Bizarre Patents
System for magnetically attaching templeless eyewear to a person
A system of eyewear that eliminates the need for hinges on the frames of the eyewear.
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 |
| 7988432 | Rotary compressor for changing compression capacity A rotary compressor has two compression capacities according to two different rotational directions of the driving shaft. The rotary compressor includes a driving shaft with an eccentric portion. A roller rotates on the shaft along an inner circumference of the cyli... | 08/02/2011 |
| 7950911 | Single stage root type-vacuum pump and vacuum fluid transport system employing the single stage root type-vacuum pump A single stage root type vacuum pump has a pair of outside air introduction holes formed in the vicinity of a phantom line in an inner wall surface within a range between intersecting points, where the intermediate position that is located between the center of a dr... | 05/31/2011 |
| 7871252 | Rotary compressor having two compression capacities A rotary compressor includes a driving shaft rotatable clockwise and counterclockwise, and an eccentric portion of a predetermined size; a cylinder forming a predetermined inner volume; a roller installed rotatably on an outer circumference of the eccentric portion ... | 01/18/2011 |
| 7854602 | Rotary compressor for changing compression capacity A rotary compressor for changing a compression capacity of the compressor includes a driving shaft being rotatable clockwise and counterclockwise, and having an eccentric portion of a predetermined size; a cylinder forming a predetermined inner volume; a roller inst... | 12/21/2010 |
| 7597547 | Variable capacity rotary compressor A rotary compressor having two different compression capacities is provided. The rotary compressor may include a driving shaft that is rotatable in both a clockwise and counterclockwise direction, and having an eccentric portion at an end thereof. The compressor may... | 10/06/2009 |
| 7588427 | Variable capacity rotary compressor A rotary compressor that has two compression capacities is provided. The rotary compressor includes a driving shaft having an eccentric portion and being rotatable in both clockwise and counterclockwise directions, a cylinder having a predetermined inner volume, and... | 09/15/2009 |
| 7427191 | Oil pump In an oil pump employing a cam ring, and inner and outer rotors in meshed-engagement, two housings are provided at opposite ends of the cam ring. A plurality of volume chambers are defined between inner and outer teeth of the rotors. Two axial holes are formed in th... | 09/23/2008 |
| 7382061 | Supercharger coupled to a motor/generator unit A device for handling and recovering of kinetic energy in a fluid is presented which basically features a bladed impeller (11). The impeller is operated by an electric engine (12) and acts as a centrifugal blower yielding energy to the air when the mai... | 06/03/2008 |
| 7374411 | Oil pump adapted to prevent leakage without using sealing member An oil pump is provided which includes a cam ring made of a material having a first line expansion coefficient, a pump element rotatably disposed in the cam ring and smaller in an axial length than the cam ring, a first housing member disposed on one of axially oppo... | 05/20/2008 |
| 7284968 | Bidirectional air pump A bidirectional air pump to selectively inflate or deflate an inflatable object has a housing, a pump assembly and a motor. The housing has a controller cover, a pump cover, and a motor cover. The pump assembly is mounted inside the housing and has a centrifugal pum... | 10/23/2007 |
| 7179069 | Motor compressor lubrication A rotary machine is powered by a drive shaft having a bore extending through it. A single piece lubricant flinger is disposed within the bore to form a lubricant pump. The lubricant flinger includes an upper plate located within the bore and a washer located adjacen... | 02/20/2007 |
| 7156623 | Electric oil pump apparatus An electric oil pump apparatus includes a pump housing a drive side communicating portion, a motor housing having a pump side communicating portion communicating with the drive side communicating portion, a bearing portion arranged at one of the drive side communica... | 01/02/2007 |
| 7018178 | Variable displacement pump and control therefore for supplying lubricant to an engine A control system for a variable displacement pump. The control system is operably associated with an engine control unit for passively or actively controlling the output of the pump in response to signals from the engine control unit. ... | 03/28/2006 |
