Bizarre Patents
Ballistic resistant body covering
A ballistic resistant body covering for protecting the torso, groin and neck area from ballistic missiles.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8186981 | Scroll compressor having a spring member pressing an eccentric shaft onto a slide face of a slide bush There is disclosed a scroll compressor having an object of stabilizing the moving of an orbit scroll while suppressing the start load of the scroll compressor. In the scroll compressor, a slide bush having a slide face forming a predetermined angle with respect to t... | 05/29/2012 |
| 8182253 | Multi-cylinder rotary compressor and refrigeration cycle equipment A rotary compressor, in which formulas Rc | 05/22/2012 |
| 8157553 | Scroll compressor having a shifted gravity center In a scroll compressor, a center of a turning scroll body is shifted with respect to a drive central axis so that a distance between a gravity center and the drive central axis in a turning scroll becomes smaller than a predetermined allowable value set based on the... | 04/17/2012 |
| 8152505 | Rotary expansible chamber device A rotary expansible chamber device includes intersecting, two-piece vanes that provide expansion/compression chambers as the vanes rotate about a central axis of a rotor housing. The rotor housing has an inner contour defined by a conchoid of rhodonea having a shape... | 04/10/2012 |
| 8128389 | Positive-displacement machine design (variants) In the first variant, the device comprises a stator and a rotor eccentrically mounted in the stator. A planetary train consists of large and small gear wheels. The large gear wheel is fixedly arranged on the outside of the small gear wheel and it is enabled to run a... | 03/06/2012 |
| 8096795 | Oil pump rotor An oil pump rotor for use in an oil pump includes an inner rotor having (n: “n” is a natural number) external teeth, an outer rotor having (n+1) internal teeth meshing with the external teeth, and a casing forming a suction port for drawing a fluid and a dischar... | 01/17/2012 |
| 8038422 | Gear pump with a valve arranged between a suction side and a pressure side of the gear pump Gearwheel pump, having a housing with at least two intermeshing gears with shafts supported by slide bearings lubricated with pumping medium (M) fed from a suction side to a pressure side, a return duct which leads pumping medium which flows outward through the plai... | 10/18/2011 |
| 7988436 | Vane machine A vane machine includes a housing with a inlet port and an outlet port, a rotor mounted in a cavity of the housing. The rotor has a faceplate and a guide cylinder mounted eccentrically on an end surface of the housing opposite to the faceplate. The guide cylinder is... | 08/02/2011 |
| 7722344 | Impeller-drive shaft construction for a fuel pump A fuel pump (10) supplying fuel to an internal combustion engine includes an electric motor (14), a shaft (16) driven by the motor, and a pump assembly (18) including a pumping element (20) mounted on the shaft. A fuel pump improve... | 05/25/2010 |
| 7625191 | Rotary displacement machines having rotors of asymmetrical profile Rotary displacement machine having a housing and at least two twinned rotors of asymmetrical profile, the twinned rotors each made of a core on which projects a helicoidal thread which extends above the core like a tooth. The helicoidal thread having a first predete... | 12/01/2009 |
| 7588429 | Oil pump rotor assembly An oil pump rotor assembly is disclosed. An inner rotor formed with n external teeth is based on cycloid curves which are generated by a first circumscribed-rolling circle and a first inscribed-rolling circle by rolling the first circumscribed-rolling circle and fir... | 09/15/2009 |
| 7553143 | Lobe pump system and method of manufacture A method of manufacturing a rotor to be used in a dual-rotor lobe pump system for pumping a material at a periodic rate is provided. The method includes selecting a desired periodic flow rate for the material, selecting a number of lobes for the rotor, and selecting... | 06/30/2009 |
| 7520738 | Closed system rotary machine A closed system rotary machine has an inner shaped element (1) and an outer shaped element (2) which define therebetween cavities or capsules having a variable volume (V1, V9). The contact points which define the capsules (C1... | 04/21/2009 |
