Including Means For Selectively Varying Motor Speed Or Rotary Motor Direction Patents (Class 417/326)
  • Patent number: 11415179
    Abstract: A tie rod boot includes a minimally thick accordion shaped bellows section. One terminal end of the boot is secured to a steering mechanism and the other is secured to a tie rod. Protuberances are provided and are strategically located on the bellows walls for resisting impacts from rocks and other debris and minimizing holes through the tie rod. When the bellows is retracted and pairs of opposing bellows walls collapse towards each other, the protuberances of adjacent opposing walls nest with each other and contact the opposing wall. The protuberances can be step shaped rings or a ring of discrete protuberances which are step shaped or both. The step shaped protuberances are defined by a riser surface extending along a plane which is substantially perpendicular to the longitudinal axis of the boot and a tread annular surface which is substantially parallel with the longitudinal axis.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: August 16, 2022
    Assignee: BRC Rubber and Plastics, Inc.
    Inventors: Gary L Wellman, Gregory F Velpel, Robert K Wagner
  • Patent number: 11280328
    Abstract: A linear compressor includes a shell having a first opening and a second opening defined at opposite ends of the shell, a compressor body including a cylinder and a piston accommodated in the shell, a support part that protrudes from an end portion of the compressor body toward the second opening, a supporting damper that extends from the support part toward an inner surface of the shell. The supporting damper includes a first portion that is coupled to the support part and that defines a single contact region between the support part and the supporting damper, and at least two second portions that extend from the first portion to the inner surface of the shell and that define at least two contact regions that are spaced apart from each other along the inner surface of the shell.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: March 22, 2022
    Assignee: LG Electronics Inc.
    Inventors: Hyunsoo Kim, Sangeun Bae, Yunhyeok Yu
  • Patent number: 11009018
    Abstract: A pump (2) comprising a stator (4) and a rotor (6) axially and rotatably movable relative to the stator, the stator comprising a rotor shaft receiving cavity (18), an inlet (14) and an outlet (16) fluidly connected to the rotor shaft receiving cavity (18), the rotor comprising a shaft (24) received in the rotor shaft receiving cavity (18). The rotor shaft (24) comprises a cavity (39) receiving a piston portion (12) of the stator therein to form a piston chamber (42), a seal (44) mounted between the piston portion (12) and inner sidewall of the cavity (39) to sealingly close an end of the piston chamber (42).
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: May 18, 2021
    Assignee: SENSILE MEDICAL AG
    Inventors: Thomas Wyss, Alexandre Perrier, Christian Huber, Matthias Muller
  • Patent number: 10607508
    Abstract: A modular surgical training system for training in surgical interventions with real surgical instruments includes a reusable, energy supplying base module, and a regenerable training module which reproduces or has anatomical structures and can hold at least one consumable medium (for example, bodily fluids). The training module and the base module are detachably connected to one another via a combination interface, and pneumatic and/or mechanical and/or electric energy can be transmitted from the base module to the training module and/or electric signals can be transmitted between base module and training module via the combination interface. The base module and training module include conveying elements detachably connected via the combination interface, and at least one consumable medium can be conveyed into the anatomical structures by the conveying elements.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: March 31, 2020
    Assignee: FORSCHUNGS- UND TRANSFERZENTRUM LEIPZIG E.V. AN DER HOCHSCHULE FÜR TECHNIK, WIRTSCHAFT UND KULTUR LEIPZIG
    Inventors: Ben Andrack, Matthias Mueller, Jochen Handwerk, Ingo Lorber, Christian Koehler, Werner Korb, Luis Enrique Bernal Vera, Tobias Pilic
  • Patent number: 10463791
    Abstract: At least one hand-held injection device for the metered injection of a liquid drug into a person's tissue is disclosed. The exemplary injection device comprises an elongated drug reservoir having a longitudinal reservoir axis (A), an elongated dosing unit having a dosing unit inlet, a dosing unit outlet, and a metering cavity, the dosing unit having a longitudinal dosing unit axis (A?), the elongated drug reservoir being fluidically coupled to the dosing unit inlet. The dosing unit and the drug reservoir are arranged such that the longitudinal dosing unit axis (A?) is in parallel alignment with the reservoir axis (A). The dosing unit structured to allow the flow of the liquid drug from the drug reservoir into the metering cavity via the dosing unit inlet, thus charging the metering cavity, and to subsequently discharge the metering cavity by dosing drug out of the metering cavity into the dosing unit outlet.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: November 5, 2019
    Inventors: Oliver Shergold, Simon Scheurer
  • Patent number: 10159789
    Abstract: An infusion pump includes: a housing, a pump actuator supported by the housing, electronics configured to control the pump actuator, a pain controlled analgesic (“PCA”) input device, a cord having a remote end connected to the PCA input device and a local end connected to the housing, a remote integrated circuit; and a local integrated circuit in communication with the electronics and the remote integrated circuit so as to provide operational information concerning the PCA input device to the electronics.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: December 25, 2018
    Assignees: Baxter International Inc., Baxter Healthcare SA
    Inventor: Mark Randal Simmons
  • Patent number: 9951780
    Abstract: According to an embodiment of the invention, a pump motor controller for determining the speeds and run times of a pump motor for use in a pool is provided. The controller is adapted to receive data in the form of at least one of pool parameters, pump parameter and user preferences. The controller is further adapted to determine the speeds and run times of a pump motor for use in a pool based at least in part on data in the form of one of pool parameters, pump parameter and user preferences.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: April 24, 2018
    Assignee: Regal Beloit America, Inc.