| 6945040 | Ram moving method for hydraulic machine, ram movement controller, method for preventing trapping of axial plunger pump used for the machine, and the pump If an instruction to move a ram (5U) is issued, a ram instructed speed is instructed to be suppressed to a certain warming-up speed not higher than a target speed until a release speed determination section (75) determines that a moving speed of the ra... | 09/20/2005 |
| 6702703 | Lubrication pump for inter-axle differential An inter-axle differential assembly having a lubrication pump is provided. The pump is disposed between the input and output shafts of the differential within a bore defined by a side gear coupled to or integral with the output shaft. The pump includes a ... | 03/09/2004 |
| 6196814 | Positive displacement pump rotatable in opposite directions A compressor assembly including a compression mechanism, a rotating crankshaft operably coupled to the compression mechanism, the crankshaft provided with a longitudinally-extending oil conveyance passageway, the oil conveyance passageway in fluid communi... | 03/06/2001 |
| 6149410 | Reversible gerotor pump having magnetic attraction between the rotor and the reversing ring A reversible gerotor-type pump having an angularly moveable reversing ring rotatably supporting an internally toothed rotor which in turn cooperates with an externally toothed gear received within the rotor and rotatable therewith about an axis parallel t... | 11/21/2000 |
| 6017202 | Bi-directional gerotor-type fluid pump A bi-directional fluid pump for providing a source of pressurized fluid. The fluid pump includes a gerotor assembly, an inlet valve system, and an outlet valve system which work cooperatively to provide pressurized fluid during two directions of rotation.... | 01/25/2000 |
| 5901802 | Hydraulic passages for oil pump for speed reducer used in electric vehicles Hydraulic passages for an oil pump for a speed reducer used in electric vehicle include a first passage for connecting an inlet port of an oil pump to an oil reservoir through a first check valve, a second passage for connecting an outlet port of the oil ... | 05/11/1999 |
| 5802851 | Motor vehicle hydrostatic transmission system A hydrostatic transmission for a transaxle which contains two flanged mounting surfaces which are used to secure the transmission to the lower housing of the gear axle. A third point is used as a pilot diameter during assembly but is not required to secur... | 09/08/1998 |
| 5711408 | Reversible gerotor pump A reversible gerotor pump and a drivetrain subassembly including the reversible pump, wherein the pump includes inner and outer rotors located within an eccentric ring and also includes a drag spring mechanism, such as a band spring, positioned around and... | 01/27/1998 |
| 5702319 | Hydromechanical system for limiting differential speed between differentially rotating members A hydromechanical system for limiting differentiation between a first rotating member and a second rotating member in a drivetrain subassembly. The hydromechanical system comprises a clutch assembly for selectively coupling the first rotating member to ro... | 12/30/1997 |
| 5655983 | Hydromechanical system for limiting differential speed between differentially rotating members The invention provides a hydromechanical system for limiting differential speed between first and second rotating members of a vehicle drivetrain subassembly. The hydromechanical system comprises a casing disposed within a housing of the subassembly which... | 08/12/1997 |
| 5573388 | Eccentric pump with lock valve and with bidirectional rotational operation An eccentric pump with lock valve and with bidirectional rotational operation, mainly for lubricant circulation of drives comprises a stationary outer casing having two parallel side walls and a cylindrical inner surface between the side walls, and furthe... | 11/12/1996 |
| 5494421 | Scroll compressor having a gear oil pump accommodating reverse rotation A reliable scroll-type compressor is provided which, even when the compressor is rotated in the reverse direction by the erroneous connection of the power source terminals for example, is prevented from establishing a vacuum state within the compression c... | 02/27/1996 |
| 5476374 | Axially ported variable volume gerotor pump technology A gear pump including a body, a port plate, a pair of gerotor-type rotors, one rotor being connected to a shaft, and a retaining assembly operative on the port plate to rotatably couple it to the body. The retaining assembly permits adjustment of axially ... | 12/19/1995 |