| 7476093 | Oil pump rotor assembly A rotor pump assembly is disclosed which reduces noise emitted from an oil pump while preventing pumping performance and mechanical efficiency thereof from being decreased by properly forming the profiles of teeth of an inner rotor and an outer rotor which are engag... | 01/13/2009 |
| 7458791 | Rotary working machine provided with an assembly of working chambers with periodically variable volume, in particular a compressor Rotary working machine provided with an assembly of working chambers with periodically variable volume, in particular a compressor, consisting of a stator with a controlling cam and a surrounding cylindrical rotator, with which are connected working elements, rotati... | 12/02/2008 |
| 7338266 | Screw pump and method of operating the same A screw pump includes a pair of screw rotors (2a, 2b) having teeth which are held in mesh with each other for drawing and discharging a fluid by rotating the screw rotors (2a, 2b) synchronously in opposite dire... | 03/04/2008 |
| 7335005 | Gear pump with prestressed gear teeth A gear pump, in particular for pumping material such as rubber mixes, includes an enclosure in which a central gear wheel and two peripheral gear wheels rotate. Teeth of the central gear wheel mesh with teeth of both peripheral gear wheels to pump material from an i... | 02/26/2008 |
| 7320579 | Roots type fluid machine A roots type fluid machine includes a housing, a pair of parallel rotary shafts and two-lobe rotors. Each rotor includes two lobe portions and two well portions. Each lobe portion has a profile of convex arc with a radius R and each well portion has a profile of con... | 01/22/2008 |
| 7300267 | Unit for delivering fuel to an internal combustion engine A roller cell pump having a shaped sliding surface composed of elliptical portions results from two different equations. The function of the unit is improved because the equations are modified and include adaptable parameters, so that by adaptation of the parameters... | 11/27/2007 |
| 7255545 | Double-lobe type rotor design process A double-lobe type rotor design process includes a process for forming a defined rotor and a process for forming a conjugate rotor, wherein the defined rotor and the conjugate rotor intermesh and conjugate to each other. The rotor profile curves suitably for the com... | 08/14/2007 |
| 7244114 | Scroll compressor In a scroll compressor, an outer wall curve of a scroll lap of a fixed scroll and an inner wall curve of a scroll lap of an orbiting scroll are formed of involute curves whose basic circle radius is defined as “a”, an inner wall curve of the scroll lap of the fi... | 07/17/2007 |
| 7237989 | Milling method used for producing structural components A milling method is for producing milled structural components of materials that are difficult to machine by chip-cutting. A milling tool with a tool radius is rotationally driven about an axis of the milling tool to ensure a central rotation thereof, whereby a refe... | 07/03/2007 |
| 7226279 | Gerotor mechanism for a screw hydraulic machine The invention relates to gerotor mechanisms for screw downhole motors used for drilling oil and gas wells, to screw pumps for producing oil and pumping fluids and to general purpose screw motors. The profiles of a rotor (3) and stator (1) are outlined ... | 06/05/2007 |
| 7198845 | Shaped trilobal particles An elongate, shaped particle having three protrusions each extending from and attached to a central position aligned along the central longitudinal axis of the particle, the cross-section of the particle occupying the area encompassed by the outer edges of six outer... | 04/03/2007 |
| 7188621 | Portable ventilator system A portable ventilator uses a ROOTS-type blower as a compressor to reduce both the size and power consumption of the ventilator. Various functional aspects of the ventilator are delegated to multiple subassemblies having dedicated controllers and software that intera... | 03/13/2007 |
| 7147445 | Turntable with turning guide A gerotor mechanism is used to guide the rotation of a turntable having a Reuleaux triangle shape. In one version, the mechanism includes a gerotor having three lobes, and the gerotor guide has a guide profile including four recesses for receiving the lobes of the g... | 12/12/2006 |
