Patents Examined by Daniel S Collins
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Patent number: 10648157Abstract: The present invention relates to a hydraulic system comprising a first actuator, a first variable displacement pump fluidly connected to the first actuator via a first circuit and adapted to drive the first actuator. The system further comprises a second actuator and a second pump fluidly connectable to the second actuator via a second circuit and adapted to drive the second actuator, wherein the second pump is fluidly connectable to the first actuator via a first control valve, and wherein the second pump is fluidly connectable to the second actuator via a second control valve.Type: GrantFiled: October 2, 2017Date of Patent: May 12, 2020Assignee: J.C. BAMFORD EXCAVATORS LIMITEDInventor: James Hewitt
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Patent number: 10641257Abstract: A reciprocating piston machine includes a first cylinder and a first piston assigned to the first cylinder and a second piston assigned to the first cylinder or a second cylinder. The reciprocating piston machine further includes a crankshaft having an eccentric crankshaft journal and a drive shaft coupling configured for coupling a drive shaft of a drive motor for driving the crankshaft, a first connecting rod configured to deflect the first piston and configured to be moved by the eccentric crankshaft journal, and a second connecting rod configured to deflect the second piston and configured to be moved by a bearing pin. The reciprocating piston machine additionally includes at least one of a first elastomer element arranged between the bearing pin and the first connecting rod and a second elastomer element arranged between the bearing pin and the second connecting rod.Type: GrantFiled: January 19, 2017Date of Patent: May 5, 2020Assignee: WABCO EUROPE BVBAInventors: Klaus Bredbeck, Eugen Kloos, Uwe Stabenow
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Patent number: 10641298Abstract: A hydraulic control valve maintains the pressure at a control port at a desired percentage of the pressure at two other ports as the pressure at the two other ports varies. Upon the pressure at the control port reaching a predetermined pressure setting, a fourth port will open to maintain the control port at a second desired percentage of the two other ports.Type: GrantFiled: October 10, 2017Date of Patent: May 5, 2020Assignee: HydraForce, Inc.Inventors: Travis Schmidt, Scott Parker, Joel Mekkes
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Patent number: 10641299Abstract: A monitoring device for determining a position of a displacement piston (1) guided longitudinally movably in a housing (7) and, in the housing (7) and delimits a fluid chamber (3, 5) with a variable volume and connected via a pressure supply connector (9, 11) to a pressure fluid control device (13). A volumetric flow regulating device (45) and a pressure determining device (47) are connected between the pressure fluid control device (13) and the measuring connector (15, 17) of the fluid chamber (5, 3). The pressure determining device (47) outputs a measuring signal when the displacement piston (1) reaches an end position.Type: GrantFiled: November 23, 2016Date of Patent: May 5, 2020Assignee: SAUTER FEINMECHANIK GMBHInventors: Steffen Giesler, Steffen Nixdorf
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Patent number: 10626896Abstract: The present inventors have recognized that contaminants in hydraulic fluid in a hydraulic system of an off-highway implement can be efficiently filtered by a filtration system of the source of hydraulic power by conducting an operation which controls existing valves for precisely operating cylinders of the system to return the fluid to the source of hydraulic power through a connector with little or no fluid going through cylinders. Such an operation can be advantageously executed immediately following connection of the source of hydraulic power to the manifold of the implement.Type: GrantFiled: August 10, 2018Date of Patent: April 21, 2020Assignee: CNH Industrial America LLCInventors: Michael W. Freisleben, Jerry L. Brinkley, Joshua M. Guarino
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Patent number: 10619726Abstract: A hydraulic system (1) of an automatic transmission of a motor vehicle includes a hydraulic pump (2) powered by a drive engine for supplying pressure to the hydraulic system (1). A hydraulic reservoir (10) by which, when the drive engine is at rest, a pressure drop in a main pressure circuit (7) of the hydraulic system (1) can at least be delayed. The hydraulic reservoir (10) is connected to the main pressure circuit (7) by way of an orifice (14) or a throttle.Type: GrantFiled: July 22, 2016Date of Patent: April 14, 2020Assignee: ZF FRIEDRICHSHAFEN AGInventors: Alexander Paul, Bernd Lutz
