Patents Examined by Abiy Teka
  • Patent number: 11326628
    Abstract: An actuator system for controlling a control surface of an aircraft, which includes a control structure which defines the control surface and the control structure has an axis of rotation about which the control structure can rotate relative to the aircraft. A first actuator assembly has a first actuator arm and a second actuator assembly has a second actuator arm. The first actuator assembly and the second actuator assembly are spaced apart from one another along the axis of rotation. The first actuator arm is connected to a first band member and the first band member is connected to the control structure on a first side of the axis of rotation and the second actuator arm is connected to a second band member and the second band member is connected to the control structure on a second opposing side of the axis of rotation.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: May 10, 2022
    Assignee: THE BOEING COMPANY
    Inventor: David W. Kirkbride
  • Patent number: 11319693
    Abstract: To make it possible to prevent a decrease in work speed due to a decrease in the speed of a given actuator when an operator unintentionally performs a fine operation of the control lever of the other actuator in a state in which the given actuator is driven by the hydraulic fluid delivered from a plurality of pumps, a controller (41) sets, as a composite dead zone line serving as a boundary of a composite dead zone, a composite dead zone line such that as an operation amount in one direction of a control lever (12L) or (13L) of a control lever device (12) or (13) is increased, the width of the composite dead zone corresponding to an operation amount in the other direction of the control lever is widened, and corrects the operation amount in the other direction such that the demanded flow rate of an actuator increases from zero, when the control lever is operated in the other direction in a state in which the operation amount in the one direction of the control lever remains within a range of the composite dea
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: May 3, 2022
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Hiromasa Takahashi, Kenji Hiraku, Teppei Saitoh, Syouhei Sugiki
  • Patent number: 11313461
    Abstract: A torque converter is provided with a stator having adjustable fluid flow holes for changing the K-factor of the torque converter, as needed. The stator includes a base plate with fluid flow openings and an adjustable plate with fluid flow openings. The plates matingly engage, such that the fluid openings are adjacent one another. The degree of overlap of the openings can be varied from fully aligned to substantially misaligned by rotating the adjustable plate relative to the base plate, and thereby controlling the fluid flow through the openings. In alternative embodiments the stator holes can be automatically opened and closed in response to changes in fluid pressure in the torque converter, via reed values or spring biased balls.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: April 26, 2022
    Inventor: David J. Goerend
  • Patent number: 11300143
    Abstract: A drive device for driving a fluid pressure cylinder has an air supply source which supplies air, a switching valve which switches between the supply and discharge of the air to and from the fluid pressure cylinder, bypass piping which connects the head-side cylinder chamber and rod-side cylinder chamber of the fluid pressure cylinder, and a bypass switching valve which switches between the states of flow of air through the bypass piping. Air in the head-side cylinder chamber is supplied to the rod-side cylinder chamber through the bypass piping by setting the bypass switching valve to an open state in a return stroke of the fluid pressure cylinder.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: April 12, 2022
    Assignee: SMC CORPORATION
    Inventors: Satoru Ito, Gen Tsuchiya, Masayuki Ishikawa, Hisashi Yajima, Takehiko Kanazawa
  • Patent number: 11293163
    Abstract: A hydraulic drive apparatus includes a boom flow rate control valve, a target boom cylinder speed calculation part, a pressing force calculation part, a correction part, and a boom flow rate operation part. The target boom cylinder speed calculation part calculates a target boom cylinder speed for making the construction surface by the bucket closer to the target construction surface. The pressing force calculation part calculates the pressing force by which the bucket is pressed against the construction surface, based on the cylinder thrust of the boom cylinder and the center-of-gravity position information on the center-of-gravity position of the work device. The correction part corrects the target boom cylinder speed to make the deviation between the target pressing force and the calculated pressing force closer to 0. The boom flow rate operation part operates the boom flow rate control valve to provide the corrected target boom cylinder speed.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: April 5, 2022
    Assignees: Kobe Steel, Ltd., KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Toshihiro Nogi, Satoshi Maekawa, Akira Tsutsui, Sho Fujiwara
  • Patent number: 11286960
    Abstract: A method for controlling a hydraulic actuator (2) of a system (1) by means of a valve having a valve element is described. A position of the valve element determines a pressure supplied to a hydraulic actuator (2). In such a method a variable dead band should be minimized. To this end a start position of the valve element is preadjusted as a function of at least one parameter outside the hydraulic actuator (2).
