| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 141 | Hydraulic circuit architecture | US10483498 | 2004-01-12 | US20040195909A1 | 2004-10-07 | Walid Hamzeh; Jerome Libourel |
| The invention relates to an architecture for a hydraulic circuit associated with actuators (100), such as actuators for airplane brakes, the architecture comprising a main hydraulic circuit (C) having hydraulic components (4, 5 101, 6) and adapted to convey hydraulic fluid pressurized by at least one pressure generator (2) associated with a main supply (1) to the actuators (100). According to the invention, the architecture includes an emergency system comprising an auxiliary supply (8) permanently fed by a return circuit (R) collecting the returns from all of the hydraulic components (4, 5, 101, 6), the auxiliary supply (8) being connected to the main supply (1) via a relief valve (9), said emergency system further comprising an electrically driven pump unit (10) arranged to take fluid from the auxiliary supply (8) and to inject it into the main circuit (C) downstream from a general check valve (3). | ||||||
| 142 | Transfer valve system | US10405720 | 2003-04-02 | US20040194458A1 | 2004-10-07 | Boris K. Kogan; William F. Lange |
| A hydraulic transfer valve system has a main valve selectively placing one of a primary and secondary hydraulic system in communication with a hydraulic load. A pilot valve provides a toggling action between the primary and secondary systems with respect to pressure changes in such systems. | ||||||
| 143 | Industrial truck with charging function | US10391519 | 2003-03-18 | US20040017176A1 | 2004-01-29 | Georg Fromme; Ansgar Bergmann; Marc Wede |
| A battery-operated vehicle, in particular to an industrial truck, includes an electronic control unit (2) and an on-board charging function. Instead of a separate charging unit, the invention teaches that the control unit (2) also regulates the charging function. | ||||||
| 144 | Switching device for a machine | US10019084 | 2001-12-26 | US06679281B1 | 2004-01-20 | Gerd Anton Thiry; Harald Bär; Martin Schaus |
| A switching device for a machine, especially a digger, has at least one supply connection and one useful connection in addition to at least one hydraulic accumulator. An on-off valve is arranged between the supply connection and the useful connection, and separates the supply connection at least partially from the useful connection in one of its switching positions, in addition to ensuring that the hydraulic accumulator is charged on the fluid side via the supply connection. In another switching position, the supply connection is connected to the useful connection. A substantial improvement relative to conventional switching devices is attained by being able to guarantee an emergency function before the machine is used to perform work. | ||||||
| 145 | Electronically controlled hydraulic system for lowering a boom in an emergency | US09970761 | 2001-10-04 | US06647718B2 | 2003-11-18 | Dwight B. Stephenson |
| An industrial lift truck has a boom that is raised and lowered by a first hydraulic actuator and a load carrier that is pivoted with respect to the boom by a second hydraulic actuator. In the event that the supply of hydraulic fluid for powering the actuators fails, the boom may be lowered by gravity by draining fluid from the first hydraulic actuator. To prevent a load from sliding off the load carrier as the boom descends, the load carrier is pivoted to maintain a substantially constant angular relationship to the ground. This is accomplished by selectively conveying fluid drained under pressure from the first hydraulic actuator into the second hydraulic actuator. Changes in the position of the boom are sensed and, in response, the flow of fluid into the second hydraulic actuator is controlled to produce corresponding changes in the load carrier position. | ||||||
| 146 | Hydraulic system architecture for controlling steering | US10360639 | 2003-02-10 | US20030188529A1 | 2003-10-09 | Olivier Collet; Emmanuel Dorget; Claire Patrigeon; Daniel Bucheton |
| The invention relates to a hydraulic steering system architecture comprising at least one steering control actuator having chambers connected to the outlets of a directional-control valve, an accumulator, and an electrically-driven pump unit associated with an emergency supply. The hydraulic system also comprises a general selector arranged, in a normal mode of operation, to connect the feed port of the directional-control valve to a pressure-generator device and the return port of the directional-control valve to a main supply associated with the pressure-generator device, while also ensuring that the emergency supply is filled, and in an alternate mode of operation, to connect the feed port of the directional-control valve to the accumulator. | ||||||
| 147 | Energy reservoir for hydraulic systems | US10093083 | 2002-03-07 | US20030005690A1 | 2003-01-09 | Ottmar Neuf; Rainer Bavendiek; Recep Macit |
| The invention relates to a device and method to provide energy for hydraulic systems. The device includes at least one gas generation cartridge (2) and a device (5) for the activation of a gas generation. Gas pressure vessels (2) or pyrotechnic gas generation cartridges (2) can be used advantageously as gas generation cartridges (2). The method of the invention includes activating a gas generation when the pressure in a hydraulic circuit drops. | ||||||
| 148 | Device for preventing unintentional restarting | US10173223 | 2002-06-14 | US20020189249A1 | 2002-12-19 | Ronny-Michael Priese |
| A device for preventing the unintentional restarting of motors or machines is proposed, it being possible to control the supply of energy to the motor or to the machine by means of a control valve with a mechanically adjustable control element and it being possible to connect the control valve non-detachably to the motor or to the machine, the energy for the motor being generated by means of compressed air, and in that a pneumatic piston, to which the primary air pressure prevailing upstream of the motor and upstream of the control valve can be applied, being arranged as a restarting inhibitor between the control valve and the motor, and in that, in order to apply the primary air pressure, a connecting line being arranged between the motor and the piston. | ||||||