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Patent number: 10619653Abstract: An electrohydraulic linear actuator comprises a housing consisting of a tubular profile, which forms a housing shell and in which there is a plurality of cavities, and which is closed at the ends by two housing covers fitted to the ends of the housing shell. A first cavity of the tubular profile forms a cylinder which forms the hydraulic cylinder of a double-acting synchronous cylinder and a second cavity which extends parallel to the first cavity accommodates a hydraulic unit in addition to the hydraulic cylinder, and a hydraulic oil reservoir is formed in said second cavity. Two working chambers of the hydraulic cylinder are separated from each other by a piston unit. The housing has at least one through-hole for a coupling element which forms a mechanical interface with the piston unit. The electric motor of the hydraulic unit is configured as a brushless outrunner motor.Type: GrantFiled: November 19, 2018Date of Patent: April 14, 2020Assignee: HAWE ALTENSTADT HOLDING GMBHInventors: Matthias Grupp, Peter Roider
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Patent number: 10604916Abstract: A shovel may has a first pump that discharges a first hydraulic oil, a second pump that discharges a second hydraulic oil, a pump/motor that discharges a third hydraulic oil, an arm cylinder that at least the first hydraulic oil can flow into, and a boom cylinder that at least the second hydraulic oil can flow into. When the arm cylinder and the boom cylinder operate simultaneously, the arm cylinder is actuated by the first hydraulic oil or the third hydraulic oil, and the boom cylinder is actuated by the second hydraulic oil.Type: GrantFiled: September 8, 2016Date of Patent: March 31, 2020Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.Inventors: Eisuke Matsuzaki, Hiroshi Ishiyama, Koichiro Tsukane, Kazushi Ishida
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Patent number: 10590927Abstract: A lubricating sealing system for a fluid end includes a fluid end, a sleeve, a plunger, and a lubrication system. The sleeve is coupled to an internal surface of the fluid end. The plunger reciprocates in a linear manner through the sleeve and into a pressure chamber of the fluid end. The lubrication system is in communication with the plunger and configured to provide lubricant through an interior of the plunger for routing to surfaces between the plunger and the sleeve. The lubricant is pressurized and moved via the reciprocating of the plunger and create a positive pressure on the lubricant over the pressures experienced in the pressure chamber of the fluid end. The positive pressure creates a barrier and pushes away contaminants from the plunger seals thereby avoiding wash out.Type: GrantFiled: August 15, 2018Date of Patent: March 17, 2020Assignee: ST9 GAS AND OIL, LLCInventor: Chris Buckley
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Patent number: 10590627Abstract: The invention discloses a hydraulic control system of a leveling hydraulic cylinder of a loading head, characterized by comprising a hydraulic pump, a two-position three-way electronic control reversing valve, a three-position four-way electronic control reversing valve, a three-position four-way cam valve and a hydraulic cylinder. The invention not only can perform leveling by using the electric control system, but also comprises the hydraulic cam valve controlling the hydraulic cylinder for self-leveling, and the two leveling manners can be independently used or switched mutually, thus achieving a better leveling effect.Type: GrantFiled: March 27, 2018Date of Patent: March 17, 2020Assignee: NANJING FREETECH ROAD MAINTENANCE VEHICLE MANUFACTURING CORPORATIONInventors: Weibin Shi, Hai Zou, Huiwen Wang
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Patent number: 10584725Abstract: A method of setting an actuator capable of accurately detecting a position of a piston using a plurality of sensor units is provided. The method includes a detection value acquisition step of moving a piston in a direction of an axis inside a cylinder and acquiring a detection value from each of a first sensor unit and a second sensor unit for each position of the piston, and a controlling sensor unit-setting step of setting a controlling sensor unit that is used for control of a two-way piston from among the first sensor unit and the second sensor unit on the basis of the detection values obtained for the first sensor unit and the second sensor unit.Type: GrantFiled: March 14, 2018Date of Patent: March 10, 2020Assignee: Honda Motor Co., Ltd.Inventors: Itsuki Shimazaki, Yuichi Hidaka