| 5476373 | Reverse drive oil pump Lubricant is pumped into a lubrication system by an oil pump. Preferably the lubricant is drawn into the pump from an unagitated source. An eccentric pump rotor is received on the crankshaft and has a circumferentially extending recess. A radially extendi... | 12/19/1995 |
| 5366355 | Positive displacement pump A rotor rides on the shaft end and is eccentric with respect to the rotational axis of the shaft. The rotor rotates in the bore of a pivot ring and coacts therewith in the nature of a double action pumping such that there are two pumping cycles per revolu... | 11/22/1994 |
| 5334002 | Gerotor pump with shiftable rotor boss A gerotor pump comprises the usual lobed annulus 30 containing the lobed rotor (not shown in FIG. 2) which is journalled on cylindrical boss 36. The boss is free to turn on the eccentric pin 38 between positions controlled by limit pin 42 encountering end... | 08/02/1994 |
| 4944662 | Reversible geroter pump with pivoting carrier unidirectional flow A reversible unidirectional flow gerotor pump (FIG. 1) has an externally cylindrical internally lobed rotor (36) internally meshed with an eccentrically located externally lobed male rotor having a smaller number of lobes (40) and the annulus runs in a cy... | 07/31/1990 |
| 4743180 | Reversible gear-type pump A reversible gear-type pump providing constant fluid delivery direction on alternating drive direction in which an eccentric ring receiving the outer rotor is pivotal through 180° between two end positions by frictional engagement with the outer rotor wh... | 05/10/1988 |
| 4588362 | Reversible unidirectional flow rotary pump A gerotor pump is arranged for unidirectional flow irrespective of direction of rotation of the pump by arranging for displacement of the axis of eccentricity of the annulus and rotor upon drive reversal, the annulus being mounted in a carrier 14, FIG. 1,... | 05/13/1986 |
| 4578948 | Reversible flow vane pump with improved porting A reversible flow vane pump having a pump case with a pump chamber in which a rotor is mounted. The rotor has outwardly-opening slots which carry vanes which engage a cam ring and with fluid chambers between vanes. The cam ring can be adjusted to position... | 04/01/1986 |
| 4540347 | Gerotor pump A gerotor pump of n and n+1 type has the annulus and rotor located in a chamber with one wall provided by a floating coverplate held in place by a spring so that in the event of excess internal pressure the cover can lift to allow cross leakage between th... | 09/10/1985 |
| 4420292 | Bi-directional internal/external gear pump with advanced porting A bi-directional internal/external gear pump with advanced porting includes inlet and outlet ports symmetrical about a line perpendicular to the port centerline. An internal/external gear set is rotatable on parallel axes establishing the hydraulic center... | 12/13/1983 |
| 4392796 | Valve controlled reversible pump with anticavitation means The pump drive shaft may rotate in either direction. The pump discharges liquid from the same port, regardless of the direction of rotation. A receiving port on the pump mounting pad is aligned with that discharge port. The pump includes a base plate, a p... | 07/12/1983 |
| 4331421 | Reversible unidirectional flow pump with axial frictionally engaged recessed valve plate A reversible positive displacement rotary fluid pump comprising a rotor with either dual sliding vanes or a single vane defining pumping cavities of increasing and decreasing volume and having a single non-valved inlet for both directions of rotation, out... | 05/25/1982 |
| 4331420 | Reversible unidirectional flow pump with frictionally engaged axial valve plate A reversible positive displacement rotary fluid pump comprising a rotor with dual sliding vanes defining pumping cavities of increasing and decreasing volume and having a single non-valved inlet for both directions of rotation, outlet flow being controlle... | 05/25/1982 |
| 4247267 | Valve controlled reversible pump The pump drive shaft may rotate in either direction. The pump discharges liquid from the same port, regardless of the direction of rotation. A port on the pump mounting pad, which receives the discharge from the pump, may be in any of various locations. T... | 01/27/1981 |
| 4222719 | Reversible unidirectional fluid flow pump A reversible gerotor pump having unidirectional fluid flow therefrom dictated by a movable eccentric ring member 30 for positioning the rotor 46 of the pump gear-set 44 in either one of two axially eccentric positions depending upon the direction of rotat... | 09/16/1980 |
