Patents Examined by Emmanuel Sayoc
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Patent number: 6981849Abstract: The present disclosure relates generally to microelectronic technology, and more specifically, to an apparatus used for the cooling of active electronic devices utilizing electro-osmotic pumps and micro-channels.Type: GrantFiled: December 18, 2002Date of Patent: January 3, 2006Assignee: Intel CorporationInventors: Sarah E. Kim, R. Scott List, James Maveety, Alan Myers, Quat T. Vu, Ravi Prasher, Ravindranath V. Mahajan
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Patent number: 6979181Abstract: A method for controlling a motor (11) driving a pump (10) using a microcomputer (14) includes repeatedly sampling a parameter representative of motor torque over one cycle of operation of the pump (10), determining at least one point of maximum motor torque during said one cycle of operation of the pump (FIG. 4); applying speed commands to the motor (11) from a table of stored speed values in memory (19), said values being selected to provide relatively greater speed commands at points of lower motor torque and relatively lesser speed commands at points of higher pump pressure corresponding to higher motor torque, while maintaining at least a base speed command to prevent stalling; and synchronizing the first value in the table of stored values to the point of maximum motor torque.Type: GrantFiled: November 27, 2002Date of Patent: December 27, 2005Assignee: Aspen Motion Technologies, Inc.Inventor: Howard Keith Kidd
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Patent number: 6968688Abstract: A two-cycle hot-gas engine comprising an expansion piston in a heatable cylinder member and a compression piston in a coolable cylinder member. The expansion piston and the compression piston are disposed along a common axis.Type: GrantFiled: October 15, 2002Date of Patent: November 29, 2005Assignee: Enerlyt Potsdam GmbHInventor: Andreas Gimsa
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Patent number: 6960066Abstract: A water pump includes a rotation member, a hollow shaft portion having an opening on one end and connected to the rotation member for unitary rotating with the rotation member, an impeller connected to the shaft portion for unitary rotating with the shaft portion, a body defining a fluid chamber in which the impeller is rotated, a bearing for rotatably supporting the shaft portion on the body, a sealing member provided between the shaft portion and the body for sealing the fluid chamber and a cover portion for substantively closing the opening of the shaft portion.Type: GrantFiled: February 21, 2003Date of Patent: November 1, 2005Assignee: Aisin Seiki Kabushiki KaishaInventors: Yojiro Koga, Itsuro Hashiguchi, Masaki Chujo, Akihiro Katsumata, Takumi Hattori
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Patent number: 6960067Abstract: A reciprocating compressor comprises an inside stator formed by piling a plurality of stator cores to have an actinomorphic cylinder shape, which is press-fitted to a frame, and a streak protection member and a burr shielding ring installed between the inner aspect of the inside stator and corresponding outer aspect of the frame. Thereby the burr generating between the frame and the inner stator by a streak is prevented previously, and even if a burr is generated, this burr is locked in a burr escape unit in the burr-shielding ring. Therefore degrading of valve function and an abrasion of a sliding unit in a compressing unit by the burr generating is prevented and the vibration noise of the compressor is reduced by assembling the frame and the inside stator strongly.Type: GrantFiled: March 24, 2001Date of Patent: November 1, 2005Assignee: LG Electronics Inc.Inventors: Won-hyun Jung, Seong Yeol Hyeon, Gyoo Jong Bae, Jang Whan Kim
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Patent number: 6955531Abstract: A pump is capable of inflating and deflating an inflatable object. The pump includes a cylinder, a piston and a nozzle. The cylinder defines an outlet through which air can only flow into the cylinder and an inlet through which air can only flow from the cylinder. The piston reciprocates in the cylinder. The nozzle defines a first hole for communication with the inflatable object and a second hole for communication with the exterior. The nozzle is rotationally mounted on the cylinder between an inflating mode and a deflating mode. In the inflating mode, the first hole is communicated with the outlet, and the second hole with the inlet. In the deflating mode, the first hole is communicated with the inlet, and the second hole with the outlet.Type: GrantFiled: March 24, 2003Date of Patent: October 18, 2005Inventor: Scott Wu
