Patents Examined by Geoffrey S Lee
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Patent number: 11499555Abstract: A vane rotary compressor may include a main bearing and a sub bearing provided with a plurality of back pressure pockets each having a different pressure formed on a surface facing the cylinder, a rotational shaft radially supported by the main bearing and the sub bearing, a roller provided with a back pressure chamber that communicates with the plurality of back pressure pockets and having a plurality of vanes configured to divide a compression space into a plurality of compression chambers. At least one of the main bearing or the sub bearing is provided with an oil supply passage that communicates with a back pressure pocket having a relatively low pressure among the plurality of back pressure pockets. Accordingly, oil may be smoothly supplied to a back pressure pocket having a low pressure.Type: GrantFiled: January 6, 2020Date of Patent: November 15, 2022Assignee: LG ELECTRONICS INC.Inventors: Kiyoul Noh, Seokhwan Moon, Joonhong Park
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Patent number: 11493033Abstract: An air compressor system includes a motor operably connected to an air compressor, a separator tank fluidly connected to the air compressor by a supply line, a compressed air line coupled to the separator tank, a service valve connected to the compressed air line and positioned downstream of the separator tank, and a controller in operable communication with the motor, wherein in response to the controller detecting the motor operating at an idle speed, the controller reduces the motor speed to a low idle speed and reduces pressure in the separator tank, the low idle speed being slower than the idle speed.Type: GrantFiled: November 20, 2018Date of Patent: November 8, 2022Assignee: CLARK EQUIPMENT COMPANYInventors: Petr Jindra, Ctibor Balas, Jaromir Nusl
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Patent number: 11486372Abstract: The present invention relates to a rotary barrel pump where the pivot connection between barrel (6) and casing (15) is provided by the distinct guide and centering means.Type: GrantFiled: October 8, 2018Date of Patent: November 1, 2022Assignee: IFP ENERGIES NOUVELLESInventors: Jean Tricard, Julien Trost, Philippe Pagnier
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Patent number: 11480181Abstract: The invention relates to a vacuum system, comprising a vacuum pump, preferably turbomolecular pump, and at least one vacuum chamber, wherein the vacuum pump comprises: at least a first and a second inlet and a common outlet; at least a first and a second pumping stage, each pumping stage comprising at least one rotor element being arranged on a common rotor shaft, wherein the first inlet is connected to an upstream end of the first pumping stage and the second inlet is connected to an upstream end of the second pumping stage; a direction element for preventing a gas flow from a downstream end of the first pumping stage to the second inlet; a conduit having a conduit inlet and a conduit outlet, wherein the conduit inlet is connected to the downstream end of the first pumping stage and the conduit outlet is connected to a location downstream of the second pumping stage; wherein the first inlet and the second inlet of the pump are connected to the same vacuum chamber.Type: GrantFiled: July 7, 2020Date of Patent: October 25, 2022Assignees: PFEIFFER VACUUM GMBH, AGILENT TECHNOLOGIES, INC.Inventors: Tobias Stoll, Michael Schweighoefer, Jan Hoffmann, James L. Bertsch
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Patent number: 11460033Abstract: An inflation device relates to the technical field of inflation equipment. The inflation device includes an inflation shell and a control main board. The inflation shell is arranged in an inflatable product, and is provided with an air outlet cavity; the air outlet cavity is provided with an air outlet; an inflation upper cover and the inflation shell are detachably and fixedly assembled; the inflation upper cover is provided with an air inlet end part; the air inlet end part passes through the inflatable product and extends towards the outer side of the inflatable product; the air inlet end part is provided with an air inlet; the air inlet communicates the air outlet cavity with the outside of the inflatable product. The inflation device using the above technical solution has the advantages of simple and convenient assembling, good leakproofness, high yield, high production efficiency, ingenious design, and easy maintenance.Type: GrantFiled: October 12, 2021Date of Patent: October 4, 2022Inventor: Shuobin Chen
