子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 121 | SYSTEM FOR POSITIONING AN OPERATING CYLINDER, USE OF THE SYSTEM, AND MACHINE | US12299949 | 2007-05-04 | US20090218835A1 | 2009-09-03 | Erkki Sipila |
| In the positioning system for an operating cylinder (1), a valve or a set of valves (6; 10, 11) comprises means for allowing a free supply of hydraulic fluid from a pump fluid chamber (8) of a pump cylinder (7) into an operating fluid chamber (2) of the operating cylinder (1), for preventing the backflow of hydraulic fluid from the operating fluid chamber (2) into the pump fluid chamber (8) when the hydraulic fluid pressure on the control side (A) rises above a predetermined pressure limit, and for allowing a free back flow of hydraulic fluid from the operating fluid chamber (2) into the pump fluid chamber (8) when the hydraulic fluid pressure on the control side (A) goes below the predetermined pressure limit. An operating piston rod (3) follows closely the movement of a pump piston rod (9), and the valve or the set of valves (6; 10, 11) prevents pressure fluctuations from transmitting from the operating side (B) to the control side (A). The system can be used for instance in a hole-rotor-type barking machine (16) for positioning the operating cylinders of barking blades (17). The system can also be used for positioning the operating cylinders (1) operating the gripping jaws (19) of a hydraulic gripper (18) of a machine. Furthermore, the system can preferably be used for positioning the operating cylinders of pusher shafts, lift booms and articulated knuckle booms of a machine. | ||||||
| 122 | Valve arrangement for vibration decoupling, which can be connected between a master cylinder and a slave cylinder of a hydraulic force transmission system | US11412638 | 2006-04-27 | US07578378B2 | 2009-08-25 | Stefan Gebert; Matthias Kopp; Jochen Schneier; Oswald Müller |
| A valve arrangement for vibration decoupling has a housing, in which two valve bodies are accommodated, a first of which is biased by a spring in a reference direction towards a stop integral with the housing and has a through-path for fluid. The other housing is biased by a spring in an opposite direction towards a valve seat on the first valve body and lifts away from the latter in the event of a volume flow in the reference direction, so as to open the through-path for fluid. A further through-path for fluid is provided between the first valve body and the housing, wherein a further valve seat is formed on the stop integral with the housing, towards which further valve seat the first valve body is biased by a spring and lifts away from the valve seat in the event of a volume flow in the opposite direction. | ||||||
| 123 | RAM POSITION DETECTION METHOD, RAM DRIVE METHOD, RAM DRIVE DEVICE, AND PRESS MACHINE HAVING THE RAM DRIVE DEVICE | US11915798 | 2006-06-01 | US20090025577A1 | 2009-01-29 | Makoto Aoki; Hiroyuki Mizushima; Nobuaki Ariji; Shigeki Noguchi |
| A ram driving method including the steps of fixing one end of a large-diameter piston rod (5R) integral with a large-diameter piston (5P) reciprocably included in a large-diameter cylinder (5) attached integrally to a ram (3) to a fixing unit (9), connecting one end of a small-diameter piston rod (7R) integral with a small-diameter piston (7P) reciprocably included in a small-diameter cylinder (7) integral with the large-diameter cylinder to a moving member (17) moved by a motor driving, integrally moving the small-diameter cylinder and the small-diameter piston and communicating a first compartment (5A) and a second compartment (5B) of the large-diameter cylinder divided by the large-diameter piston with each other, moving the ram integrally with the small-diameter piston rod moved by the moving member, and communicating the small-diameter cylinder with the large-diameter cylinder, thereby moving the large-diameter cylinder with a strong force by a working fluid supplied from the small-diameter cylinder. | ||||||
| 124 | Actuators with diaphragm and methods of operating same | US11104670 | 2005-04-13 | US07267043B2 | 2007-09-11 | David D. Wright; James Vogeley; Edward T. Tanner |
| Actuator assemblies comprise an actuator element and two piezoelectric assemblies, with the two piezoelectric assemblies being configured and arranged for controlling movement of the actuator element. In some example implementations, the first piezoelectric assembly and the second piezoelectric assembly are constructed and arranged so that a temperature dependency of the first piezoelectric assembly is cancelled by the temperature dependency of the second piezoelectric assembly. In a first example embodiment, a first piezoelectric assembly comprises a first or main piezoelectric diaphragm connected to the actuator element for displacing the actuator element in response to displacement of the first piezoelectric diaphragm. The first piezoelectric diaphragm and the second piezoelectric diaphragm are fixedly mounted to a movable carriage. In second example embodiment, first variable reservoir having a first piezoelectric diaphragm contracts and a second variable reservoir having a second piezoelectric diaphragm expands during an extension movement of the actuator element, and vise versa during a withdrawal movement of the actuator element. | ||||||
