Patents Examined by Michael Quandt
  • Patent number: 10589819
    Abstract: A bicycle operating device comprises a base member, an operating member, and a hydraulic unit. The base member comprises a first end portion, a second end portion, and a gripping portion. The gripping portion is provided between the first end portion and the second end portion. The operating member is movably mounted to the base member from a rest position toward an operated position. The hydraulic unit is provided at one of the base member and the operating member. The hydraulic unit comprises a hydraulic cylinder and a piston. The hydraulic cylinder includes a cylinder bore. The piston is arranged in the cylinder bore. The piston is configured to be pulled from an initial position to an actuated position in response to a movement of the operating member from the rest position toward the operated position to supply a hydraulic pressure toward at least one bicycle component.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: March 17, 2020
    Assignee: SHIMANO INC.
    Inventors: Yasuyuki Komada, Takuro Jinbu, Tatsuya Matsushita
  • Patent number: 10584781
    Abstract: The present disclosure relates to a hydro-mechanical transmission having two rotating groups that mount on a common shaft. At least one of the rotating groups operates as a variable displacement pump or motor. At least one of the rotating groups interacts with a torque transfer unit rotatable about the shaft axis relative to both the shaft and the rotating group. The torque transfer unit includes a valve plate, a swash plate and a torque output section that all rotate in unison with one another about the shaft axis relative to the shaft and the rotating group. The valve plate includes an inlet passage for inletting hydraulic fluid to the rotating group and an outlet passage for outletting hydraulic fluid from the rotating group.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: March 10, 2020
    Assignee: Eaton Intelligent Power Limited
    Inventor: Nikhil Shyamsunder Shetty
  • Patent number: 10578130
    Abstract: A reservoir includes first and second chambers, and a piston having first and second ends disposed in the first and second chambers, respectively. The first and second ends isolate a first area from a second area within the first and second chambers. The first area of the first chamber is in fluid communication with a high pressure fluid source and the second area of the first chamber is in fluid communication with a low pressure fluid source. An orifice is formed in the first end and is configured to allow fluid communication between the upper and lower areas of the first chamber. A pumping system and an aircraft are also disclosed.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: March 3, 2020
    Assignee: Hamilton Sundstrand Corporation
    Inventors: David L. Wakefield, Charles E. Reuter
  • Patent number: 10578129
    Abstract: A control system may receive sensor data indicative of respective fluid levels of two or more hydraulic accumulators configured to operate at respective target fluid levels within a hydraulic system. The control system may determine respective errors of the hydraulic accumulators based on the respective fluid levels and respective target fluid levels of the hydraulic accumulators. The respective errors may correspond to pressure errors, fluid volume errors, or other types of errors of the hydraulic accumulators. Responsive to determining the respective errors, the control system may determine that the error of a given hydraulic accumulator is greater than errors of the other hydraulic accumulators and provide instructions to control a hydraulic valve to supply fluid from a single pump of the hydraulic system to the given hydraulic accumulator.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: March 3, 2020
    Assignee: Boston Dynamics, Inc.
    Inventors: Zachary John Jackowski, Alex Khripin, Stephen Berard, Alfred Anthony Rizzi
  • Patent number: 10570934
    Abstract: The present invention relates to a fluidic cylinder. This fluidic cylinder is configured in such a manner that a piston unit is received in an axially displaceable manner within a cylinder tube formed in a rectangular cross-sectional shape. The piston unit has: a base body having the front end of a piston rod staked thereto; a wear ring having the base body received therein and having a magnet incorporated therein; and piston packing adjacent to the wear ring. The piston unit is integrally held at one end of the piston rod. The wear ring and the piston packing are formed in a rectangular cross-sectional shape corresponding to the rectangular cross-sectional shape of the cylinder tube and are provided rotatable relative to the piston rod.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: February 25, 2020
    Assignee: SMC CORPORATION
    Inventors: Masayuki Kudo, Yasunaga Suzuki, Shinichiro Nemoto, Jun Yamada, Eiko Miyasato, Yuu Mizutani, Ken Tamura, Masahiko Kawakami
  • Patent number: 10574088
    Abstract: An energy storage and regeneration system that converts irregular, non-constant, and variable input power to regular, constant, and controlled output power using hydraulics whereby the irregular input power is used to pump hydraulic fluid into an accumulator array where it is stored pressurized. Energy is released in a controlled fashion using a hydraulic motor operated by the pressurized hydraulic fluid from the accumulator array, in accordance with the specified power demand. One or more power units may be deployed depending on the amount of energy required at the output. Each power unit includes a hydraulic motor and associated floating accumulator whose internal pressure is controlled to maintain a substantially constant pressure differential across its associated motor. The system can be integrated into various energy system sources including renewable energy such as wind, PV or thermal solar, wave, tidal, etc.