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Patent number: 6955527Abstract: A two-way mounting mode air pump is constructed to include a housing affixed to an inflatable object, a battery case mounted in the housing, the battery case having a female coupling device and power output contacts in the female coupling device, and a motor pump selectively mounted in the housing in either of two directions to selectively pump air into or out of the inflatable object, the motor pump having a male coupling device for coupling to the female coupling device and power input contacts in the male coupling device for contacting the power output contacts.Type: GrantFiled: May 29, 2003Date of Patent: October 18, 2005Inventor: Stanley Yen
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Patent number: 6955526Abstract: The vacuum generator is capable of quickly and securely holding and releasing a work piece and capable of reducing amount of consuming compressed air. In the vacuum generator, a first nozzle and a second nozzle jet compressed air toward a diffuser nozzle. The second nozzle has a diameter greater than that of the first nozzle. Switching means switches a state of the vacuum generator between a first state, in which a small amount of air sucked from the vacuum port, and a second state, in which a large amount of air is sucked from the vacuum port. The first nozzle, the second nozzle and the diffuser nozzle are serially arranged in that order.Type: GrantFiled: March 19, 2003Date of Patent: October 18, 2005Assignee: Nihon Pisco Co., Ltd.Inventors: Kiyoyasu Yamazaki, Toshimasa Kitahara, Suminori Masuzawa, Masataka Funahashi
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Patent number: 6953325Abstract: A safety device limits the pressure in an axial-piston compressor with variable piston displacement. The compressor has as wobble plate or swash plate whose tilt angle can be variably controlled by the pressure differential between the high pressure in the discharge pressure zone and the pressure in the piston-drive chamber. The safety device consists of a valve arranged in a connector channel between the discharge pressure zone and the pressure zone of the piston-drive chamber. When the discharge pressure exceeds a given pressure limit, the safety device responds by allowing an increased flow of pressure medium from the discharge pressure zone to the piston-drive chamber. The influx of pressure medium into the piston-drive chamber causes a reduction of the tilt angle of the swash plate or wobble plate.Type: GrantFiled: January 6, 2003Date of Patent: October 11, 2005Assignees: LuK Fahrzeug-Hydraulik GmbH & Co., KG, Behr GmbH & Co.Inventors: Georg Weber, Michael Sickelmann, Tilo Schäfer, Christoph Walter, Hans-Joachim Krauss, Harald Raiser, Frank Obrist
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Patent number: 6948921Abstract: A vacuum pump (1, 30) has an inlet (5) and an outlet (6). Plug-in screw fittings (9) are connected with the inlet and the outlet. The plug-in screw fittings include a bore with an internal bevel (22) that receives a flexible connecting line (23), a chuck collet (19), and an O-ring (21) frictionally in a vacuum-tight relationship. In this manner, a more simple and versatile connection is provided between the vacuum pump and the connecting lines.Type: GrantFiled: August 23, 2000Date of Patent: September 27, 2005Assignee: Leybold Vakuum GmbHInventors: Rainer Hölzer, Hermann Boy
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Patent number: 6948920Abstract: A hand held an portable pump has a housing with an inlet on the bottom and an outlet on its side. A central tube extends up from the housing and has a bulb attached at its end. An inlet gate is positioned proximate the inlet to operate between a closed position in which the flow of liquid there through is inhibited and an open position in which liquid may flow through the inlet. The outlet has an outlet gate that is positioned to inhibit the flow of liquid into the housing in its closed position and to permit the flow of liquid out of the housing and into a discharge tube in the open position. The bulb is operated between an at rest position and a deflected or compressed position to urge fluid into and out of the bulb and in turn draw liquid through the inlet into the housing and to urge the liquid out of the outlet and into the discharge tube.Type: GrantFiled: December 19, 2002Date of Patent: September 27, 2005Assignee: SWS CorporationInventors: Michael A. Stoner, Tyler Merica