| 7137797 | Turntable with gerotor A gerotor mechanism is used to guide the rotation of a turntable having a Reuleaux triangle shape. The mechanism includes a gerotor having three lobes; the gerotor guide has a guide profile including four recesses for receiving the lobes of the gerotor. Rotation is ... | 11/21/2006 |
| 7118359 | Oil pump rotor An oil pump rotor assembly for an oil pump which enables reduction of noise while preventing pump performance and mechanical efficiency from being degraded. In this oil pump rotor assembly, the tooth tip profile of each of at least one of external teeth of an inner ... | 10/10/2006 |
| 7114931 | Rotary pump A rotary pump includes a stator housing and a rotor. The stator housing preferably has an oblong inner surface. The rotor, which is disposed in the stator housing, preferably has a substantially circular outer surface within which a plurality of vane slots are defin... | 10/03/2006 |
| 7083402 | Rotating fluid machine A rotating fluid machine is provided with a rotor chamber, a rotor accommodated in the rotor chamber, and vanes guided by vane grooves formed in the rotor. A U-shaped vane seal is held by a seal holding groove formed in the end face of each of the vanes. The opposit... | 08/01/2006 |
| 7040872 | Rotary fluid machinery Pistons (41) are slidably received in a plurality of cylinders (39) disposed radially in a rotor (31), and a plurality of vanes (42) cooperating with the pistons (41) are disposed radially in the rotor (31), so that a vane c... | 05/09/2006 |
| 6988876 | Scroll type fluid machinery A scroll type fluid machinery includes first and second fluid volume changing mechanisms. The first fluid volume changing mechanism includes a first stationary scroll and a first orbiting scroll, and the first orbiting scroll is associated with the first stationary ... | 01/24/2006 |
| 6964560 | Vacuum pump An object of this invention is to prevent drop of life of a bearing by an axial force when using a pump as a compressor. In a vacuum pump 1 compressing and discharging gas in a direction of a rotor axis by rotation of screw rotors 3, 4 engaged together... | 11/15/2005 |
| 6929458 | Oil pump rotor An internal gear oil pump rotor assembly which enables the construction of an oil pump that is compact and has high performance. In the oil pump rotor assembly having an inner rotor and an outer rotor, the number of teeth “Zi” of the inner rotor with trochoid to... | 08/16/2005 |
| 6923628 | Vacuum pump A vacuum pump, in particular for brake booster systems in motor vehicles, with a drivable rotor via which a blade in a housing can be set in rotation is proposed. The vacuum pump is distinguished by the fact that the rotor consists of plastic and is formed as one pi... | 08/02/2005 |
| 6890164 | Internal gear pump A noise-reduced internal gear pump incorporating an inner rotor having an addendum formed by a smooth curve and a dedendum formed by a hypocycloid. The tooth profile of the outer rotor is determined by the following steps. The center Oi of an inner rotor 1 is... | 05/10/2005 |
| 6887056 | Oil pump rotor An oil pump emits less noise by properly forming the profiles of teeth of an inner rotor and an outer rotor thereof which engage each other, whereby decreasing sliding resistance and rattle between the tooth surfaces of the rotors. The rotors of the oil pump are for... | 05/03/2005 |
| 6872062 | Scroll compressor To provide a scroll compressor that has a lower sliding friction loss and high compression efficiency, taking the diameter of a main shaft (61) as Dm and the diameter of a crank shaft (62) as Dc, the crank shaft (62) formed at one end of the mai... | 03/29/2005 |
| 6766783 | Rotary internal combustion engine A rotary internal combustion engine has a shaft, a compression chamber, an ignition chamber, a center wall, a first rotor, and a second rotor. The shaft is fixed to the rotors while being rotatably mounted to the compression and ignition chambers. The compression ch... | 07/27/2004 |
| 6761143 | Coupling structure for expansion unit output shaft and driven-side transmission shaft An expansion unit (4) for converting an expansion energy of pressure-increased steam into a rotation energy of an output shaft, wherein a cover member (26) is provided on the casing outer surface of the expansion unit (4). The cover member (2... | 07/13/2004 |
