Quotables
"The Americans have need of the telephone, but we do not. We have plenty of messenger boys."
Sir William Preece, chief engineer, British Post Office ; 1878
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 |
| 8133045 | Self-aligning pump rotor and methods A rotary fluid device having a housing that defines a pumping chamber, a shaft disposed in the housing, and a rotor disposed in the pumping chamber and engaged with the shaft. The rotor includes a body which defines a bore that includes an oblique tapered surface. A... | 03/13/2012 |
| 7828537 | Rotary engine with inlet and outlet valves A rotary engine is disclosed, which may include a housing having at least one inlet valve and at least one outlet valve. The rotary engine may also include at least one chamber coupled to the housing and to the at least one inlet valve, a generally cylindrical drive... | 11/09/2010 |
| 7686602 | Slippers for rollers in a roller vane pump A roller vane pump that uses slippers on its rollers to create multiple seals. The roller vane pump has a fixed cam ring that has a rotor within. The rotor has openings that receive rollers that rotate about the inside of the cam ring. Each roller has a slipper rota... | 03/30/2010 |
| 7607907 | Roller vane pump A roller vane pump for fluid includes a carrier which is rotatable in a housing about an axis of rotation, the carrier carrying a plurality of roller vanes which are each received in a respective slot which extends inwardly of a periphery of the carrier and permits ... | 10/27/2009 |
| 7371053 | Two-stage hydraulic pump A two-stage hydraulic pump includes a rotor, a ring, and a plurality of rollers disposed in slots formed on the rotor. The pump has two inlet ports and two outlet ports, which are disposed inwardly and outwardly, respectively, of the rollers. A valve mechanism is in... | 05/13/2008 |
| 7350501 | Planetary rotary internal combustion engine An apparatus for a rotary internal combustion engine. The engine has three rotating members that orbit about the center of a three-armed rotor as the rotor rotates within a housing with three lobes. The tips of the rotating members engage the lobes and a circular cu... | 04/01/2008 |
| 7172039 | Down-hole vane motor The present invention generally relates to an apparatus and method for use in a wellbore. In one aspect, a downhole tool for use in a wellbore is provided. The downhole tool includes a housing having a shaped inner bore, a first end and a second end. The downhole to... | 02/06/2007 |
| 7073477 | Gorski rotary engine A rotary engine is provided with solid vanes which extend through the rotor and engage opposing interior wall portions of the stator housing. A series of grooves in the interior wall permit the expanding exhaust gases to by-pass the minimal surface area of vanes pro... | 07/11/2006 |
| 7044102 | Planetary rotary internal combustion engine An apparatus for a rotary internal combustion engine. The engine has three rotating members that orbit about the center of a three-armed rotor as the rotor rotates within a housing with three lobes. The tips of the rotating members engage the lobes and a circular cu... | 05/16/2006 |
| 6932047 | Planetary piston rotary engine An apparatus for a rotary internal combustion engine. The engine has three rotating members that orbit about the center of a three-armed rotor as the rotor rotates within a housing with three lobes. The tips of the rotating members engage the lobes and a circular cu... | 08/23/2005 |
| 6857862 | Roller vane pump A fixed displacement pump includes a housing having a cavity, an inlet, and an end cap with alignment portions therein. A cam ring pivotally associated within the cavity includes adjustment portions. The cam ring is aligned in a fixed position via a pin inserted thr... | 02/22/2005 |
| 6835056 | Roller vane pump incorporating a bearing bush Roller vane pump, in particular suited for pumping fluid in a continuously variable automatic transmission of a motor vehicle, provided with a pump housing accommodating a substantially cylindrical carrier, which is rotatable about a central axis, and a cam ring enc... | 12/28/2004 |
| 6699025 | Roller vane pump A roller vane pump, in particular suited for pumping fluid in a continuously variable automatic transmission of a motor vehicle, is provided with a pump housing (12) accommodating a carrier (4) rotatable around a central axis (4a) of the carrier in a dire... | 03/02/2004 |