    Inventors: Marc Christopher McKinzie, Mitchell T. Kiser, Stephen Douglas O'Brien
  • Patent number: 9816525
    Abstract: A fan assembly comprises a fan and a movable fan support. The fan has a motor and a fan blade drivable by the motor to move air in an airflow direction through an opening. The movable fan support is configured to movably support at least the fan. The fan support is mountable adjacent the opening on a first side and comprises extension members extendable from an operating position on the first side of the opening to an access position on a second side of the opening opposite the first side. In the access position, the extension members extend through the opening from the first side to the second side to support the motor and fan blade on the second of the opening for access.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: November 14, 2017
    Assignee: Amazon Technologies, Inc.
    Inventors: Timothy Logan Sadler, Matthew Thomas Phillips
  • Patent number: 9545475
    Abstract: A patient care system includes a control unit capable of coupling with multiple modular medical devices. A modular medical device can be coupled with the control unit, wherein the behavior of the modular medical device automatically adjusts based on the status of being coupled or un-coupled with the control unit.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: January 17, 2017
    Assignee: CareFusion 303, Inc.
    Inventors: Gregory Borges, Donald Halbert
  • Patent number: 9360017
    Abstract: A pump assembly includes a permanent magnet motor having a stator with coil windings, a rotor assembly having a shaft and an impeller attached to the shaft, with the shaft being driven by the stator and the impeller driving fluid through the pump assembly, and a control module having a controller and a user interface. The controller measures characteristics of the stator, the controller determines at least one of the flow rate and the pressure of the fluid moved through the pump assembly based on the characteristics measured, and the user interface is configured to display an output representative of the flow rate. A method of operating a pump includes the steps of measuring at least one operating characteristic of the pump utilizing the controller integrated with the pump, determining a flow characteristic of the pump based on the at least one measured operating characteristic, and displaying the determined flow characteristic on a user interface integrated with the pump.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: June 7, 2016
    Assignee: GRUNDFOS PUMPS CORPORATION
    Inventor: Kim Hoerdum Hansen
  • Patent number: 8784072
    Abstract: An apparatus is provided for compressing a loose solid feedstock. The apparatus includes a two stage compressor. The first compression stage is a screw compressor. The second compressor stage is a reciprocating compressor. The reciprocating compressor operates co-axially with, and receives its feed from, the screw compressor. A choke cone maintains pressure in the outfeed from the compressor stages. The reciprocating compressor, the screw compressor, and the choke cone are all adjustable in real time to control the compression of the feedstock according to a pre-programmed schedule that need not have equal compression and retraction strokes. The operation of the screw compressor may be advanced or eased off depending on the motion of the reciprocating compressor. The operation of the choke cone may be actively controlled to obtain a coordination with the compressor stages.
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: July 22, 2014
    Assignee: Mascoma Canada Inc.
    Inventor: Murray J. Burke
  • Publication number: 20140186197
    Abstract: The fan assembly having multiple centrifugal fans in mechanical connection with a planetary gear system is a novel improvement to the field of fans, and which includes at least two centrifugal fans that are in mechanical connection with a single drive source. A planetary gear system connects the centrifugal fans to the single drive source such that all centrifugal fans work in concert. The assembly includes a housing that is constructed of a first portion positioned atop and able to rotate with respect to a second portion. The ability of the first portion to rotate with respect to the second portion enables the first portion where the centrifugal fans to rotate 360 degrees. The first portion includes partitions, which isolate each centrifugal fans from one another.