| 149 | Hydraulic actuating system with electric control | US10069408 | 2002-02-26 | US20020121087A1 | 2002-09-05 | Dominique Alain Van Den Bossche; Jean-Marc Francois Michel Ortega; Christophe Lionel Rene Casse |
| The invention concerns a hydraulic circuit (17) and a control valve (18) dimensioned to be capable of providing the greater part the control surface (3) actuating, which requires less power than the system maximum performances Moreover, a bi-directional hydraulic pump (23), driven by an electric motor (24), can supply backup power which added to said circuit (17) power can ensure said maximum performances. | ||||||
| 150 | Hydraulic actuating arrangement | US09711874 | 2000-11-14 | US06418715B1 | 2002-07-16 | Gerhard Huber |
| The two working chambers (2, 2′, 3) of a working cylinder (1) of a hydraulic actuation arrangement may be directly connected with one another via a switchable dual-position valve (11), if necessary, whereby a resistance-free manual displacement of the components to be actuated is possible to a large extent—regardless of the working cylinder (1) that is driven by the hydraulic circuit (6) or also in case of a malfunctioning or a turned-off pressure medium source. | ||||||
| 151 | Pilot solenoid control valve with an emergency operator | US09653601 | 2000-08-31 | US06398182B1 | 2002-06-04 | Dwight B Stephenson |
| A discharge valve is provided to open an electrically controlled pilot valve in emergency situations such as during an electrical or hydraulic failure. The discharge valve has a poppet that operates in response to a pressurized control signal, which may be produced by a hand operated pump. When the poppet opens in response to the control signal, a path is established for fluid to flow from a control chamber of the pilot valve, thereby opening the latter valve. | ||||||
| 152 | Hydraulically operated overhead door | US09873481 | 2001-06-04 | US20020029524A1 | 2002-03-14 | Douglas J. Kerkvliet |
| An overhead door assembly in which the door assembly has a vertical closed position and a horizontal opened position, the door assembly including a frame having a horizontal support member and first and second vertical members fixedly mounted to either end of the horizontal member, the vertical members are fixedly mounted to the ground. A one piece door member includes top and bottom horizontal ends and first and second vertical sides and is pivotally mounted to the horizontal member of the frame with the door member being movable from a closed position to an opened position about a pivot point. A hydraulic cylinder is pivotally mounted on a portion of either of the first or second vertical members and the second end of the hydraulic cylinder is pivotally mounted to the door member. The hydraulic cylinder includes a ram movably disposed within the cylinder and transmits an opening and closing force to the door member. | ||||||
| 153 | Line vent arrangement for electro-hydraulic circuit | US09607049 | 2000-06-30 | US06318234B1 | 2001-11-20 | Edward W. Mate |
| A line vent arrangement is provided to selectively vent pressurized fluid from an actuator in an electro-hydraulic system when an engine of a machine has been shut down. This is accomplished by providing a pressure storage arrangement in parallel with a source of pressurized pilot fluid and an electrically controlled valve that is movable to a position to connect the pressure storage arrangement to the electro-hydraulic directional control valve when the engine of the machine has been shut down. | ||||||
| 154 | Actuation arrangement for displaceable components on vehicles | US09783137 | 2001-02-15 | US20010015128A1 | 2001-08-23 | Klaus Stolle; Gerhard Huber |
| An actuation arrangement for displaced components on vehicles, particularly trunk lids, convertible tops, engine hoods or the like, includes at least one supply line for the pressurized medium and one essentially non-pressure connection line to a reservoir for the working medium or a pump arrangement being functionally of the same kind, at least one preferably hydraulic working cylinder, and at least one control valve controlling the supply of a working medium in at least one working chamber of the working cylinder. To make possible a hydraulic movement of the vehicle component as well as a purely manual actuation in any direction without detrimental influence to a subsequent actuation or other measures, except for the on- and off switching of the energy supply of the hydraulic system, the control valve (4) may be electrically operated, at least one of the working chambers of at least one working cylinder (1) may be connected alternatively via a control valve (4) with a supply line (2), or the working chamber may be connected to a connection line while being without electric power, and that an overflow line (7) is provided between the working chambers of the working cylinders (1) whereby the overflow line (7) allows counter-movements of the displaced component, and whereby an open non-energized valve (8) is inserted in the overflow line (7). | ||||||
| 155 | Arrangement for hydraulic actuation of a movable component on vehicles | US09785566 | 2001-02-20 | US20010015127A1 | 2001-08-23 | Jurgen Osterried; Peter Schmied |