    Type: Grant
    Filed: June 10, 2017
    Date of Patent: February 25, 2020
    Assignee: Energy Spring Ltd.
    Inventors: Abraham Bauer, Yona Weiss, Yoram Fruehling
  • Patent number: 10563490
    Abstract: The present invention relates to an improved mechanical pumping hydraulic unit for use in oil production or hydrocarbon extraction. The unit is characterized in that it has one motor (1-25), which activates a dual pump (1-15) at one end of the shaft and activates a fan (1-26) at the opposite end of the same shaft. The dual pump (1-15) provides power to the hydraulic power circuit (1-13) and to the hydraulic recirculation circuit (1-14). The motor (1-25), along with the pump (1-15) and the fan (1-26), are inside a metal structure (1-8), or focusing element, which serves to propel air sent by the fan (1-26) through the radiator (1-14-3) and to protect all the components of said unit, such as a tank (1-3) for the hydraulic oil, a compartment or casing for the electrical components (1-5), and a component or dry chamber (1-2) for the hydraulic instrument panel (1-7).
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: February 18, 2020
    Inventor: Alejandro Ladron de Guevara Rangel
  • Patent number: 10563377
    Abstract: A hydraulic working machine is provided that uses a variable displacement pump and open center type flow rate control valve for a controlling a hydraulic actuator, and has a negative control throttle disposed in a center bypass oil passage to generate a negative control pressure. A hydraulic pump control system performs virtual bleed-off control for reducing the bleed-off flow rate of the center bypass oil passage, and can operate the hydraulic actuator with the same performance as an open center control. The control system includes a bypass cut valve disposed upstream from the negative control throttle to reduce flow through the center bypass oil passages, and a negative control pressure output valve that outputs a virtual negative control pressure. The control system is configured to reduce the bleed-off flow rate by operating the bypass cut valve when virtual bleed-off control is performed, and to reduce the pump flow rate by the bleed-off reduction flow rate.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: February 18, 2020
    Assignee: Caterpillar SARL
    Inventors: Kouji Kishida, Yoshihiko Hata, Nobuaki Matoba
  • Patent number: 10533304
    Abstract: A system and method for the controlled lowering and lifting of a load are disclosed. The system and method may include operating a work machine having a hydraulic system including a hydraulic actuator for supporting a load, a first control valve in fluid communication with the actuator, and a controller for operating the first control valve. In one embodiment, the controller includes a first algorithm for operating the first control valve in a load lowering operation. When an operational fault within the hydraulic system is detected, the controller can be configured to enter into a safe lowering mode. In the safe lowering mode, the first algorithm is disabled and a pulse width modulation (PWM) current is sent from the controller to the first control valve. A user interface is provided to allow an operator to control the PWM current duty ratio to allow the load supported by the actuator to be lowered.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: January 14, 2020
    Assignee: Eaton Intelligent Power Limited
    Inventors: Michael Berne Rannow, Vishal Vijay Mahulkar
  • Patent number: 10533582
    Abstract: An energy storage and regeneration system that converts irregular, non-constant, and variable input power to regular, constant, and controlled output power using hydraulics whereby the irregular input power is used to pump hydraulic fluid into an accumulator array where it is stored pressurized. Energy is released in a controlled fashion using a hydraulic motor operated by the pressurized hydraulic fluid from the accumulator array, in accordance with the specified power demand. One or more power units may be deployed depending on the amount of energy required at the output. Each power unit includes a hydraulic motor and associated floating accumulator assembly whose internal pressure is controlled to maintain a substantially constant pressure differential across its associated motor.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: January 14, 2020
    Assignee: Energy Spring Ltd.