    Type: Application
    Filed: January 2, 2013
    Publication date: July 3, 2014
    Inventor: ELIJAH ANIM OWUSU
  • Patent number: 8740582
    Abstract: For refrigeration units, maintenance machines are required that can receive and compress the refrigerant from the refrigeration unit. Furthermore, a vacuum pump is required, which is connected to the emptied lines and pumps out humidity and air. The maintenance machine according to the invention includes a motor that drives a compressor via a freewheel in one rotational direction. The same motor drives a vacuum pump via a second freewheel in the other rotational direction. The maintenance machine, which can perform two different functions, includes only one single motor. The machine is lightweight, so that it can be carried by the maintenance personnel. Furthermore, it is small and can be produced in a cost-effective manner.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: June 3, 2014
    Assignee: Inficon GmbH
    Inventor: Gerd H. Rabe
  • Publication number: 20140050599
    Abstract: The air pump is installed on the frame of a bicycle which utilizes the sprocket of the bicycle as the power source. The air pump contains a cylinder member, a transmission member, and a positioning member. The positioning and transmission members are connected to the cylinder member. The positioning member allows the adjustment and positioning of the cylinder member along the bicycle frame so that the cylinder member can be engaged by a front sprocket of the bicycle. The transmission member contains a shaft and a gear. The shaft has one end connected to the cylinder member and another end connected to the gear. When a rider rotates the front sprocket, the rotational power is delivered to the gear and then to the shaft of the transmission member, which in turn drives the cylinder member to pump air for inflation.
    Type: Application
    Filed: August 15, 2012
    Publication date: February 20, 2014
    Inventor: WEN-CHING WU
  • Patent number: 8465262
    Abstract: Embodiments of the invention provide a pumping system for at least one aquatic application controlled by a user. The pumping system includes a pump, a variable speed motor, a memory, and a controller. The pumping system includes a user interface with a first speed button, a second speed button, an increase button, and a decrease button. The buttons provide an actuate and release operation, a first touch and hold operation, and a second touch and hold operation. The controller operates the variable speed motor at a substantially constant speed based on a current speed value selected by the user using the buttons.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: June 18, 2013
    Assignee: Pentair Water Pool and Spa, Inc.
    Inventors: Robert W. Stiles, Jr., Lars Hoffmann Berthelsen, Ronald B. Robol, Christopher R. Yahnker, Daniel J. Hruby, Kevin Murphy, Einar Kjartan Runarsson, Arne Fink Hansen, Florin Lungeanu, Peter Westermann-Rasmussen
  • Patent number: 8348625
    Abstract: A fan control system includes first and second adjacent fans, first and second motors configured to rotate the first and second fans, and a control unit configured to control rotational speeds of the first and second motors in order to control rotational speeds of the first and second fans. The first and second motors are energized such that the rotational speeds of the first and second fans reach target rotational speeds prior to increasing the rotational speeds of the first and second fans to required rotational speeds. The target rotational speeds are lower than the required rotational speeds. The first and second motors are energized such that the rotational speeds of the first and second fans reach the required rotational speeds after the rotational speeds of the first and second fans reach the target rotational speeds.
    Type: Grant
    Filed: April 22, 2008
    Date of Patent: January 8, 2013
    Assignee: Daikin Industries, Ltd.
    Inventors: Toshiaki Sato, Hiroshi Doumae, Sumio Kagimura
  • Patent number: 8333560
    Abstract: The anti-Sudden infant death syndrome baby fan is a portable fan that can attach to a baby crib in order to provide air movement across an infant in order to prevent the likelihood of sudden infant death syndrome. The portable fan comprises a housing, foam blades, rubber mat, knob, ON/OFF switch, and battery compartment. The inclusion of foam blades is a safety design in that foam blades will not inflict any substantive injury to anyone who touches said blades while in motion, i.e. the infant. The portable fan can also be integrated into the design of a crib mobile in order to circulate air from above the crib.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: December 18, 2012
    Inventor: James Ward
  • Publication number: 20120315161
    Abstract: A portable mechanical fan device comprises a spring loaded hand grip, one or more hand grip springs, a saw-tooth drive plate, upper and lower drive gears, a fan blade gear, a fan blade shaft and fan blades. The saw-tooth drive plate is attached to the top of the spring loaded hand grip. Squeezing the spring loaded hand grip by a hand drives the saw-tooth drive plate against the lower drive gear which in turn drives the upper drive gear forward to be meshed against the fan blade gear and causes the upper drive gear and the fan blade gear to rotate. Releasing the spring loaded hand grip allows the upper drive gear and the fan blade gear to be unmeshed and continue rotating. The fan blade gear is attached to the fan blade shaft to allow for continuous rotation of the fan blades through the squeezing and releasing of the spring loaded hand grip to create a cooling breeze.
