Patents Examined by Philip E Stimpert
  • Patent number: 11035352
    Abstract: Systems and methods for enhancing performance in a reciprocating compressor are described. The compressor includes a cylinder, a crank shaft housing, a crank shaft, a motor, a motor housing and rod assembly. The rod assembly includes a coupling rod portion, a head portion, a cup seal, a cap and one or more valves. The rod assembly is configured to reciprocate within the cylinder so as to compress fluid within a space formed by the cylinder. The rod assembly is driven by the crank shaft. The one or more valves are configured to control air to the compressor. The one or more valves are removably coupled to the head portion, such that the one or more valves remain coupled to the head portion when the cap is detached from the coupling rod assembly.
    Type: Grant
    Filed: May 3, 2016
    Date of Patent: June 15, 2021
    Assignee: Koninklijke Philips N.V.
    Inventor: Varaprasad Ventrapragada
  • Patent number: 11035209
    Abstract: An apparatus and method for controlling a downhole pumping system is disclosed. The apparatus is capable of detecting motor operating conditions and pump operating conditions thereby and includes control systems for utilizing the motor operating conditions to control the operation of the downhole pumping system.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: June 15, 2021
    Inventors: Ramez Guindi, Georgios Orfanoudakis, Michael Yuratich
  • Patent number: 11028849
    Abstract: A rotation shaft of a scroll compressor that includes an oil flow path formed therein, an upper frame support portion which is inserted into an upper frame, a boss insertion portion which is recessed from an upper surface of the upper frame support portion for insertion of the boss portion, and an oil residual groove which is recessed at a predetermined depth from a bottom portion of the boss insertion portion.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: June 8, 2021
    Inventor: Munyoung Lee
  • Patent number: 11024409
    Abstract: A peristaltic pump having at least first, second, and third stages is provided. The peristaltic pump includes a plunger, inlet and outlet valves, a spring, and an actuator. The plunger actuates toward and away from a tube, the inlet valve is upstream of the plunger, the outlet valve is downstream of the plunger, the spring biases the plunger toward the tube, and the actuator mechanically engages and disengages from the plunger. In the first stage, the inlet valve is opened and the plunger is actuated from the tube, in the second stage, the inlet valve is closed, the plunger is actuated toward the tube, and the actuator is mechanically disengaged from the plunger, and in the third stage, the outlet valve is opened. In the third stage or in a fourth stage, the actuator actuates the plunger toward the tube to discharge fluid downstream past the outlet valve.
    Type: Grant
    Filed: February 8, 2019
    Date of Patent: June 1, 2021
    Assignee: DEKA Products Limited Partnership
    Inventors: Dean Kamen, John M. Kerwin, Colin H. Murphy, Christopher C. Langenfeld, Michael J. Slate, Michael S. Place, Larry B. Gray
  • Patent number: 11009021
    Abstract: A pump cartridge for mounting on a drive rotor includes a roller assembly having first and second hubs maintained in a spaced apart relationship and defining an axis, and a plurality of planetary rollers arranged in a circumferentially spaced orientation about the axis, the rollers mounted to the hubs displacement radially outward. One or more compressible tubing lines are interposed between the rollers and an interior wall of the pump cartridge housing. The housing and the first and second hubs collectively define a passageway through which a spreader on the drive rotor extends and may be rotated relative to the roller assembly to displace the rollers radially outward to thereby compress the tubing lines against the interior wall. A coupling feature on the first hub engages a roller driving feature of the rotor, so that rotation of the rotor causes rotation of the roller assembly about the axis.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: May 18, 2021
    Assignee: Hologic, Inc.