| An arrangement for hydraulic actuation of a movable component on vehicles, particularly a vehicle top, trunk lid, a cover or the like, includes at least one double-action working cylinder (1) whose working chambers are connected to a pressure source (5) via a pressure line (4) or whose working chambers are at least temporarily connectable thereto through a switching valve (11). To make possible an automatic emergency operation of the normally hydraulic operated vehicle component in a simple and secure manner during failure of the pressure source, and in spite of the small available space and the mounting site with its difficult accessibility, a check valve (16) is inserted into the pressure line (4) blocking in the direction of the pressure source (5) and a pressure relief line (17) originates at a location between the check valve (16) and the switching valve arrangement for the working cylinder (1, 11) whereby a shut-off element (19) is inserted in the pressure relief line that opens when the pressure of the pressure source drops. | ||||||
| 156 | Manually operated emergency control actuation device | US09297049 | 1999-04-28 | US06220142B1 | 2001-04-24 | Stefan Rothhaar |
| An actuation device for emergency operation of a hydraulically controlled actuator includes a housing with a fluid container connected to the actuator via a connection point and to a hydraulic supply circuit of the actuator via another connection point. A separating piston is guided lengthwise inside the fluid container via a manually operated adjusting device. The piston has a control device for a through-opening joining the connection points to each other. The actuation device provides an economical and simple way of reliably controlling and monitoring the hydraulically controlled actuator in case of malfunction by an adjustment screw screwed or unscrewed on the housing. The screwing path is chosen such that the cooperating separating piston can be displaced between two end positions. The through-opening of the separating piston has a check valve which is opened at one end position and is closed at the other. | ||||||
| 157 | Compact power tilt and trim unit for marine drive | US228436 | 1999-01-11 | US6139380A | 2000-10-31 | Yoshikatsu Uematsu |
| A tilt and trim adjustment mechanism includes an improved arrangement of a powering unit in order to reduce the size of the assembly, including the size of the hydraulic motor used to raise and lower the outboard motor. The powering unit is mounted on a lower end of the hydraulic motor so that the brackets of an associated coupling assembly (i.e., swivel and clamping brackets) do not have to be widened in order to accommodate the tilt and trim adjustment mechanism. In addition, the hydraulic motor can be arranged to position the motor at the center of the assembly. By having the hydraulic motor act at the center of gravity of the assembly, a smaller hydraulic motor can be used. In addition, the tilt and trim adjustment system includes an improved manual override valve that includes a push button actuator. No tools are required to open the valve. In addition, the button is conveniently located on the powering assembly to be accessible for manually lowering the outboard motor. | ||||||
| 158 | Apparatus for diagnosing failure of hydraulic pump for work machine | US51440 | 1998-09-03 | US6055851A | 2000-05-02 | Yasuo Tanaka; Masami Ochiai; Takashi Yagyu; Akira Hashimoto; Yoshinori Furuno; Yutaka Watanabe; Yukihiko Sugiyama |
| This invention relates to a fault diagnosis system for hydraulic pumps in a work vehicle, which is economical and permits sure identification of one or more trouble-developed ones of the hydraulic pumps.Pressure sensors 61-64 are arranged on pressurized fluid lines 30,40, which extend to a tank T from points immediately out of center bypasses of flow control valves 21,231-234,451-454,26 communicated to hydraulic pumps 1-6. Solenoid-operated directional control valves 51-56 are interposed in input circuits of individual regulators 11-16 so that, upon excitation, a pressure of a pilot pump 7 is introduced into the regulators 11-16. When all the flow control valves are brought into neutral positions thereof and a determination is instructed through a switch 80, one of the solenoid-operated directional control valves is excited by a signal from a processor 70 so that pressurized fluid is delivered at a maximum flow rate from the corresponding hydraulic pump. A detection value of the corresponding pressure sensor at this time is translated into a flow rate, which is then stored. These procedures are performed with respect to the individual hydraulic pumps successively. Based on a flow rate obtained in every determination, a fault diagnosis of the corresponding particular hydraulic pump is performed. | ||||||
| 159 | Fail-safe transfer valve | US575567 | 1995-12-20 | US5784884A | 1998-07-28 | Wayne M. Poerio; Matthias Eder |
| The main control servo valve responsive to electrical input signals modulates a power piston to position a throttle valve that varies the flow of fluid during normal operation. A transfer servo valve responsive to the pressure in the servo system moves hard over upon sensing a low pressure signal that is normally lower than the system's pressure to cause the power piston to position the throttle valve closed. In the preferred embodiment the system throttles compressor air of a gas turbine engine to provide an anti-icing function and activates the transfer servo valve upon a hard over malfunction. | ||||||
| 160 | Aircraft split hydraulic system | US196665 | 1980-10-14 | US4428196A | 1984-01-31 | Wilfred E. Boehringer |
| A hydraulic system having two pumps, typically driven by two independent prime movers, a primary and secondary reservoir and associated valving to permit the system to run as one system or two independent systems, all for the purpose of redundancy and safety. The system senses fluid level in the primary reservoir and actuates the valves to establish two independent hydraulic systems, each with its own reservoir, when the fluid level drops below a predetermined level. The system is particularly advantageous in twin-engine aircraft where three hydraulic systems are employed, one off of each engine, and the third system uses two pumps, one driven by each engine. | ||||||
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