    Type: Application
    Filed: August 22, 2012
    Publication date: December 13, 2012
    Inventor: Lawrence Edward THOMASSON
  • Patent number: 8312863
    Abstract: A system for providing fuel to an engine fuel delivery system and to an exhaust aftertreatment system associated with an engine. The system includes a fuel source, a pump being operable in a first state to pump fuel from the fuel source to the engine fuel delivery system, and the pump being operable in a second state to pump fuel from the fuel source to the exhaust aftertreatment system, wherein the first state corresponds to a first rotational direction of the pump and the second state corresponds to a second rotational direction of the pump.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: November 20, 2012
    Assignee: Caterpillar Inc.
    Inventors: Daniel R. Ibrahim, Ye Tian
  • Patent number: 8234875
    Abstract: A fuel system for a turbine engine is provided. The fuel system includes a positive displacement pump driven by an electric motor. The pump is rotated in a first direction to deliver fuel to the turbine engine, and a second direction for evacuating fuel from the turbine engine. A shut-off check valve is open in a first direction in response to a first differential pressure created by the pump in the first direction. The shut-off check valve is biased to a closed position when the pump is rotating in the second direction. An ecology check valve is biased to a closed position in the first direction and open in the second direction in response to a second differential pressure created by the pump. The check valves open and close automatically in response to the pressures generated by the positive displacement pump in each of the first and second rotational directions. In this manner, simple, reliable valves are utilized to regulate the flow of fuel in the fuel system.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: August 7, 2012
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Charles H. Falke, Leo J. Veilleux, Douglas A. Parsons
  • Patent number: 8152485
    Abstract: A DC brushless motor pump comprises a stator unit consisting of a plurality of silicon steel laminations and a coil, a rotor, an excitation circuit connected to the stator unit, a signal controller supplying power to the excitation circuit, and a magnetic induction module connected to the signal controller to control the pump running. Further, in the pump, a cylinder is provided between the stator unit and the rotor. An orientation component that protrudes in a radial direction is provided on an outer circumferential wall of the cylinder so that the magnetic induction module may be mounted onto the orientation component. Thus, the orientation component is used to fix the magnetic induction module for increasing the accuracy of detection.
    Type: Grant
    Filed: September 15, 2008
    Date of Patent: April 10, 2012
    Inventor: Hsia-Yuan Hsu
  • Patent number: 8057199
    Abstract: A pump assembly constructed to allow unloaded starting of the pump. The assembly includes a pump body, a permanent magnet rotor, a rotor shaft, a pump cover, a shaft sleeve and an impeller. The impeller includes a holding chamber for holding the shaft sleeve which is arranged proximate a center of the impeller. A stopping rib extends inwardly from an internal wall of the holding chamber of the impeller. The shaft sleeve includes a tubular body with a starting rib extending laterally from the body. During operation of the pump, the starting rib interferes with the stopping rib. A number of shock absorbing pads are disposed between the starting rib and the stopping rib and maintained thereat by a notch and ridge association that extends along each rib and pad. The pump includes a space that allows rotation of the starting rib relative to the stopping rib which provides unloaded starting of the pump.
    Type: Grant
    Filed: May 29, 2006
    Date of Patent: November 15, 2011
    Assignee: Jiangmen Idear Hanyu Electrical
    Inventors: Mingxue Li, Huashan Shi
  • Patent number: 8043070
    Abstract: A pumping system for moving water of a swimming pool includes a water pump, an infinitely variable speed motor, and an arrangement for operating the motor. In one example, the pumping system includes a memory configured to store a plurality of retained speed values, an arrangement for providing a plurality of retained speed values to the memory, and an arrangement for reading a selected one of the plurality of retained speed values from the memory. In addition or alternatively, the pumping system includes a storage medium for digitally storing a plurality of pre-established motor speed values and an arrangement for receiving input from a user to select one of the pre-established motor speeds. In addition or alternatively, the pumping system further includes an arrangement for restarting operation of the motor at a previously selected speed value when power supplied to the motor is interrupted during operation of the motor. A method for controlling the pumping system is also provided.
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: October 25, 2011
    Assignees: Pentair Water Pool and Spa, Inc., Danfoss Low Power Drives, a Division of Danfoss
    Inventors: Robert W. Stiles, Jr., Lars Hoffmann Berthelsen, Ronald B. Robol, Christopher R. Yahnker, Daniel J. Hruby, Kevin Murphy, Einar Kjartan Runarsson, Arne Fink Hansen, Florin Lungeanu, Peter Westermann-Rasmussen
  • Publication number: 20110228471
    Abstract: One embodiment provides a system for controlling one or more pulse width modulated (PWM) fans. The system can include a control system configured to provide a voltage control signal corresponding to a DC output voltage for the one or more PWM fans. A variable DC voltage source is configured to supply the DC output voltage to the plurality of fans at one of at least two different DC voltages based on the voltage control signal. The DC output voltage from the variable DC voltage source is separate from a PWM control signal that is also supplied to the PWM fans.
