, compressor or engine, and in which the cogs (45) of teeth (46) of a rotating control part travel over a cycloidal surface (44) of a cycloidal part (42) in order to define work cha...	05/07/1996
5474043	Helicotoroidal vane rotary engine An internal combustion engine has a ring-shaped stator with a plurality of thin slits. A rotor, having a plurality of helicotoroidal troughs formed on its inner surface, encloses the stator. A planar vane wheel, having a plurality of radially extending va...	12/12/1995
5435704	Capacity and volume ratio control valve assembly Volume ratio and capacity are controlled by slides which are rail guided. The slides are pressure-balanced, axillay and radially. The volume ratio slide has a piston balancing arrangement. The capacity slide has suction pressure acting equally on all side...	07/25/1995

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Class 418/195 - Non-parallel axis