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: March 29, 2022
    Assignee: DANFOSS POWER SOLUTIONS APS
    Inventor: Kim Skov
  • Patent number: 11286644
    Abstract: A hydraulic drive apparatus includes a boom flow rate control valve, a target boom cylinder speed calculation part calculating a target boom cylinder speed for making a construction surface by a bucket closer to a target construction surface based on the cylinder speed of a boom cylinder and the like, and a boom flow rate operation part. The boom flow rate operation part operates the boom flow rate control valve to make a boom cylinder supply flow rate be a target supply flow rate corresponding to the target boom cylinder speed when the target boom cylinder speed direction coincides with a cylinder thrust direction, and operates the boom flow rate control valve to make the boom cylinder discharge flow rate be a target discharge flow rate corresponding to the target boom cylinder speed when the target boom cylinder speed direction is opposite to the cylinder thrust direction.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: March 29, 2022
    Assignees: Kobe Steel, Ltd., KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Satoshi Maekawa, Toshihiro Nogi, Sho Fujiwara
  • Patent number: 11266057
    Abstract: An implement includes a mechanical coupling component configured to removably couple the implement to a support machine, a hydraulic fluid supply line configured to receive a supply flow of hydraulic fluid under pressure from a hydraulic system associated with the support machine, and a hydraulically-powered component configured to be actuated using the hydraulic fluid. The implement also includes a hydraulic fluid recovery system comprising a hydraulic fluid return line configured to fluidically couple to the hydraulic system associated with the support machine and provide a return flow of hydraulic fluid to the hydraulic system. A hydraulic fluid reservoir is configured to, when the hydraulic fluid return line is decoupled from the hydraulic system associated with the support machine, receive a portion of the hydraulic fluid from the hydraulic fluid return line when a fluid pressure in the hydraulic fluid return line increases to a pressure threshold.
    Type: Grant
    Filed: October 14, 2020
    Date of Patent: March 8, 2022
    Assignee: Deere & Company
    Inventors: Michael M. Whitney, Randall A. Maro
  • Patent number: 11268545
    Abstract: A hydraulic control arrangement for simultaneously supplying at least two hydraulic consumers with predefinable individual pressure medium flow rates includes a hydraulic pump having an adjustable swept volume, and at least two valve arrangements each including a variable metering restrictor and a pressure balance arranged downstream of the variable metering restrictor. Each pressure balance is configured to be acted on in an opening direction by pressure downstream of the respective variable metering restrictor and to be acted on in a closing direction by a highest load pressure or by a pressure derived therefrom. Each valve arrangement is arranged between a pump line, which leads away from the hydraulic pump, and a consumer of the at least two hydraulic consumers. The arrangement further includes an electronic control device, by which the hydraulic pump is actuatable such that it conveys a sum of the predefinable individual pressure medium flow rates.