| 6676385 | Compressor assembly A rotary device containing a housing having a curved inner surface with a profile equidistant form a trochoidal curve, an eccentric mounted on a shaft disposed within the housing, a rotor mounted on the eccentric shaft which contains at least three sides,... | 01/13/2004 |
| 6672065 | Multiple stage compressor with rotors using rollers A multistage compressor assembly containing at least two guided rotor compressor stages, each of which contains an eccentric mounted on a shaft located within a housing, a rotor mounted on the eccentric shaft which contains at least three intersecting fac... | 01/06/2004 |
| 6659744 | Rotary two axis expansible chamber pump with pivotal link This invention relates to expansible chamber positive displacement pumps, motors, and engines and includes variable displacement features. It provides a different method of making vane, piston, and roller abutment pumping devices which has benefits in sea... | 12/09/2003 |
| 6607371 | Pneudraulic rotary pump and motor Expansible chamber apparatus for a positive displacement, high volume, low friction, reversible rotary pump for gases and/or liquids. Two or more chambers are provided, defined in part by one or more small abutments that move radially in a slot to switch ... | 08/19/2003 |
| 6561777 | Downhole roller vane motor and roller vane pump A roller vane motor for downhole drilling comprises a housing and a rotor. The housing contains wing deflector cams that divide the space between the housing and the rotor into a high-pressure chamber and a low-pressure chamber. The housing at one of its ... | 05/13/2003 |
| 6503072 | Pressure articulated positive displacement, single expansion rotary engine A positive displacement single expansion steam expander engine. Cylinder heads are fixed to the wall of the engine. A rotatable power shaft assembly has a plurality of nests. Received in each of the nests is a free-floating piston (nonengaged) having lobe... | 01/07/2003 |
| 6499976 | Downhole roller vane motor A roller vane motor having a housing and a stator positioned on an inside surface of the housing. The stator has an internal wall with an inlet port and an outlet port and the portion of this internal wall at the outlet port tapers open at an angle of les... | 12/31/2002 |
| 6464482 | Mechanically driven roller vane pump The invention relates to a roller vane pump suitable for pumping transmission fluid in an automatic transmission for motor vehicles. The pump is provided with a pump housing (2), a rotatable carrier (3) being located in the interior of the pump housing (2... | 10/15/2002 |
| 6447277 | Mechanically driven roller vane pump with channels between corresponding cam and carrier chambers The invention relates to a roller vane pump suitable for pumping transmission fluid in an automatic transmission for motor vehicles. The pump is provided with a pump housing (2), a rotatable carrier (3) being located in the interior of the pump housing (2... | 09/10/2002 |
| 6416303 | Mechanically driven roller vane pump with aperture end parts providing for gradual pressure changes in the pump chambers The invention relates to a roller vane pump suitable for pumping transmission fluid in an automatic transmission for motor vehicles. The pump is provided with a pump housing (2), a rotatable carrier (3) being located in the interior of the pump housing (2... | 07/09/2002 |
| 6413066 | Mechanically driven roller vane pump with aperture end parts providing for gradual pressure changes in the pump chambers The invention relates to a roller vane pump suitable for pumping transmission fluid in an automatic transmission for motor vehicles. The pump is provided with a pump housing (2), a rotatable carrier (3) being located in the interior of the pump housing (2... | 07/02/2002 |
| 6398528 | Dual lobe, split ring, variable roller vane pump A dual lobe, split ring, variable displacement roller vane pump is provided for supplying an aircraft engine varying amount of fuel. In a preferred application, the pump is used with a gas turbine engine. The pump includes a housing having an inlet and an... | 06/04/2002 |
| 6382924 | Mechanically driven roller vane pump with enlarged surface area of the apertures The invention relates to a roller vane pump suitable for pumping transmission fluid in an automatic transmission for motor vehicles. The pump is provided with a pump housing (2), a rotatable carrier (3) being located in the interior of the pump housing (2... | 05/07/2002 |