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Patent number: 6945759Abstract: A mounting end of an engine-driven accessory includes a longitudinally-extending neck having imperforate lateral surfaces defining a central bore. A flange having a mounting face is disposed at the end of neck. A plurality of generally radially extending drain passages are formed through the flange, which communicate with the central bore to form a fluid flow path between the bore and the exterior of the flange. A seal is provided for blocking selected ones of the drain passages while leaving the remainder of the drain passages open. The accessory may include a cover having an integral sealing rim which cooperates with a notch in a mating component to compress a portion of a resilient seal while simultaneously allowing for expansion of the remainder of the seal.Type: GrantFiled: May 16, 2003Date of Patent: September 20, 2005Inventor: Timothy H. Henderson
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Patent number: 6942472Abstract: A head pressure relief assembly for relieving pressure in the head assembly of an air compressor may include an exhaust valve post formed in the head assembly and an exhaust valve assembly comprised of a flapper valve. An aperture may be formed through the exhaust valve post for venting the head assembly prior to start of the compressor assembly. The flapper valve is capable of engaging the exhaust valve post to close the aperture at least partially for preventing flow from the head assembly through the aperture during the compression stroke of the compressor assembly piston. A head pressure relief assembly may also include an aperture disposed in the head assembly, a connecting tube therefor, or a check valve.Type: GrantFiled: March 31, 2003Date of Patent: September 13, 2005Assignee: DeVilbiss Air Power CompanyInventor: Edward A. Sieberg
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Patent number: 6935850Abstract: A dual-direction pump includes two cylinders arranged on opposite sides of a head portion and an inlet return-flow prevention device and a leakproof device mounted between the cylinder and the head portion for avoiding leakage at the juncture between the cylinder and the head portion or leakage induced by reverse flow in one of the cylinders in the case of a single-sided pumping operation in the other cylinder. The head portion has an outlet port to which an outlet return-flow prevention device is mounted. A knob is rotatably mounted to the outlet pot and a nut is fixed to the knob for selectively engaging an inflation valve to avert detachment. The outlet return-flow prevention device prevents reverse or return flow induced in the outlet port in order to reduce resistance caused thereby and enhances pumping efficiency.Type: GrantFiled: May 15, 2003Date of Patent: August 30, 2005Inventors: Ying-Che Huang, Chun-Ming Huang
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Patent number: 6929454Abstract: In a thick matter pump, especially for delivering concrete, comprising two delivery cylinders, it is known to provide two position sensors in one of the two cylinders for control of the pistons. However, leakage of hydraulic fluid can lead to an imbalance of the two cylinders. In the invention two position sensors (52?, 52?) are provided, which are arranged at a defined distance from one of the ends of the drive cylinders and which respond to a drive piston (30?, 30?) that is passing by. To prevent the formation of concrete clots inside the delivery cylinders (10) and to prevent the occurrence of a slamming when the drive pistons (30?, 30?) reach their end of travel, the invention provides that both position sensors (52?, 52?) are arranged at a distance from the piston rod-side ends of both drive cylinders (24?, 24?) and, in addition, a correcting sensor (54) is arranged at a defined distance from the piston head-side end of one of the drive cylinders (24?).Type: GrantFiled: June 28, 2001Date of Patent: August 16, 2005Assignee: Putzmeister AktiengesellschaftInventors: Werner Münzenmaier, Wolf-Michael Petzold
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Patent number: 6921253Abstract: A micropump has two chambers separated by an actuator for causing fluid to flow in the chambers. Each chamber is equipped with a ball that acts as a valve for allowing flow in a desired direction. The balls are heavier than the fluid being pumped, and reside at an interface between the chambers and passages feeding fluid into the chambers and provide a tight seal between the chambers and passages feeding the chambers when fluid pressure forces the fluid back toward the feeding passages.Type: GrantFiled: December 19, 2002Date of Patent: July 26, 2005Assignee: Cornell Research Foundation, Inc.Inventors: Michael Shuler, Aaron Sin