    Type: Grant
    Filed: October 26, 2020
    Date of Patent: March 8, 2022
    Assignee: Robert Bosch GmbH
    Inventors: Botond Szeles, Matthias Jerg
  • Patent number: 11261889
    Abstract: The present disclosure provides an aircraft thermal management system. The aircraft thermal management system includes a first hydraulic system for circulating a first hydraulic fluid, a second hydraulic system for circulating a second hydraulic fluid, and a third hydraulic system for circulating a third hydraulic fluid. The aircraft thermal management system also includes a controller configured to: (i) determine a temperature of the first hydraulic fluid, a temperature of the second hydraulic fluid, and a temperature of the third hydraulic fluid, and (ii) based on the determined temperature of the first hydraulic fluid, utilize the second hydraulic fluid and/or the third hydraulic fluid to modify an operational temperature of the first hydraulic fluid.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: March 1, 2022
    Assignee: The Boeing Company
    Inventor: Jianmin Liao
  • Patent number: 11255352
    Abstract: A transmission system (10) includes a first piston (12), a second piston (14) and a modulator piston (16). The first piston (12) receives an input force (FIN), the second piston (14) transmits an output force (FOUT), and the modulator piston (16) transmits a modulating force (FACT>which modulates the input force (FIN) received by the second piston (14) to implement tremor cancellation and force and/or provide variable motion scaling.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: February 22, 2022
    Assignee: UNIVERSITY OF DUNDEE
    Inventor: Luigi Manfredi
  • Patent number: 11255357
    Abstract: The present invention makes a rotary movement smooth, the rotary movement allowing direct detection of the movement of an output member of a rotary clamp. In a clamp, an output member is accommodated in a cylinder hole. A first valve chamber, to which compressed air is supplied, is provided between a lower wall of a housing and the output member. A second valve chamber is a hollowed out portion of the output member so as to be provided open toward the first valve chamber. A valve rod is inserted into the second valve chamber from the lower wall. A valve rod passage that allows the second valve chamber to communicate with outside air is provided in the valve rod, and a seal section is provided in a peripheral gap where the valve rod and the second valve chamber move relatively to one another.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: February 22, 2022
    Inventor: Masahiro Yoshimi
  • Patent number: 11247651
    Abstract: A hydraulic unit for generating brake pressure for a hydraulic brake system, comprising a housing which is produced from a cast blank, wherein the cast blank has at least one receiving cavity which is provided for machining to form a receiving profile for sealingly receiving a connecting piece, which is connected to a fluid container and can be plugged into the receiving profile along a plug-in axis, wherein the housing comprises at least one piston bore for receiving at least one piston, which is driven along a piston bore axis into the cast blank.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: February 15, 2022
    Assignee: Continental Teves AG & Co. OHG
    Inventors: Jörg Loke, Horst Krämer, Manfred Rüffer, Andreas Bischoff, Sascha Gerber, Ingo Knewitz
  • Patent number: 11248631
    Abstract: There is disclosed a rotary actuator apparatus for hydraulically or pneumatically rotating a robotic joint. In an embodiment the apparatus comprises: a curved piston rotatably coupled to an axel shaft, and positioned within a curved piston chamber; resilient barrier modules are adapted to separate the curved piston within the curved piston chamber from first and second hydraulic or pneumatic chambers on either side of the curved piston chamber; whereby, in use, the curved piston is configured to rotate about the axel shaft upon hydraulic or pneumatic pressure being applied to at least one of the first and second hydraulic or pneumatic chambers.
    Type: Grant
    Filed: January 18, 2021
    Date of Patent: February 15, 2022
    Assignee: Mirsee Robotics Inc.