    Inventors: Danny Macari, Mathew John Whitney
  • Patent number: 10982631
    Abstract: A pulsation damper includes: a case in which a fuel chamber is defined; and a damper unit arranged in the fuel chamber to attenuate pressure pulsation of fuel. The damper unit has a diaphragm that is elastically deformed by receiving pressure of fuel, and a plate having a rigidity higher than that of the diaphragm. A gas chamber is defined between the diaphragm and the plate joined with each other.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: April 20, 2021
    Inventors: Daisuke Kashiwagi, Hiroyuki Shimai
  • Patent number: 10975872
    Abstract: A condensate recovery system is adapted for use with an existing drain. A condensate collection vessel, which may be funnel-shaped, is inserted into the existing drain includes an upper opening to receive condensate and an outer wall. At least a portion of the outer wall is spaced apart from the inner wall of the drain such that if the collection vessel overflows, the excess liquid flows into the drain. A float switch is operative to detect when the vessel has been filled with condensate, and a pump is operative to drain the vessel in response to the float switch detecting that the vessel has been filled with condensate. A time delay relay (TDR) may be activated for a predetermined period of time before shutting off the pump. The output of the pump may be used to replenish an evaporative cooling tower or other purposes.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: April 13, 2021
    Inventor: Stephen Christiansen
  • Patent number: 10975854
    Abstract: A method of dispensing a therapeutic fluid from a line includes providing an inlet line connectable to an upstream fluid source. The inlet line is in downstream fluid communication with a pumping chamber. The pumping chamber has a pump outlet. The method also includes actuating a force application assembly so as to restrict retrograde flow of fluid through the inlet while pressurizing the pumping chamber to urge flow through the pump outlet. A corresponding system employs the method.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: April 13, 2021
    Inventors: Dean Kamen, Larry Brian Gray, Eric Yeaton
  • Patent number: 10975858
    Abstract: A pump arrangement, in particular in a coating installation for the coating of components, such as a painting installation for the painting of motor vehicle body components, is provided. The pump arrangement includes a plurality of adjustable pumps for delivering a coating agent, e.g. for delivering a sealing agent for the sealing of weld seams on a motor vehicle body component. The pumps are connected in parallel such that the pumps extract the coating agent for delivery from a common inlet line and deliver said coating agent into a common outlet line. The arrangement further includes a control device for the open-loop or closed-loop control of one fluid variable at the outlet of the individual pumps, respectively, wherein the control device actuates the individual pumps individually, and/or a monitoring unit, which switches the pumps on and off non-simultaneously.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: April 13, 2021
    Assignee: Dürr Systems AG
    Inventors: Alexander Rüger, Marcus Duschek
  • Patent number: 10971982
    Abstract: A moving core type reciprocating motor is provided that may include a stator on which a coil may be wound and having an air gap; a magnet fixed to the stator; and a mover that includes a moving core disposed to face the magnet in the air gap and reciprocates with respect to the stator. The magnet may have a first pole and a second pole that are different poles arranged in a reciprocation direction of the mover, and a length of the first pole may be larger than a length of the second pole.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: April 6, 2021
    Inventors: Sangsub Jeong, Jaebeum Kim, Susok Lee
  • Patent number: 10961998
    Abstract: A control arrangement controls a position of a swashplate in an axial piston pump between a no-stroke position and a maximum stroke position. The control arrangement includes a servo spool mounted for limited sliding movement in a compensator piston cylinder. A solenoid coil is configured to provide a coil force to move the servo spool. A compensator piston is mounted in the compensator piston cylinder in response to movement of the servo spool. A spring between the servo spool and the compensator piston provides a spring force in response to the coil force applied to the servo spool. The control arrangement defines a feedback system configured to maintain a balancing relationship between the spring and coil forces to enable infinite control of the swashplate position.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: March 30, 2021
    Assignee: Hartmann Controls, Inc.
    Inventor: Donald G. Bethke
  • Patent number: 10954934
    Abstract: The pumping installation (16) comprises a pneumatic pump (22) for pumping a fluid (12) and a system (24) for supplying the pneumatic pump (22) with compressed gas. The supply system (24) comprises a source (34) of compressed gas and a fluidic connection (36) that fluidly connects the source (34) to the pneumatic pump (22). The pumping installation (16) also comprises a system (38) for controlling the supply of the compressed gas to the pneumatic pump (22), wherein the control system (38) comprises a valve (40) mounted on the fluidic connection (36) and switchable between a blocking state, in which the valve (40) prevents the flow of compressed gas between the source (34) and the pneumatic pump (22), and a passing state, in which the valve (40) allows the circulation of compressed gas between the source (34) and the pneumatic pump (22).
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: March 23, 2021
    Inventor: Boussif Khaldi
  • Patent number: 10947978
    Abstract: A compressor includes a compression mechanism that compresses low-pressure refrigerant in a compression chamber into high-pressure refrigerant, and an injection pipe arranged to supply intermediate-pressure refrigerant to the compression chamber. A valve assembly is disposable between the compression chamber and the injection pipe. The valve assembly includes an opening forming member that forms an opening, a valve body and a spring member. The valve body moves in accordance with differences between pressure of the refrigerant supplied from the injection pipe and pressure of the refrigerant in the middle of compression in the compression chamber. The valve body blocks the opening when the valve body has moved from a compression chamber side to an injection pipe side. The spring member is disposed on the injection pipe side of the opening. The spring member applies force in a direction of the injection pipe to the valve body.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: March 16, 2021
    Assignee: Daikin Industries, Ltd.