    Inventors: Abraham Bauer, Yona Weiss, Yoram Fruehling
  • Patent number: 10527033
    Abstract: A diaphragm for use in a pump is provided. The diaphragm includes a flexible disc-shaped body having a first surface and an outer edge. The flexible disc-shaped body is made of an elastomer material. The fabric is applied on the first surface of the flexible disc-shaped body. And the fabric is composed of woven aramid based fibers.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: January 7, 2020
    Assignee: Ingersoll-Rand Company
    Inventors: Mark Anthony Ezzo, Richard Kenneth Bean
  • Patent number: 10526767
    Abstract: Provided is a construction machine allowing regeneration of a return hydraulic fluid at the time of both a boom raising operation and a boom lowering operation with a small number of valves, making it possible to secure a satisfactory operability at the time of both the boom raising operation and the boom lowering operation.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: January 7, 2020
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Seiji Hijikata, Kouji Ishikawa, Shinya Imura
  • Patent number: 10519911
    Abstract: A fuel pump for an internal combustion engine is provided comprising a barrel including a central bore having a longitudinal axis, a plunger disposed partially in the central bore and movable along the longitudinal axis, a spring retainer, a first coil spring having a proximal end in contact with a first section of the barrel and a distal end in contact with the spring retainer to urge the spring retainer into engagement with a tappet assembly, an extender element coupled to the plunger, and a second coil spring having a proximal end in contact with a second section of the barrel and a distal end in contact with the extender element to urge the plunger toward the spring retainer, wherein the extender element includes a counter-bore to couple the extender element to the plunger.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: December 31, 2019
    Assignee: Cummins Inc.
    Inventors: Anthony A. Shaull, Lester L. Peters, Brian M. Watson, Roberto M. Munoz
  • Patent number: 10514050
    Abstract: A double-acting hydraulic cylinder has a first cylinder housing and a piston guided in the first cylinder housing, wherein a first pressure chamber and a second pressure chamber are provided in the first cylinder housing and are additionally separated from one another by the piston. A first connector serves to feed a hydraulic liquid to the first pressure chamber, and a second connector serves to feed the hydraulic liquid to the second pressure chamber. A second cylinder housing surrounds the first cylinder housing at least in one section. The first connector and the second connector may be arranged at an end of the double-acting hydraulic cylinder which faces away from the second pressure chamber. The second pressure chamber may be loaded with the hydraulic liquid via the section in which the second cylinder housing surrounds the first cylinder housing.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: December 24, 2019
    Assignee: MAQUET GMBH
    Inventor: Rolf Revenus
  • Patent number: 10502317
    Abstract: A hydraulic system according to the present invention includes a rotational shaft, a hydraulic rotor supported by the rotational shaft so as to be incapable of relative rotation, an output adjuster varying a volume of the hydraulic rotor, a control shaft tilting the output adjuster, a drive motor operating the control shaft around the axis, a drive shaft disposed on a reference axis same as the axis of the control shaft and operably driven around the axis by the drive motor, a deceleration mechanism decelerating rotary power input from the drive shaft and outputs the decelerated rotary power toward the control shaft, and a housing accommodating the hydraulic rotor, the output adjuster, and the deceleration mechanism, wherein the deceleration mechanism has a hypocycloid-type deceleration mechanism disposed on the reference axis.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: December 10, 2019
    Assignee: KANZAKI KOKYUKOKI MFG. CO., LTD.