    Type: Application
    Filed: March 16, 2010
    Publication date: September 22, 2011
    Inventors: DANIEL HUMPHREY, Mohamed Amin Bemat, Reynaldo P. Domingo, Reginald A. Whyte, JR.
  • Patent number: 7988432
    Abstract: 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 cylinder. A vane installed in the cylinder continuously contacts the roller. An upper and a lower bearing are respectively disposed on the top and bottom of the cylinder. A disc shaped valve rotates between two positions and has at least one suction port for selectively supplying refrigerant inside the compression chamber according to the rotational direction of the driving shaft and at least one discharge port communicates with the compression chamber for discharging the compressed refrigerant. The refrigerant is supplied through a communication hole to a port formed on the outer valve.
    Type: Grant
    Filed: April 26, 2004
    Date of Patent: August 2, 2011
    Assignee: LG Electronics Inc.
    Inventors: Ji Young Bae, Chul Gi Roh, Kyoung Jun Park, Chang Yong Jang, Jong Bong Kim
  • Patent number: 7980831
    Abstract: An oscillating type piston is connected to an output shaft of an electric motor through a crankshaft. The piston is provided with a lip ring that slidingly contacts a cylinder. The motor is rotated forward and reversely by using a control circuit. Thus, different regions of the piston are subjected to a load during forward rotation of the motor and during reverse rotation thereof. Accordingly, wear of the lip ring can be distributed to different regions thereof.
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: July 19, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Shingo Miyake, Yoshie Tsujimi, Takahisa Hirasawa
  • Publication number: 20110027105
    Abstract: A transmission oil pump for an automatic transmission of a motor vehicle. The speed of the oil pump can be shifted by a transmission (2), that is arranged between the drive motor of the motor vehicle and the transmission oil pump, to a fast-running mode or a slow-running mode so that the oil pump can be operated at two different speed levels.
    Type: Application
    Filed: July 15, 2010
    Publication date: February 3, 2011
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventors: Josef HAUPT, Christian POPP, Thilo SCHMIDT, Georg GIERER
  • Patent number: 7854602
    Abstract: 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 installed rotatably on an outer circumference of the eccentric portion so as to contact an inner circumference of the cylinder; a vane installed elastically in the cylinder to contact the roller continuously; a first bearing installed in the cylinder, for rotatably supporting the driving shaft; a second bearing installed in the cylinder, for rotatably supporting the driving shaft and guiding the fluid into the fluid chamber; discharge ports communicating with the fluid chamber; and a valve assembly having openings separated by a predetermined angle from each other, the valve assembly having a center which is eccentrically installed by a predetermined distance from a center of the cylinder.
    Type: Grant
    Filed: April 27, 2004
    Date of Patent: December 21, 2010
    Assignee: LG Electronics Inc.
    Inventors: Ji Young Bae, Chul Gi Roh, Kyoung Jun Park, Chang Yong Jang, Jong Bong Kim, Young Hwan Ko
  • Patent number: 7841837
    Abstract: The present invention discloses a cooling-fan rotation-speed control circuit, wherein a plurality of sets of input power sources respectively having different voltages is electrically and parallel coupled to a cooling fan; a switch is installed between at least one input power source and the cooling fan; the switch is turned on/off according to a rotation-speed parameter to determine whether the cooling fan is driven by a low-voltage driving power or a high-voltage driving power.
    Type: Grant
    Filed: August 17, 2006
    Date of Patent: November 30, 2010
    Assignee: Zippy Technology Corp.
    Inventor: Tsung-Chun Chen
  • Patent number: 7821215
    Abstract: Embodiments of the invention provide a method of detecting a fault condition in a motor of a pump. The method includes sensing a first current value and a speed of the motor, attempting a recovery operation if the first current value is greater than a current threshold and if the speed of the motor is less than a motor speed low threshold, and sensing a second current value during the recovery operation and shutting down a drive to the motor if the second current value is also greater than the current threshold. The method also includes performing the recovery operation for a time period if the second current value is less than the current threshold and attempting to operate the motor in a normal mode after the time period has elapsed.
    Type: Grant
    Filed: November 2, 2009
    Date of Patent: October 26, 2010
    Assignee: Sta-Rite Industries, LLC
    Inventor: Robert M. Koehl
  • Patent number: 7746063
    Abstract: A method and apparatus are provided for obtaining the rotational speed of a pump system or other suitable rotating equipment having a self-contained pump electrical equipment power supply. The method features, before being rectified, directing one phase of AC power through a zero crossing circuit that identifies an instant of time the AC voltage crosses from one polarity to the other polarity and triggers a square wave pulse for each instant time. In operation, the AC voltage is detected when it crosses from a negative polarity to a positive polarity, or vice versa. The method also includes steps for measuring the period of the square wave pulse and calculating the speed of the pump or other rotating equipment.