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Patent number: 6913448Abstract: A load-regulating device for scroll type compressors comprising a compressor housing, a bracket body, a partition block, a gliding block, a pair of scrolls and a plurality of air chambers, wherein the gliding block being coupled with the pair of scrolls for defining a plurality of air chambers on the scrolls, the pressure variation in the air chambers is then utilized for causing the motion of the gliding block, enabling the compressor to cause the gliding block by means of the pressure variation to motion upwardly as the compressor is actuated, and preventing the fluid in the high-pressure chamber from leaking towards the low-pressure chamber, thus allowing the compressors to quickly build up the pressure; the gliding block is caused by the pressure variation to motion downwardly at times when the compression ratio is excessively high, so as to relieve part of the load, thus improving the performance and reliability of the compressors.Type: GrantFiled: December 30, 2002Date of Patent: July 5, 2005Assignee: Industrial Technology Research InstituteInventors: Kun-I Liang, Yu-Choung Chang, Ching-Feng Lai, Ann- Huang
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Patent number: 6913447Abstract: A metering pump includes an actuating mechanism, and a plurality of piston cylinders coupled to the actuating mechanism. A first of the cylinders has a working volume that differs from a second of the cylinders. The actuating member is centrally located and the cylinders are arranged radially about the actuating mechanism. The working volume of the cylinders can be varied by adjusting the spacing of the cylinders from the actuating mechanism, thus varying the stroke of pistons housed within the cylinders, and/or by providing the cylinders with different inner diameters. A method of metering fluids includes independently adjusting stroke of a plurality of pistons to adjust the volume of metered fluid, and selecting different cylinder diameters to adjust the volume of metered fluid.Type: GrantFiled: January 22, 2002Date of Patent: July 5, 2005Assignee: R. Sanderson Management, Inc.Inventors: John Fox, Robert A. Sanderson
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Patent number: 6913450Abstract: A suction valve coupling structure for a reciprocating compressor is disclosed in which a piston being linearly moved in a cylinder upon receipt of driving force from an electric mechanism unit, according to which gas flows through a gas flow passage formed therein, is coupled by welding to a valve for opening and closing the gas flow passage, thereby strengthening the coupling state of the suction valve. Since the coupling structure is simplified, a dead volume is reduced and a stroke volume is increased, improving compression efficiency. A stroke control of the piston is facilitated to enable a precise control of movement of the piston. In addition, a reliability of the coupling of the suction valve can be improved.Type: GrantFiled: June 26, 2001Date of Patent: July 5, 2005Assignee: LG Electronics, Inc.Inventors: Seong-Joon Hong, Bon-Cheol Ku, Hyeong-Suk Kim, Hyung-Pyo Yoon
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Patent number: 6908290Abstract: A compressor for an automotive air conditioning system includes a cylinder head that comprises a mixing chamber, suction chamber and discharge chamber. The cylinder head comprises a first annular wall defining a mixing chamber and a second annular wall disposed about the first annular wall and spaced apart therefrom to define the suction chamber that communicates with the suction ports to the cylinder chambers. The discharge chamber is disposed about the second annular wall and communicates with the discharge ports. Refrigerant flows through the mixing chamber in a swirling or other turbulent pattern and into suction chamber through circumferentially spaced openings. By providing the mixing chamber and isolating the mixing chamber from the suction chamber, pressure pulsation resulting from opening of the suction ports to admit refrigerant is reduced.Type: GrantFiled: May 1, 2003Date of Patent: June 21, 2005Assignee: Visteon Global Technologies, Inc.Inventors: Srinivas S. Pitla, Vipen Khetarpal