    Inventors: Chihiro Endou, Masanori Masuda, Yukihiro Inada
  • Patent number: 10947981
    Abstract: A variable speed pumping system and an associated method for moving water of an aquatic application. The variable speed pumping system includes a water pump for moving water in connection with performance of an operation upon the water. A variable speed motor is operatively connected to drive the pump. A sensor senses a parameter of the operation performed upon the water. A controller controls speed of the motor in response to the sensed parameter of operation.
    Type: Grant
    Filed: August 26, 2010
    Date of Patent: March 16, 2021
    Assignee: Pentair Water Pool and Spa, Inc.
    Inventor: Robert Stiles
  • Patent number: 10927845
    Abstract: A seal assembly for a gas turbine engine employs a first seal forming an oil chamber around a bearing. The first seal is configured to maintain the oil chamber at a first pressure. A second seal forms a ventilating cavity around the oil chamber. The second seal is configured to maintain the ventilating cavity at a second pressure, the second pressure being less than the first pressure and less than an ambient pressure of a primary flow path in the engine. A pressure reducing device is coupled to the ventilating cavity. The pressure reducing device is configured to maintain the second pressure.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: February 23, 2021
    Assignee: The Boeing Company
    Inventors: Chao-Hsin Lin, Raymond H. Horstman, George Bates, III
  • Patent number: 10920794
    Abstract: An aspirator may include an aspirator body comprising an outer wall and an inner wall, the inner wall defining a body channel. The aspirator may include an aspirator body including an outer wall and an inner wall, the inner wall defining a body channel. The aspirator body may include a plenum disposed between the outer wall and the inner wall. The aspirator body may include a plurality of apertures disposed between the outer wall and the inner wall and defined by a side wall and the plenum. The aspirator may include an aspirator barrel comprising a barrel outer wall and a barrel inner wall, the barrel inner wall defining an air channel. The air channel may be in fluid communication with the plenum.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: February 16, 2021
    Assignee: Goodrich Corporation
    Inventors: Skandan Berikai Kuppan, Satya Swaroop Panda
  • Patent number: 10900472
    Abstract: A hydraulic pressure compensating pump assembly having a fluid flow regulation mechanism is provided. The fluid flow regulation mechanism is set to an initial stroked position that can be adjusted to accommodate various applications. The fluid flow regulation mechanism includes a biasing means that allows the pump to de-stroke in response to a pressure demand increase and to return to the initial pressure set point when pressure demand subsides sufficiently. Different spring types and spring rates can be specified to achieve a desired response to pressure demand fluctuations within a particular hydraulic circuit.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: January 26, 2021
    Assignee: Hydro-Gear Limited Partnership
    Inventor: Nathan W. Bonny
  • Patent number: 10883480
    Abstract: A control valve includes: a first valve to control a flow rate of refrigerant flowing from a discharge chamber to a control chamber of a compressor; a second valve to control a flow rate of the refrigerant flowing from the control chamber to a suction chamber; a solenoid to generate a drive force in a first valve closing direction and a second valve opening direction; a biasing member to generate a biasing force in an first valve opening direction and a second valve closing direction; and a pressure sensing part to sense a pressure in the suction chamber or the control chamber, and generate a counterforce against the drive force.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: January 5, 2021
    Assignee: TGK CO., LTD.
    Inventors: Kazuhiro Irie, Masaaki Tonegawa, Hiroshi Hamada
  • Patent number: 10837439
    Abstract: A compact, modular dosing pump system that is capable of microdose and macrodose volume flow rates, reduces or eliminates the need for additional flow control components such as temperature and pressure sensors, and utilizes a wider operational flow range than existing systems while maintaining the level of accuracy and precision exhibited by conventional dosing pump systems is provided. The dosing pump utilizes a a control system to deliver a range of fluid volumes. The control system monitors the motor emf voltage, calculates the flow rate, and makes adjustments to the pump motor voltage to precisely maintain the desired flowrate.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: November 17, 2020
    Inventor: Fernando A. Ubidia
  • Patent number: 10830231
    Abstract: Positive drive valve actuating mechanisms useable to operate a valve of a reciprocating compressor for oil and gas industry and related methods are provided. The valve actuating mechanism includes a driver configured to perform a rotating motion and a follower connected to a mobile part of the valve and to the driver. The follower is configured to transform the rotating motion of the driver into a reciprocating motion to open the valve and to close the valve, respectively.
    Type: Grant
    Filed: May 1, 2013
    Date of Patent: November 10, 2020
    Assignee: Nuovo Pignone SrL
    Inventors: Riccardo Bagagli, Leonardo Tognarelli