    Type: Grant
    Filed: March 16, 2006
    Date of Patent: June 29, 2010
    Assignee: ITT Manufacturing Enterprises, Inc.
    Inventors: Eugene P. Sabini, Jerome A. Lorenc, Kenneth L. Hauenstein
  • Publication number: 20100143161
    Abstract: A pair of dual chamber mixing pumps are combined which allow for a constant dispense rate profile using motor speed modulation. Each pump is divided into two chambers, the proximal chamber and the distal chamber. The chambers are defined in part by a piston having proximal and distal ends and recessed sections. The pump utilizes one common driving mechanism to axially rotate and laterally reciprocate the piston to provide continuous pumping of fluids with reduced pulsations. Each fluid enters through its own pump inlet and outlet. The pumps are operated 90° out of phase with respect to each other.
    Type: Application
    Filed: February 12, 2010
    Publication date: June 10, 2010
    Applicant: Fluid Management Operations, LLC.
    Inventors: Tim P. Hogan, James R. Cleveland, John Hsing, Jerry Visak, Stephen Burns
  • Publication number: 20100054964
    Abstract: A rotating speed adjustment circuit for a heat dissipation fan includes a first node, a second node, a reception end for receiving a first control signal, a first resistor coupled to a voltage source and the first node, a second resistor coupled to the first node and the second node, a third resistor coupled to the second node and a ground end, a capacitor coupled to the first node and the ground end, a transistor coupled to the reception end, the second node and the ground end, an oscillator for generating an oscillating signal, and a comparator for comparing a signal of the first node and the oscillating signal, so as to output a second control signal to control a rotating speed of the heat dissipation fan.
    Type: Application
    Filed: December 24, 2008
    Publication date: March 4, 2010
    Inventors: Tzu-Cheng Teng, Ching-Sheng Li, Ming-Jung Tsai, Shen-Min Lo
  • Patent number: 7641449
    Abstract: For a motor that drives a compressed air generator, three operating modes which includes a powerful mode for rotating a motor in a high speed range, a silent mode for rotating the motor in a low speed range, and an automatic mode for automatically changing the rotation speed of the motor from the low speed to the high speed in accordance with a setup condition are prepared. A user can designate a desired operating mode by using an operating mode selection switch.
    Type: Grant
    Filed: June 23, 2004
    Date of Patent: January 5, 2010
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Yoshio Iimura, Hiroaki Orikasa, Mitsuhiro Sunaoshi, Kazuhiro Segawa
  • Publication number: 20080310969
    Abstract: A dual chamber mixing pump design is disclosed which allows two different sources of fluid to be combined into one mixed product fluid. The pump is divided into two chambers, the proximal chamber and the distal chamber. The chambers are defined in part by a piston having proximal and distal ends and recessed sections. The pump utilizes one common driving mechanism to axially rotate and laterally reciprocate the piston to provide continuous pumping of fluids with reduced pulsations. Each fluid enters through its own pump inlet and outlet. For mixing applications, the outlets are joined together. The flow volume per stroke of each chamber is determined by the lateral stroke of the entire piston assembly and also by the annular areas of the proximal and distal ends of the piston. The flow volume per stroke may be altered by varying the piston and shaft diameters for each chamber. This allows mixing of two fluids in any ratio or proportion desired.
    Type: Application
    Filed: August 2, 2007
    Publication date: December 18, 2008
    Applicant: FLUID MANAGEMENT OPERATIONS LLC
    Inventor: Tim Patrick Hogan
  • Patent number: 7425805
    Abstract: A three-in-one control device for a ceiling fan includes a signal receiving module, which is able to receive segmented controlled signals, stepless controlled signals and wireless controlled signals respectively, for transmitting controlled signals to a micro computer control unit to process, analyze and code them. Then, the processed signals are transmitted to a driving unit to drive the blades of the ceiling fan to rotate. Therefore, when a control switch is replaced with another type, it is unnecessary to change the control device but just connect it to a corresponding control module, able to save manufacturing cost.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: September 16, 2008
    Inventor: Hsia-Yuan Hsu
  • Publication number: 20080101962
    Abstract: A vacuum pump includes at least two stages (2, 3), a motor (8) for driving pump-active elements of the two stages (2, 3), a transmission unit (7) for transmitting driving power from the motor (8) to the pump-active elements, a motor control (9) for controlling a rotational speed of the motor (8), and an evaluation unit (12) electrically connectable with pressure-sensitive signal sensor (10) located between the two stages for receiving a signal generated by the signal sensor and connected with the motor control (9) for transmitting an evaluated signal thereto, so that the motor control (9) can change a rotational speed of the motor (8) in accordance with the received evaluated signal.