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Patent number: 10583543Abstract: Disclosed herein is an improved hydraulic torque wrench pump (HTWP) which utilizes a combined filtration system and cooling system for filtering and cooling substantially all the oil returned to the pump including from a hydraulic torque wrench. The hydraulic torque wrench pump includes an electric motor and one or more pumping elements arranged in a protective frame. The electric motor used in association with the hydraulic pump has a high-efficiency design that includes a high power to height ratio and yields efficiency in a range of 90% to 95%. A sealed oil tank is used for storing the oil. The sealed oil tank helps in restricting one or more impurities from entering and contaminating the oil.Type: GrantFiled: March 20, 2019Date of Patent: March 10, 2020Assignee: VP Sales and Manufacturing LPInventors: Donald Tiskevics, Brent Hendricks
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Patent number: 10563676Abstract: Apparatuses, systems and methods are provided for controlling one or more fluid actuated devices; e.g., actuators such as hydraulic cylinders. A method is provided, for example, involving actuation fluid, a first actuator and a second actuator. During this method, a quantity of the actuation fluid within the second actuator is pressurized using a quantity of the actuation fluid within the first actuator.Type: GrantFiled: June 23, 2014Date of Patent: February 18, 2020Assignee: VECNA ROBOTICS, INC.Inventor: Daniel Theobald
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Patent number: 10563677Abstract: The subject matter of this specification can be embodied in, among other things, an articulated joint includes a first rotary actuator having a first housing defining a first arcuate chamber comprising a first cavity, and an arcuate-shaped first piston having a first radius of curvature and disposed in said first housing for reciprocal movement in the first arcuate chamber, a second rotary actuator having a second housing defining a second arcuate chamber comprising a second cavity, and an arcuate-shaped second piston having a second radius of curvature and disposed in said second housing for reciprocal movement in the second arcuate chamber, wherein a first radial side of the first piston relative to the first radius of curvature is in bearing contact with a first radial side of the second piston relative to the second radius of curvature at a contact point between the first axis and the second axis.Type: GrantFiled: December 21, 2017Date of Patent: February 18, 2020Assignee: Woodward, Inc.Inventors: Kamran Eftekhari Shahroudi, Barry Brinks, Brian Hoemke
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Patent number: 10562260Abstract: A pneumatic artificial muscle (PAM) actuator body can be formed from an elastic material that includes an inflatable chamber and a restraining component, such as flexible, but inextensible fibers, that causes the actuator to contract when the chamber is inflated with fluid (e.g., air or water). The actuator body can be cylindrical or flat. The actuator body can include a sensor layer formed of an elastic material including a microchannel filled with a conductive fluid to sense the expansion of the actuator body. The sensor layer can be configured to expand when the actuator body is inflated causing the electrical resistance of the conductive fluid to change. A sensor layer between the actuator body and restraining component can be used to measure changes in the contraction force of the actuator and a sensor layer outside of the restraining component can be used to measure changes in the length of the actuator.Type: GrantFiled: January 21, 2014Date of Patent: February 18, 2020Assignee: President and Fellows of Harvard CollegeInventors: Yong-Lae Park, Robert J. Wood, Jobim Jose Robinsantos, Eugene C. Goldfield