| 6375445 | Roller vane pump having a partly curved vane slot The invention relates to a roller vane pump for operating an automatic transmission for motor vehicles. The pump is provided with a pump housing (12), a rotor (4), a cam ring (2) and roller elements (7), which define a number of pump chambers (13). Fluid ... | 04/23/2002 |
| 6312243 | Roller vane pump having straight line segments on the rotor The invention relates to a roller vane pump for operating an automatic transmission for motor vehicles. The pump is provided with a pump housing (12), a rotor (4), a cam ring (2) and roller elements (7), which define a number of pump chambers (13). Fluid ... | 11/06/2001 |
| 6302666 | Downhole roller vane motor A roller vane motor for downhole drilling comprises a housing (1) and a rotor (2). The housing contains wing deflector cams (5) that divide the space between housing and rotor into chambers (8a, b). The rotor is equipped with cylindrical rollers (7) in re... | 10/16/2001 |
| 6250279 | Rotary internal combustion engine An internal combustion engine with an interior annular surface. A rotary piston mount rotates within an engine block interior space. Several spherical pistons are urged radially outwardly from the rotary piston mount by an urging means, and move in a radi... | 06/26/2001 |
| 6152711 | Roller vane pump having a suction port through the cam ring The invention relates to a roller vane pump for operating an automatic transmission for motor vehicles. The pump is provided with a pump housing (12), a rotor (4), a cam ring (2) and roller elements (7), which define a number of pump chambers (13). Fluid ... | 11/28/2000 |
| 5785509 | Wellbore motor system A drilling motor has been developed with a hollow tubular stator having at least one rod recess therein and an inlet port therethrough corresponding to each of the at least one rod recess; a rod movably disposed in each of the at least one rod recess; a t... | 07/28/1998 |
| 5733113 | Downhole roller vane motor and roller vane pump A roller vane motor for downhole drilling comprises a housing and a rotor. The housing contains outlet ports and wing deflector cams that divide the space between housing and rotor into chambers. The rotor is provided with recesses in its periphery and th... | 03/31/1998 |
| 5676532 | Adjustable one-way rotary liquid pumping device An adjustable one-way rotary liquid pumping device including a housing, a cover fixedly engaged with the housing, a first bearing a first bearing fitted in the housing, a second bearing fitted in the cover, an axle extending through the housing and the co... | 10/14/1997 |
| 5609479 | Forced compression type pump A forced compression type pump including a cylindrically shaped pump case, an eccentric rotating body shaft-supported on said pump case at an eccentric position relative to said pump case and a compressing and forcibly sending member movable in a radial d... | 03/11/1997 |
| 5601422 | Assembly for feeding fuel out of a supply tank to an internal combustion engine A fuel feed assembly with a feed pump of the roller-cell pump type, of which the pump rotor rotates eccentrically in a pumping chamber has a plurality of rollers which are guided in radial grooves of the disk-shaped pump rotor and are distributed uniforml... | 02/11/1997 |
| 5518379 | Downhole motor system A drilling motor has been developed with a hollow tubular stator having at least one rod recess therein and an exhaust port therethrough corresponding to each of the at least one rod recess; a rod movably disposed in each of the at least one rod recess; a... | 05/21/1996 |
| 5460496 | Wing motor having non-radial roller slats The present invention relates to a wing motor of the type suitable for use in down-hole drilling applications. The motor comprises a generally tubular casing 1, 2 and a rotor 4 mounted for rotation within the casing 1, 2 with a chamber 18 therebetween. Th... | 10/24/1995 |
| 5378111 | Motor vehicle fuel pump assembly with pressure relief orifice A fuel pump-suited for a Demand System motor vehicle fuel injection system includes a lower pressure vapor separating pump stage, a roller vane positive displacement high pressure pump stage, and a variable speed electric motor for driving an impeller in ... | 01/03/1995 |
| 5248246 | Orbiting ball meter-motor-pump 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 extr... | 09/28/1993 |