    Type: Application
    Filed: October 24, 2007
    Publication date: May 1, 2008
    Inventors: Thomas Cromm, Stefan Kallenborn
  • Patent number: 7329103
    Abstract: A cooling fan with built-in adjustable speed structure of the invention is provided herein. The cooling fan of the invention fan has built-in fan speed controlling parts installed inside, in addition, has a fan speed controlling interface, such as a knob or a keystroke, positioned on the fan frame for a user to directly adjust fan speed as needed without additional wirings to be connected. The invention can be used at any environment where needs a cooling fan.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: February 12, 2008
    Assignee: Enermax Technology Corporation
    Inventor: Steven Su
  • Patent number: 7290990
    Abstract: In a method of operating a scroll or screw compressor at startup, the compressor is rotated in reverse for a brief period of time. The compressor is of a type that does not compress liquid when rotated in reverse. The purpose is to boil off the liquid refrigerant from the oil by heating and agitating the mixture of oil and refrigerant in the oil sump. This results in much more benign forward start as no refrigerant is drawn into the scroll compressor pump and the amount of oil pumped out of the compressor on start up is minimized. Also, the viscosity of oil is increased and lubrication of the bearings is improved. After a short period of time reverse rotation is stopped and the compressor can begin to be driven in the forward direction.
    Type: Grant
    Filed: May 22, 2003
    Date of Patent: November 6, 2007
    Assignee: Carrier Corporation
    Inventor: Alexander Lifson
  • Patent number: 7284968
    Abstract: 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 pump, a binary supply/discharge valve assembly, a selectable check valve assembly and a valve controller. The motor is mounted inside the housing. The valve assembly and the motor cooperate to pump air into or draw air out of an air mattress or inflatable sofa.
    Type: Grant
    Filed: September 28, 2004
    Date of Patent: October 23, 2007
    Assignee: Ho Lee Co., Ltd.
    Inventor: Lung-Po Tsai
  • Patent number: 7207781
    Abstract: A pressure exchange device is provided that utilizes a rotor assembly inside a housing to transfer the pressure of a fluid from one high pressure fluid to another low pressure fluid. The housing may comprise a pressurized fluid contained therein to provide a sealing force to reduce fluid leakage between the spinning rotors and the housing. The sealing force and wear characteristics may be controlled to reduce leakage and wear of the pressure exchange device. The rotor assembly may be driven in either direction and the high pressure ports may be switched with the low pressure ports if desired.
    Type: Grant
    Filed: August 20, 2004
    Date of Patent: April 24, 2007
    Inventor: Scott Shumway
  • Patent number: 7186100
    Abstract: A variable capacity rotary compressor allowing oil to be smoothly supplied to compressing elements, regardless of a rotating direction of a rotating shaft. The variable capacity rotary compressor includes a rotating shaft which is rotated in a forward direction or a reverse direction to vary a compression capacity of the compressor. A shaft bearing supports the rotating shaft. An oil guide groove is spirally formed on at least one of the shaft bearing and the rotating shaft to supply oil. An oil storing chamber is defined at an upper portion of the shaft bearing to communicate with the oil guide groove, and stores a predetermined amount of oil therein.
    Type: Grant
    Filed: March 30, 2004
    Date of Patent: March 6, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung Hea Cho, Chun Mo Sung
  • Patent number: 7152265
    Abstract: An inflatable product includes a pack having a first vent with a first valve, a second vent with a second valve, a third vent in communication with the ambient, a first chamber in communication with the first vent, a second chamber in communication with the second vent, and an air pump pumping air into and out of the pack through the third vent when activated in a first and second direction. A first switch structure is movable between first and second orientations. The first orientation opens the first valve and activates the air pump in the first direction to inflate the first chamber. The second orientation closes the first valve. A second switch structure is movable between third and fourth orientations. The third orientation opens the second valve and activates the air pump in the second direction to deflate the second chamber. The fourth orientation closes the second valve.
    Type: Grant
    Filed: October 30, 2003
    Date of Patent: December 26, 2006
    Assignee: Team Worldwide Corporation
    Inventor: Wang Cheng Chung
  • Patent number: 7146967
    Abstract: When a pressure of fuel supplied to an engine is higher than a target, the fuel is carried in a reverse direction by rotating a fuel pump in reverse, and in accordance therewith, the fuel pressure is made to fall with good responsiveness.
    Type: Grant
    Filed: April 15, 2005
    Date of Patent: December 12, 2006
    Assignee: Hitachi, Ltd.