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Patent number: 11456234Abstract: A piezoelectric cooling chamber and method for providing the cooling system are described. The cooling chamber includes a piezoelectric cooling element, an array of orifices and a valve. A vibrational motion of the piezoelectric cooling element causes an increase or decrease in a chamber volume as the piezoelectric cooling element is deformed. The array of orifices is distributed on at least one surface of the chamber. The orifices allow escape of fluid from within the chamber during the decrease in the chamber volume in response to the vibration of the piezoelectric element. The valve is configured to admit fluid into the chamber when the chamber volume increases and to substantially prevent fluid from exiting the chamber through the valve when the chamber volume decreases.Type: GrantFiled: March 29, 2019Date of Patent: September 27, 2022Assignee: Frore Systems Inc.Inventors: Suryaprakash Ganti, Seshagiri Rao Madhavapeddy
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Patent number: 11448209Abstract: A breather assembly for a peristaltic pump comprises a breather tube and a cap connected to the breather tube. The cap comprises a sealing portion. One of the breather tube and the cap comprises a guide track and the other of the breather tube and the cap comprises a protrusion. The guide track comprises first and second sections separated by a first formation. The second section is bounded at its distal end by a second formation. The protrusion can pass the first formation when a first force is applied to the cap. The protrusion can pass the second formation when a second force is applied to the cap. When the protrusion is located within the first section, the sealing portion of the cap seals against the breather tube. When the protrusion is located within the second section, the sealing portion of the cap is spaced from the breather tube.Type: GrantFiled: February 4, 2019Date of Patent: September 20, 2022Assignee: Watson-Marlow Bredel B.V.Inventors: Vincent Molenveld, Ronald Oude Vrielink
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Patent number: 11448218Abstract: The invention relates to a displacement machine according to the spiral principle, in particular a scroll compressor or scroll expander, with a high-pressure chamber, a low-pressure chamber and an orbiting displacement spiral, which engages in a counter-spiral such that chambers are formed between the displacement spiral and the counter-spiral for receiving a working medium, wherein a counter-pressure chamber is formed between the low-pressure chamber and the displacement spiral. According to the invention a pressure regulating device which is fluidically connected to the counter-pressure chamber sets a pressure difference between the counter-pressure chamber and the low-pressure chamber by means of a set value specified by the computing unit.Type: GrantFiled: November 18, 2016Date of Patent: September 20, 2022Assignee: OET GmbHInventors: Roman Lässer, Christian Schmälzle, Uwe Wuitz, Christian Busch, Frank Obrist
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Patent number: 11434887Abstract: A compressor includes a casing, a piston accommodated in a cylinder disposed inside the casing to reciprocate forward and backward, the piston being configured to define a suction space in which a refrigerant is accommodated therein, a suction muffler connected to the piston to guide the refrigerant to the suction space, a suction guide disposed behind the suction muffler and fixed to the casing, the suction guide being disposed parallel to the suction muffler in an axial direction, and a suction pipe passing through the casing to extend into the suction guide, the suction pipe being configured to suction the refrigerant. A portion of the suction muffler is disposed to overlap the suction guide in a direction crossing the axial direction.Type: GrantFiled: October 1, 2020Date of Patent: September 6, 2022Assignee: LG Electronics Inc.Inventors: Kyunyoung Lee, Kiwon Noh
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Patent number: 11434894Abstract: An air sampling pump includes a reciprocating piston for operating a diaphragm assembly. The diaphragm includes a valve head including a fluid inlet and a fluid outlet and a fluid chamber defining a fluid path between the inlet and outlet. A diaphragm sealing engages the valve head and encloses the fluid chamber. The diaphragm includes a piston diaphragm membrane portion coupled to the piston for reciprocating with the piston and reciprocation of the piston causes a change in air pressure within the fluid chamber to cause air to move from the fluid inlet toward the fluid outlet. The diaphragm includes a damper membrane portion, which cooperate to reduce an amplitude of pulsation in the airflow at the fluid inlet and fluid outlet.Type: GrantFiled: September 1, 2020Date of Patent: September 6, 2022Assignee: IDEAL Industries, Inc.Inventors: Brandon Trainer, Steve Tearle, Aamir Qureshi