    Inventors: Kengo Sasahara, Hiroaki Hashima, Hajimu Imanaka, Hiroshi Sugimoto
  • Patent number: 10502242
    Abstract: A hydraulic cylinder includes a cylinder having axially spaced-apart first and second bores, and a piston having a piston rod and arranged in the cylinder for movement between two end positions and dividing the cylinder into a piston side and a piston-rod side. A hydraulic pump pumps hydraulic oil into the piston side to move the piston from one end position toward the other end position while hydraulic fluid is discharged from the piston-rod side via the first bore and a first outlet line. A throttling device is operably connected to the cylinder to throttle a flow of the hydraulic fluid as the piston moves past and seals the first bore so that hydraulic fluid is discharged via the second bore, thereby reducing a delivery amount of the hydraulic oil and thereby braking and damping a movement of the piston toward the other one of the end positions.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: December 10, 2019
    Assignee: KOMATSU MINING GERMANY GMBH
    Inventors: Henry Schwarz, Christian Hess, Oliver Martens
  • Patent number: 10495220
    Abstract: A hydraulic control system includes a variable displacement hydraulic pump, the pump having an inlet for receiving fluid, an outlet for discharging fluid under pressure, and a pump displacement input, a hydraulic motor having an inlet and an outlet a fluid circuit including a supply conduit for conducting fluid discharged by the pump to the motor and a return conduit for returning fluid discharged by the motor to the pump, a pump displacement control cooperating with the pump displacement input in order to vary a displacement of the pump, a control circuit in communication with the pump displacement control for controlling the pump output such that the motor is driven at a constant rotational speed and at least two valves controlling a rotational speed of the motor, wherein one of the valves provides coarser flow control resolution and another of the valves provides finer flow control resolution.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: December 3, 2019
    Assignee: UUSI, LLC
    Inventors: Mario Boisvert, Curtis Lizotte, Scott Jones, John Washeleski, Gary Terrill
  • Patent number: 10487809
    Abstract: The invention relates to an autonomous device (10) for storing and releasing energy in order to power a piece of electrical equipment (12), in particular a piece of electrical equipment (12) of an aircraft, characterised in that said device comprises: a first means (16), configured to transform a variation in the surrounding pressure (P) to which the device (10) is subject into mechanical energy, at least one second means (20, 22), configured to mechanically store said mechanical energy by transforming same into the form of mechanical potential energy, a third means (24), configured to control the release of the mechanical potential energy contained in said second means (20, 22) and transform same into restored mechanical energy, a fourth means (28), configured to transform the restored mechanical energy into electrical energy suitable for powering said piece of electrical equipment (12).
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: November 26, 2019
    Assignee: SAFRAN AIRCRAFTS ENGINES
    Inventors: Francois Prost, William Bense
  • Patent number: 10487825
    Abstract: An articulated coupling is provided for a piston sealing device for a piston which includes a fixed skirt and a sliding skirt interconnected by a mechanical inter-skirt connection for axially compressing a continuous extensible segment under the action of a sliding skirt spring, the coupling replacing, on the one hand, the fixed skirt by a ball-joint skirt and providing, on the other hand, a troncospherical piston end which cooperates with a skirt troncospherical bearing surface provided on the ball joint skirt while an articulation unit interposed between the inter-skirt mechanical connection and the piston and/or between the connection and the sliding skirt.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: November 26, 2019
    Inventor: Vianney Rabhi
  • Patent number: 10480546
    Abstract: A piston rod and a rod cover which constitute this hydraulic cylinder are configured from aluminum or an aluminum alloy. An alumite coating film is formed on at least a part of the inner wall surface of the rod cover that constitutes a rod insertion hole, and a diamond-like carbon coating film is formed on the outer wall surface of the piston rod, said diamond-like carbon coating film being in sliding contact with the alumite coating film.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: November 19, 2019
    Assignee: SMC CORPORATION
    Inventors: Hiroyuki Okuhira, Kenji Imai, Tatsunori Yanase