    Inventor: Hajime Hosoya
  • Patent number: 7144224
    Abstract: A variable capacity rotary compressor is designed to prevent eccentric bushes from slipping during a compression operation, and thereby prevent noise from being generated and increase durability. The variable capacity rotary compressor includes a housing to define first and second compression chambers having different capacities therein. First and second eccentric cams are mounted to a rotating shaft to be placed in the first and second compression chambers, respectively. First and second eccentric bushes are rotatably fitted over the first and second eccentric cams, respectively. First and second rollers are rotatably fitted over the first and second eccentric bushes, respectively. First and second vanes partition the first and second compression chambers, respectively.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: December 5, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Gyu Woo Kim, Jun Young Lee, Dong Lyoul Shin, Seung Kap Lee, Cheol Woo Kim, Valery Krasnoslobodtsev
  • Patent number: 7114932
    Abstract: A pivoting vane rotary compressor includes a housing having a generally pear-shaped chamber. A rotor mounted within the chamber defines a main and constricted chamber regions. Reversible intake and exhaust ports alternately introduce air into and exhaust air from the chamber. The rotor carries pivotable vanes and a motor drives the rotor alternately in opposing first and second directions to open the vanes and define compartments that transmit the air through the chamber between the ports. Air introduced through one of the ports is compressed and discharged through the other port. A concentrator employs a pair of these compressors as well as associated filters and crossover valves.
    Type: Grant
    Filed: January 22, 2004
    Date of Patent: October 3, 2006
    Inventor: Stuart Bassine
  • Patent number: 7104764
    Abstract: A variable capacity rotary compressor is designed to prevent eccentric bushes from slipping during a compression operation, thus preventing noise from being generated and increasing durability. The compressor includes a housing to define two compression chambers having different capacities therein. A rotating shaft is rotated in the compression chambers. Two eccentric cams are mounted to the rotating shaft. Two eccentric bushes are rotatably fitted over the eccentric cams. Two rollers are rotatably fitted over the eccentric bushes. Two vanes are installed in the compression chambers to be reciprocated in a radial direction of the rotating shaft. A cylindrical connecting part integrally connects the eccentric bushes to each other, with a locking slot being provided around the connecting part.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: September 12, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: In Ju Lee, Jun Young Lee, Dong Lyoul Shin, Seung Kap Lee, Cheol Woo Kim, Valery Krasnoslobodtsev
  • Patent number: 7077632
    Abstract: A blower (1) has a housing (10) to which a blower pipe (2) may be removably connected. An internal combustion engine located within the housing (10) drives a blower wheel. The blower wheel, in turn, generates an air flow (11) within the blower pipe. To reduce the exhaust gases and the fuel consumption during idle operation of the combustion engine, a reduction device (12, 22), located in the blower pipe downstream of the blower wheel reduces the clear cross section of flow during idle operation of the engine.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: July 18, 2006
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Gerhard Osburg, Wolfgang Luithardt, Peter Schmidt
  • Patent number: 7033145
    Abstract: A centrifugal pump for a household appliance includes a synchronous alternating current electrical motor having a permanent magnet rotor and a bladed impeller coupled to an end of the rotor which extends into a cavity in the hub thereof. The rotor and the hub are provided with transverse coupling formations, respectively, which have angular extensions with angular play between the rotor and the impeller for promoting the starting of the motor. The rotor coupling formation includes a transverse appendage on a rigid drive body secured to the rotor, and a resilient damping formation molded onto the drive body and having two end portions for engaging the impeller coupling formation, and an intermediate portion which interconnects the end portions and extends at least partially through the drive body so that the damping formation as a whole is constrained axially and angularly on the drive body.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: April 25, 2006
    Assignee: Plaset, S.p.A.
    Inventor: Sabino Iacocca
  • Patent number: 6860724
    Abstract: A rotary compressor having a plurality of compression chambers and adapted to vary a compression capacity according to a direction of rotation of roller pistons within the compression chambers. A rotating shaft provided with a plurality of eccentric parts drives the roller pistons to compress refrigerant in the compression chambers by eccentric rotations of the eccentric parts. A reversible motor selectively rotates the rotating shaft in opposite directions, and a clutch engages the roller pistons such that the roller pistons perform a compressing action or an idle action according to a rotating direction of the rotating shaft, thus varying the compression capacity of the compressor according to a rotating direction of the rotating shaft. Thus, the compression capacity may be varied without using an inverter circuit.
    Type: Grant
    Filed: January 28, 2003
    Date of Patent: March 1, 2005
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-Hea Cho, Sung-Yeon Park, Chang-Ho Jung, Jong-Goo Kim