| 125 | Control system for controlling a peripheral device mounted to a vehicle | US11634034 | 2006-12-05 | US20070144159A1 | 2007-06-28 | Donald Sjolin |
| A vehicular peripheral device control system includes a peripheral device, an input device, and a hydraulic control apparatus. The input device is coupled to the hydraulic control apparatus and when actuated generates an input to the hydraulic control apparatus. The peripheral device is coupled to the hydraulic control apparatus, which actuates the peripheral device in response to the input device generating the input to the hydraulic control apparatus. | ||||||
| 126 | Ram-based positioning system | US10499425 | 2002-12-19 | US20050121878A1 | 2005-06-09 | Gerald Muldoon |
| One aspect of the invention provides a positioning system comprising at least one master ram and respective slave ram, at least one travel stop and at least one pressure relief valve. The or each travel stop is arranged to restrict the travel of one or more slave piston when the system is misaligned, at least one pressure relief valve being arranged to vent excess pressure in the operating fluid arising as a result of such restriction. The positioning system is particularly suited for incorporation into a steering system, especially for an articulated vehicle. | ||||||
| 127 | Hydraulic and pneumatic operative diaphragm valve | US10466999 | 2003-07-21 | US20040094735A1 | 2004-05-20 | Young-Hoon Shin |
| Disclosed is a diaphragm valve. When a chamber is expanded by fluid supply into a pipe-shaped button, a valve stem is slightly moved upward by a rod and a shaft to open an outlet of an orifice. Fluid received in a space between a cap and a diaphragm and having a high pressure is discharged into an outlet-side space, whereby the diaphragm opens a guide conduit. When fluid is discharged from the pipe-shaped button, the diaphragm is moved toward the guide conduit, and the valve stem closes the outlet. The fluid in the inlet-side space has a high pressure, and the fluid in the space between the cap and diaphragm has a low pressure. The high pressure fluid flows toward the low pressure fluid through a pilot hole of the diaphragm. When fluid pressure balance is effected between the spaces, the diaphragm closes the guide conduit. | ||||||
| 128 | Electronically controlled hydraulic actuating system | US10069408 | 2002-02-26 | US06625982B2 | 2003-09-30 | Dominique Alain Van Den Bossche; Jean-Marc François Michel Ortega; Christophe Lionel René Casse |
| An electrically controlled hydraulic actuating system includes a servocontrol including a cylinder, a piston dividing the cylinder into two chambers each provided with a hydraulic connection port, a control valve connected to a hydraulic circuit. A two-way hydraulic pump is driven in rotation by an electric motor driven by power electronics. A switching device allows the connection ports of the chambers to be connected either to the control valve or the pump. The switching device connects the hydraulic connection ports both to the control valve and the pump, so as to allow the servocontrol to be supplied the sum of the hydraulic power delivered by the hydraulic circuit and the hydraulic power generated by the pump actuated by the electric motor. | ||||||
| 129 | Hydraulic actuating system | US09743057 | 2001-04-02 | US06588551B1 | 2003-07-08 | Martin Kammerer; Thomas Preuhs |
| A skate, such as a roller skate or inline skate, comprises a shoe, a chassis and rollers or wheels suspended in the chassis. The skate also includes a braking system for at least one of the rollers or wheels. The braking system comprises a braking element which engages the roller and includes at least one actuation element for acting on the braking element. The braking force of the braking system is obtainable at low rotational or rolling speed of the roller to be braked and is small and increases with increasing rotational or rolling speed of the roller to be braked. | ||||||
| 130 | Peristaltic pump | US09766213 | 2001-01-19 | US20020098098A1 | 2002-07-25 | John Miesner |