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Patent number: 11434913Abstract: A vacuum pump system for evacuating at least five volumes comprising a turbomolecular pump and a forevacuum pump arranged to pump an output of the turbomolecular pump arrangement to atmosphere. The turbomolecular pump has at least five pumping stages separated by rotor blades. Not more than three pumping stages have pumping speeds in excess of ? of the highest pumping speed when under vacuum and/or a pumping port cross section in excess of ? of the highest pumping port cross section, and at least two pumping stages have pumping speeds less than ¼ of the highest pumping speed when under vacuum and/or a pumping port cross section of less than ¼ of the biggest pumping port cross section. The ratio of pressures between the pumping stage with the highest pressure and the pumping stage with the lowest pressure is at least 100000:1 when under vacuum.Type: GrantFiled: August 27, 2019Date of Patent: September 6, 2022Assignee: Thermo Fisher Scientific (Bremen) GmbHInventors: Alexander A. Makarov, Wilko Balschun
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Patent number: 11421665Abstract: Embodiments of the invention provide a pump assembly for a hydraulic tool. The pump assembly can include a reciprocating element that is configured to move between a retracted position and an extended position, a cam surface in the reciprocating element that can engage cam followers, a rotating element that can receive rotational input, and a base that can at least partially surrounds the rotating element. Movement of the cam followers along the cam surface can move the reciprocating element from the retracted position to the extended position.Type: GrantFiled: July 17, 2020Date of Patent: August 23, 2022Assignee: Milwaukee Electric Tool CorporationInventor: James O. Myrhum, Jr.
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Patent number: 11415140Abstract: A compressor unit for oil wells, operating independently from conventional AIB rod pumps, which allows regulated gas extraction to keep the gas pressure constant inside the well and thus allowing the extraction of oil without the inconveniences of traditional pumping systems.Type: GrantFiled: October 30, 2020Date of Patent: August 16, 2022Assignee: Hoerbiger Service Inc.Inventor: Juan Carlos Marie Arlandis
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Patent number: 11415120Abstract: A waterproof emulsion pump with an external spring includes a pump body extending into a bottle body, a pump chamber is arranged in the pump body, a locking bottle cover is connected to the pump body, a pumping component is arranged in the pump chamber, and a locking cover is connected to the pump body; a one-way valve is arranged at a lower end of the pump chamber, an upper end of the pumping component is connected with a pressing head capable of driving the pumping component to operate, the pumping component includes an upper pump rod, a spring is arranged between the upper pump rod and the locking cover, a lower end of the upper pump rod is connected with a lower pump rod, a liquid inlet groove opening is formed in the lower pump rod.Type: GrantFiled: March 23, 2020Date of Patent: August 16, 2022Assignee: MAJESTY PACKAGING SYSTEMS LIMITEDInventors: Peihui Liang, Maoyong Zhu, Yonglei Zhang, Jinkao Liang
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Patent number: 11408416Abstract: Pump systems with pinch valves for surgical procedures. At least some of the example embodiments are pump systems including a stationary housing defining a front face. A tube support extends outwardly from the front face for aligning and supporting a first tube and a second tube. At least one pinch member is movable relative to the tube support by a power actuator operably coupled to the at least one pinch member and configured to have three orientations that define: a first arrangement of the pinch member relative to the tube support configured to pinch closed the first tube, a second arrangement of the at least one pinch member relative to the tube support configured to pinch closed the second tube, and a third arrangement of the at least one pinch member relative to the tube support configured to pinch closed neither the first tube nor the second tube.Type: GrantFiled: December 2, 2020Date of Patent: August 9, 2022Assignees: SMITH & NEPHEW, INC., SMITH & NEPHEW ORTHOPAEDICS AG, SMITH & NEPHEW ASIA PACIFIC PTE. LIMITEDInventors: Mathew Mitchell, Mikhael Lyssounkine, William Sant