    Inventor: Robert David Ings
  • Patent number: 11248362
    Abstract: A closed loop feedback circle drive system utilized onboard a motor grader includes an operator input device, a blade, and a multi-speed hydraulic motor having a motor output shaft. The motor output shaft is mechanically linked to blade such that motor output shaft rotation drives rotation of the blade about a blade rotation axis. A controller is operably coupled to the operator input device and to the multi-speed hydraulic motor. The controller is configured to: (i) receive blade rotation commands via the operator input device to rotate the blade about the rotation axis in a commanded manner; and (ii) control the multi-speed hydraulic motor to implement the blade rotation commands, while repeatedly adjusting the rotational speed of the motor output shaft to reduce variations in a rotational velocity of the blade due to changes in blade loading conditions occurring during motor grader operation.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: February 15, 2022
    Assignee: DEERE & COMPANY
    Inventors: Adam B. Zell, Katherine S. Rogers
  • Patent number: 11248364
    Abstract: To control a rate of increase of a delivery flow rate of a pump for a swing operation in response to a moment of inertia and an operation amount and to achieve both energy efficiency and operability with respect to the swing operation, a work machine including a swing structure 2 disposed on an upper portion of a track structure 1, a work implement 3 disposed in the swing structure 2, a swing motor 16, a hydraulic pump 22, a regulator 24, a directional control valve 31, and an operation device 34 further includes: a target maximum flow rate calculation section 53 configured to calculate a target maximum flow rate Qmax of the pump to correspond to a swing operation amount Ps; a flow rate rate-of-increase calculation section 55 configured to calculate a rate of increase dQ of a command flow rate of the hydraulic pump 22 on a basis of the moments of inertia of the swing structure 2 and the work implement 3 and the swing operation amount Ps; a command flow rate calculation section 56 configured to calculate a com
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: February 15, 2022
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Masatoshi Morikawa, Shinya Imura, Shinji Nishikawa
  • Patent number: 11248360
    Abstract: The present disclosure relates to an implement connectable to a working vehicle. The implement includes an arm, a fastening arrangement arranged at a first part of the arm, and an attaching arrangement connected to a second part of the arm. The fastening arrangement is connectable to the working vehicle. The attaching arrangement is attachable to a working tool. The implement further includes a first hydraulic circuit configured to carry hydraulic fluid to at least one first hydraulic function and a local control element. The implement further includes a digital interface to the working vehicle. The local control element is arranged to receive an operator control signal via said digital interface for operator control of the at least one first hydraulic function.
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: February 15, 2022
    Assignee: ÅLÖ AB
    Inventors: Tomas Nygren, Gustaf Lagunoff
  • Patent number: 11242870
    Abstract: Disclosure herein are hydraulic systems and method of use thereof. The hydraulic systems can include a hydraulic cylinder and a manifold. The hydraulic cylinder can have a first end and a second end. The hydraulic cylinder can include a first port, a second port, and a third port. The first port can be located proximate the first end. The second port cane be located proximate the second end. The third port can be located in between the first port and the second port. The manifold can include a first valve and a second valve. The first valve can be in fluid communication with the first port and the third port. The second valve can be in fluid communication with the second port and the third port.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: February 8, 2022
    Assignee: Norwood Sales, Inc.
    Inventor: Matt Meyer
  • Patent number: 11236771
    Abstract: An actuating piston for a hydrostatic adjustment installation includes at least one sealing and guiding unit which is insertable into a circumferential recess of an actuating piston. The circumferential recess is composed of two regions, and has the effect of improving the guiding and sealing of the actuating piston. The actuating piston is arranged in an adjustment installation.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: February 1, 2022
    Assignee: Robert Bosch GmbH
    Inventor: Bernd Huehn
  • Patent number: 11236490
    Abstract: A shovel includes a lower traveling body, an upper turning body turnably mounted on the lower traveling body, an engine provided in the upper turning body, a hydraulic pump and a hydraulic oil tank provided in the upper turning body, a plurality of hydraulic actuators driven by the hydraulic pump, and a hydraulic circuit connected to the hydraulic pump, wherein the hydraulic circuit includes a plurality of control valves configured to control flows of hydraulic oil between the hydraulic pump and the plurality of hydraulic actuators, and a unified bleed-off valve configured to collectively control bleed-off flowrates of the plurality of control valves, wherein the hydraulic circuit is configured so that a discharge pressure of the hydraulic pump becomes equal to or less than a predetermined pressure during start-up of the engine.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: February 1, 2022
    Assignee: SUMITOMO CONSTRUCTION MACHINERY CO., LTD.
    Inventor: Youji Misaki