| A peristaltic pump with three coaxial cylindrical components; a high-modulus rod contained within a piezoelectric tube, which in turn is contained within a cylindrical pressure casing, which may the casing of a hydraulic cylinder. The casing is filled with ERF. The piezoelectric tube has a plurality of electrode bands attached to its outer surface and is coated on its interior with an electrically conductive material. The electrodes are voltage-activated to cause certain portions of the tube to expand and others to contract, resulting in peristaltic action. The applied voltage also causes the ERF to form a gel state both inside and outside of the piezoelectric tube. A second embodiment includes a second set of electrode bands added to the interior of the casing, and a third set of electrode bands is added to the outside of the high-modulus rod. A method of incorporating the peristaltic pump into the piston of a hydraulic cylinder thereby forming a self-contained electrically-powered hydraulic actuator. An improved power supply that switches the polarity of the electrodes in a stepped fashion by transferring the associated charge through an inductor and drawing lost energy from a voltage source. | ||||||
| 131 | Damping device for hydraulic adjustment devices in motor vehicles | US09255324 | 1999-02-23 | US06343541B1 | 2002-02-05 | Angelika Ebert; Wolfgang Grosspietsch |
| A damping device for installation in a hydraulic adjustment device such, for example, as for motor vehicle clutches. The hydraulic adjustment device has a cylinder that is either an input cylinder or actuator or an output cylinder. The input cylinder or actuator, which is connected to an operating pedal of the motor vehicle, is also connected to the output cylinder via a hydraulic line filled with fluid. The damping device opposes a throttle resistance to the flow of the fluid in both flow directions. The damping device comprises a disk having first and second spring washers on either side of the disk. The disk has passage openings, which are covered on the respective sides by one of the first and second spring washers. The damping device is installed in the hydraulic adjustment device to suppress disturbing vibrations acts as both a vibration filter and an operating speed limiter. In addition, a constant throttle resistance is maintained relative to the fluid at all ambient temperatures. | ||||||
| 132 | Hydro-mechanical force-transmission device | US09269159 | 1999-03-16 | US06324844B1 | 2001-12-04 | Jean-Pierre Gautier; Cedric Leboisne |
| A force transmission and amplification device for a brake system comprising a pedal (1) and an output rod (2) for transmitting by way of the output rod (2) an output force (F2) having a higher intensity than an input force (F1) applied to pedal (1). An input rod (3) is secured to the pedal (1) for supplying a primary piston (4) located in a first diameter (D1) of primary cylinder (5) to delimit a primary chamber (51) retaining a fluid. A second piston (6) secured to the output rod (2) is located in a second diameter (D2) of a second cylinder (7) to delimit a secondary chamber (71). The primary chamber (51) is connected to the secondary chamber (71) to immediately supply pressurized fluid which acts on the second piston (6) to develop the output force (F2). | ||||||
| 133 | Actuator for hydraulic tool holder | US196095 | 1998-11-19 | US6000687A | 1999-12-14 | William M. Andre |
| A hydrostatic holding device has a first actuator constructed to increase the pressure of a hydraulic fluid within a pressure chamber to urge a metal sleeve into firm engagement with a workpiece received in a hydrostatic sleeve and a second actuator constructed to relieve the high pressure within the system to permit the workpiece to be removed from the sleeve when desired. Preferably, the first and second actuators are separate cylinders each having pistons displaceable by separate actuating rods to conveniently achieve the increased pressure needed to firmly hold the workpiece and the bleeding or relieving of the pressure so that the workpiece can be removed from a holder. A check valve downstream of the first actuator prevents reverse flow of the hydraulic fluid from downstream of the check valve back into the first actuator and thereby permits the increased pressure to be maintained independently of the first actuator. A second valve adjacent the second actuator prevents the flow of hydraulic fluid from the pressure chamber to the second actuator until it is opened by the second actuator to permit such flow and thereby relieve the pressure in the pressure chamber and refill and recharge the first actuator. | ||||||
| 134 | Prefilled hydraulic actuator apparatus with separate reservoir and quick-connect between them | US492430 | 1990-03-06 | US5083433A | 1992-01-28 | Keith V. Leigh-Monstevens |