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Patent number: 11384747Abstract: A heat insulating vessel for a low temperature liquefied gas pump, which includes an inner tank configured to accommodate low temperature liquefied gas, an outer tank provided externally around the inner tank, and a low temperature liquefied gas pump disposed inside the inner tank. The outer tank has an outer tank upper part that is an upper end portion thereof, and an outer tank body other than the outer tank upper part. A lid structure having a heat-insulated structure detachably fitted into an upper part of the inner tank. The pump is fixed to the lid structure, and a suction pipe and a discharge pipe are insertedly fixed to the lid structure. A vacuum insulating layer is provided between the inner tank and the outer tank. With this heat insulating vessel for the low temperature liquefied gas pump, adiabaticity of the lid structure and maintainability of the pump are increased.Type: GrantFiled: November 8, 2017Date of Patent: July 12, 2022Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Daisuke Yoshimoto, Shoichiro Hayashi, Akira Yamaguchi, Koichiro Yamanouchi, Yuya Yamane, Naoya Kodama
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Patent number: 11371509Abstract: A circulation pump assembly (22) includes an electrical drive motor (10) and an electronic control device (12) controlling the drive motor (10). The control device (12) is configured for the speed control of the drive motor (10) according to a control schema (I, II, III). The control device (12) includes a detection function (42) which is configured to detect a condition variable representing an operating condition, from a parallel flow path (16, 18, 20) with a second circulation pump assembly (22). The control device (12) is also configured such that it can change the control schema (I, II, III) on the basis of a condition variable detected by the detection function (42). Further an arrangement of at least two such circulation pump assemblies (22) and a method for the control of such two circulation pump assemblies (22) are provided.Type: GrantFiled: February 26, 2018Date of Patent: June 28, 2022Assignee: GRUNDFOS HOLDING A/SInventor: Thomas Blad
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Patent number: 11359988Abstract: A vacuum pump comprises: a pump rotor portion configured such that multiple rotor blade stages including stacking portions formed in a ring shape and turbine blades radially formed on an outer peripheral side of the stacking portions are stacked on each other; a rotor shaft to which inner peripheral surfaces of the stacking portions of the multiple rotor blade stages stacked on each other are fixed; and a communication path allowing communication between a clearance space between the rotor shaft and each stacking portion and a pump exhaust path in which the turbine blades are arranged and discharging gas in the clearance space through the pump exhaust path.Type: GrantFiled: May 11, 2020Date of Patent: June 14, 2022Assignee: Shimadzu CorporationInventor: Masashi Manabe
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Patent number: 11353023Abstract: Disclosed is a pump system for a semiconductor chamber includes a housing having a front chamber and a rear chamber, a roots-type rotor provided to the front chamber of the housing, a screw-type rotor provided to the rear chamber, a shaft member coupled through the roots-type rotor and the screw-type rotor, and a driving motor provided to the outside of the housing in such a way as to be axially connected to the shaft member to provide power for driving the rotors. A fluid pipe is provided to the outside of the housing to connect the front chamber and the rear chamber. The fluid pipe is provided with a heater and/or a cooler to heat or cool the fluid flowing through the fluid pipe.Type: GrantFiled: June 13, 2017Date of Patent: June 7, 2022Assignee: PLAN CO., LTDInventor: In Cheol Lee
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Patent number: 11353013Abstract: A multi-stage compressor includes a compression module configured to compress a refrigerant therein through reciprocation of a plurality of pistons provided in a front housing, a rear housing coupled to the front housing to define an internal space between the front housing and the rear housing; a separation plate located between the front housing and the rear housing to separate the internal space between the front housing and the rear housing into a front space and a rear space; and a partition wall coupled to the rear housing to partition the rear space into an injection space before a refrigerant injected thereinto is primarily compressed, a primary discharge space from which the refrigerant is discharged in a primary compressed state by some of the pistons, and a secondary discharge space from which the primary compressed refrigerant is discharged.Type: GrantFiled: January 10, 2020Date of Patent: June 7, 2022Assignees: Hyundai Motor Company, Kia Motors CorporationInventor: Seong Bin Jeong