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Patent number: 10562180Abstract: A fluidic robotic actuator configured to assume at least a neutral position, the fluidic robotic actuator includes a first and second plate defining respective planar portions that are disposed in parallel planes in the neutral position. The fluidic robotic actuator also includes a plurality of elongated bellows extending between the first and second plates, the bellows each having a central main axis that is parallel to the central main axis of the other bellows in the neutral position, the main axis of the bellows being perpendicular to the parallel planes of the first and second plates in the neutral position, the bellows being coupled to the first and second plates at respective first and second ends of the bellows.Type: GrantFiled: March 29, 2017Date of Patent: February 18, 2020Assignee: OTHER LAB, LLCInventors: Maria J. Telleria, Jonathan B. Pompa, Peter S. Lynn, Kevin B. Albert, Gabriel F. Hein, Thomas F. Allen, Kevin C. Kemper, Saul Thomas Griffith
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Patent number: 10557461Abstract: A drive device includes a housing forming a sump. A pump and motor are mounted on a center section having a porting system and a pair of ports with check plugs disposed therein. A bypass arm is engaged to one end of a bypass shaft external to the housing and rotates the bypass shaft to selectively cause engagement fingers to move each check plug to an open position. A housing projection is contacted by the bypass arm to selectively limit rotation thereof. The axes of rotation of a swash plate trunnion shaft, a pump input shaft and a motor output shaft may all be disposed in a single plane. The input shaft is supported by a housing bearing and an opening in the center section and is restrained from axial movement by the bearing and a thrust surface on the center section.Type: GrantFiled: October 16, 2017Date of Patent: February 11, 2020Assignee: Hydro-Gear Limited PartnershipInventors: Jesse L. Probst, Eric S. Phanco, Joseph P. Niemerg, Shane A. Deters
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Patent number: 10556637Abstract: A bicycle operating device comprises a base member, an operating member, a hydraulic unit, an electrical switch, a wireless communicator, and a power supply. The base member includes a first end and a second end opposite to the first end. The operating member is pivotally coupled to the base member about a first pivot axis. At least part of the hydraulic unit is disposed closer to the second end than the first pivot axis when viewed from a first direction parallel to the first pivot axis. The power supply is electrically connected to the wireless communicator to supply electrical power to the wireless communicator. At least one of the wireless communicator and the power supply is at least partly disposed closer to the first end than the first pivot axis when viewed from the first direction.Type: GrantFiled: August 26, 2016Date of Patent: February 11, 2020Assignee: SHIMANO INC.Inventors: Atsushi Komatsu, Takafumi Nishino, Takehiko Nakajima
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Patent number: 10550861Abstract: A steering gear includes a housing defining a chamber. A piston divides the chamber into first and second chamber portions. The piston is moveable along a linear axis relative to the housing upon pressurization of fluid in one of the first and second chamber portions. A pressure relief vents pressurized fluid from one of the first and second chamber portions to one other of the first and second chamber portions upon movement of the piston to a predetermined position. The pressure relief assembly includes a first valve at a first end of the pressure relief assembly and a second valve at a second end of the pressure relief assembly. The pressure relief assembly is axially movable relative to the piston to adjust the position of the first valve and the second valve relative to the piston.Type: GrantFiled: October 23, 2017Date of Patent: February 4, 2020Assignee: TRW AUTOMOTIVE U.S. LLCInventor: Benjamin W. Schoon
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Patent number: 10539164Abstract: A hydraulic actuator includes a hollow tube that has a first opening at a first end of the hollow tube and that has a second opening at a second end of the hollow tube. The hollow tube contains hydraulic fluid. A moveable magnet moves within hollow tube as a result of a magnetic field within the hollow tube. A magnetic field source located outside the hollow tube creates the magnetic field within the hollow tube. When the moveable magnet moves to the first end of the hollow tube, a first piston pushes hydraulic fluid out of the first opening. When the moveable magnet moves to the second end of the hollow tube a second piston pushes hydraulic fluid out of the second opening.Type: GrantFiled: November 16, 2016Date of Patent: January 21, 2020Inventor: William Davis Simmons