| A preassembled, prefilled hydraulic actuator apparatus for a motor vehicle clutch and adapted for connection to a non-integral fluid reservoir. The apparatus comprises a master cylinder having a supply inlet and a working pressure outlet, a slave cylinder having an inlet, a working pressure conduit interconnecting the outlet of the master cylinder and the inlet of the slave cylinder, and a low-pressure supply conduit for connection to a reservoir. In one embodiment, the supply conduit is connected at one end to the master cylinder inlet and the free end of the supply conduit is sealed by a bung partition, a piercing coupling is provided on the free end of the supply conduit, and the coupling is connected to an outlet fitting on a prefilled reservoir which may also serve as the hydraulic fluid source for the brake system of the vehicle. The coupling functions in the course of the connecting operation to pierce the bung partition sealing the free end of the supply conduit and to further pierce a bung partition in the outlet of the reservoir so that fluid communication is thereby established between the hydraulic actuating apparatus and the reservoir. Another embodiment is disclosed in which the supply conduit is connected at one end to the reservoir outlet with its other end sealed; another embodiment is disclosed in which two supply conduits are respectively connected to the reservoir outlet and the master cylinder inlet; and another embodiment is disclosed in which a quick-connect coupling replaces the piercing coupling. | ||||||
| 135 | Hydraulic muscle pump | US357806 | 1989-05-30 | US4962751A | 1990-10-16 | Allan I. Krauter |
| This invention comprises four hydraulic muscle pumps connected to four hydraulic dynamic muscles in hermetically sealed pairs to transfer tensive forces from a local to a remote location for use in actuating the articulation section of a borescope or endoscope. | ||||||
| 136 | US37624882 | 1982-05-10 | US4599860B1 | 1989-02-28 | ||
| 137 | Micromanipulator for inverted-design microscope | US869440 | 1986-06-02 | US4749270A | 1988-06-07 | Itaru Endo; Toshimi Hayasaka; Katsura Motomura; Yasuo Inoue; Eiichi Narishige; Shinji Yoneyama |
| A micromanipulator for an inverted design microscope comprises a needle carrier disposed between a stage and a condenser lens of the microscope for carrying a glass needle in the direction of an optical axis. It also includes a centering mechanism which causes a displacement of the glass needle in a plane orthogonal to the optical axis, a hydraulic drive mechanism disposed on the upper surface of the stage for supporting the needle carrier to cause a vertical movement of the glass needle carried by the carrier along the optical axis, and a hydraulic operator connected to the hydraulic drive mechanism through a hydraulic transmission tube. | ||||||
| 138 | Liquid pressure apparatus | US376248 | 1982-05-10 | US4599860A | 1986-07-15 | David Parsons |
| A method of shipping and installing a hydraulic system such as a motor vehicle clutch hydraulic release mechanism comprising a driver-operable hydraulic master cylinder, a hydraulic slave cylinder and a conduit connecting the outlet of the master cylinder to the inlet of the slave cylinder. Prior to shipment and installation on a motor vehicle, the hydraulic system is filled with hydraulic fluid and bled or purged of atmospheric air, and installation on a motor vehicle is therefore greatly simplified as the requirement of filling with hydraulic fluid and bleeding or purging the hydraulic system after installation is entirely eliminated. | ||||||
| 139 | Vented pneumatic foot controller | US320393 | 1981-11-12 | US4413214A | 1983-11-01 | Jack Brown |
| A speed controlling arrangement for an electric motor is provided with a pneumatic foot controller which includes a bulb that is opened to the atmosphere between operative periods to equalize pressure in both the bulb and a transducer, but is closed when foot pressure is applied to the bulb to actuate the transducer. | ||||||
| 140 | Hydraulic remote control device | US3668871D | 1970-07-13 | US3668871A | 1972-06-13 | BERNDT HANS; KREUZER HUBERT |
| A hydraulic remote control apparatus is provided for use in operating short-stroke valves located in the piston of an adjustment cylinder for adjustable back rests. The apparatus includes a pair of remotely located hydraulic chambers interconnected by means of a fluid-carrying conduit. A first hydraulic chamber is provided with a diaphragm and disk arrangement which spans the chamber to form fluid-tight operating and control compartments therein. A second hydraulic chamber has a smaller cross-section than the first chamber and is provided with a rolling elastomeric diaphragm so that the volume of the second hydraulic chamber can be reduced by displacement of the plunger in a manner sufficient to deflect the rolling diaphragm.
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