公开(公告)号：US10670052B2

公开(公告)日：2020-06-02

申请号：US16066701

申请日：2017-02-01

申请人： SMS GROUP GMBH

发明人： Hermann-Josef Klingen ,  Uwe Muschalik ,  Ekhard Siemer ,  Karl Herrmann Claasen ,  Valentin Gala Losada ,  Andreas Wershofen-Crombach

IPC分类号： F15B13/02 ,  F15B15/14 ,  F15B15/20 ,  F15B11/22

摘要： A double-rod ram (1), preferably for an extruder, comprising an outer cylinder (10), an inner cylinder (20) installed therein and arranged concentrically therewith, a double-acting work piston (41) provided in the inner cylinder to be displaceable and a bypass device (50) with at least one bypass valve (52), wherein the work piston (41) divides the inner cylinder (20) into two compartments (42) and can be loaded with a hydraulic fluid from both compartments (42), wherein the bypass device (50) is so arranged that in a bypass position of the bypass valve (52) a fluid connection between the two compartments (42) is formed by a direct connection, preferably at least one bypass line, and in a work position of the bypass valve (52) no such fluid connection is present.

公开(公告)号：US10605276B2

公开(公告)日：2020-03-31

申请号：US15573307

申请日：2016-05-12

申请人： KONGSBERG AUTOMOTIVE AS

发明人： Bjørn Iverson ,  Steffen Johnsen ,  Kent Häll

IPC分类号： F15B15/20 ,  F15B15/14

摘要： A position dependent valve device (10) for a control cylinder (12) includes at least one channel (24) formed in one of a wall of a cylinder housing (14) of the control cylinder (12) and a wall of a internal piston (20) disposed in the cylinder housing (14) and a seal (26) including a flexible member adapted to be disposed in a groove in the other one of the wall of the cylinder housing (14) and the wall of the piston (20), the seal (26) cooperating with the at least one channel (24) when the piston (20) is in a defined position to allow airflow past the piston (20) and cooperating with one of the cylinder housing (14) and the piston (20) when the piston (20) is in a position outside the defined position to prevent airflow past the piston (20).

公开(公告)号：US20200025224A1

公开(公告)日：2020-01-23

申请号：US16334943

申请日：2017-09-04

申请人： SMC CORPORATION

发明人： Youji TAKAKUWA ,  Hiroyuki ASAHARA ,  Kengo MONDEN ,  Aki IWAMOTO ,  Naoki SHINJO ,  Kazutaka SOMEYA ,  Akihiro KAZAMA

IPC分类号： F15B15/20 ,  F15B11/064

摘要： A cylinder main body of a fluid pressure cylinder includes a switch valve, a check valve, and a flow path communicating a high pressure air supply source with a head side cylinder chamber and communicating an exhaust port with a rod side cylinder chamber when the switch valve is at a second position. Another flow path communicates the head side cylinder chamber with the rod side cylinder chamber and the exhaust port when the switch valve is at the first position.

公开(公告)号：US10538980B2

公开(公告)日：2020-01-21

申请号：US15546602

申请日：2015-02-26

申请人： Halliburton Energy Services, Inc.

发明人： Mikko Jaaskelainen

IPC分类号： E21B23/04 ,  F15B11/10 ,  F15B15/20 ,  F15B15/22 ,  F15B15/24

摘要： A single-use pressure-controlled actuator for downhole well tools or mechanisms is provided. The actuator is configured for control of activation/deactivation by agency of wellbore fluid pressure (e.g., pressure levels of drilling fluid or drilling mud in the wellbore). The actuator is further configured for hydraulic actuation by agency of the wellbore fluid. The actuator comprises a plunger displaceably mounted on a sealed cylinder body, with a non-reclosable frangible device closing off wellbore fluid access to an interior of the cylinder body. The frangible device is configured for automatic in response to exposure of wellbore fluid pressures exceeding a predetermined activation threshold. Failure of the frangible device causes exposure of the plunger to the wellbore fluid, resulting in actuated movement of the plunger by hydraulic action of the wellbore fluid.

公开(公告)号：US10512255B2

公开(公告)日：2019-12-24

申请号：US15730374

申请日：2017-10-11

申请人： William Moriarty

发明人： William Moriarty

IPC分类号： A01M1/10 ,  B25B7/12 ,  B25F5/00 ,  F15B15/18 ,  F15B15/20 ,  A01M1/02 ,  A01M1/04 ,  F15B15/08 ,  H01R43/042

摘要： A barrier device to prevent crawling arthropods such as bedbugs from accessing an item of furniture, said barrier device comprising a furniture riser, a deep fluid-filled moat, and a smooth wall around the moat.

公开(公告)号：US20190271338A1

公开(公告)日：2019-09-05

申请号：US16347017

申请日：2017-10-12

申请人： PistonPower APS

发明人： Svend Erik Thomsen ,  Jørgen P. Todsen ,  Tom Tychsen ,  Peter Zavadinka ,  Lubos Vokel ,  Juraj Hanusovsky ,  Jørgen Mads Clausen

IPC分类号： F15B15/20 ,  F15B3/00 ,  F15B15/14

摘要： A hydraulic actuator (1) is disclosed comprising a cylinder housing (2), a piston (5) with a piston rod (6) being displaceably arranged inside the cylinder housing (2) and a pressure amplifier (17) comprising an inlet section (18) with a pressure inlet port (20), an active section (19) with a high pressure outlet port (22), a low pressure chamber (32) and a high pressure chamber (38a). It is an objective of the invention to provide a hydraulic actuator (1) with a modular pressure amplifier (17). To this end, the hydraulic actuator (1) comprises a cartridge pressure amplifier (10) comprising a sleeve (10a) being arranged at least partially inside the piston rod (6), and wherein the pressure amplifier (17) is stationarily arranged inside the sleeve (10a).

公开(公告)号：US10359062B2

公开(公告)日：2019-07-23

申请号：US15688775

申请日：2017-08-28

申请人： Precision Planting LLC

发明人： Jason Stoller ,  Kent Levy ,  Todd Swanson

IPC分类号： A01C5/06 ,  F15B15/20 ,  A01C7/20

摘要： A downforce controller for an agricultural implement having a double-acting hydraulic cylinder. The cylinder is configured to be coupled to an agricultural row unit and an agricultural toolbar for transmitting a net downforce between the agricultural toolbar and the agricultural row unit. A first pressure in a first chamber of the cylinder and a second pressure in a second chamber of the cylinder have counteracting effects on the net downforce. A manifold coupled to the cylinder is in fluid communication with the first chamber. A pressure control valve coupled to the manifold is in fluid communication with the manifold and the first chamber.

公开(公告)号：US10330004B2

公开(公告)日：2019-06-25

申请号：US15402085

申请日：2017-01-09

申请人： ECO Holding 1 GmbH

发明人： Alexander Mudra ,  Dietmar Schulze

IPC分类号： F02B75/04 ,  F15B15/02 ,  F15B15/20 ,  F16K11/07 ,  F16C7/06

摘要： A switch valve configured to control a hydraulic fluid flow, the switch valve including a capture element which is arranged in a valve housing and displaceable into a first switching position or a second switching position, wherein a first hydraulic connection is connected with a supply connection in the first switching position and a second hydraulic connection is connected with the supply connection in the second switching position, wherein at least two pass through bore holes are provided in the capture element and extend through the capture element, wherein a first pass through bore hole provides a fluid connection between the first hydraulic connection and the supply connection in the first switching position and a second pass through bore hole provides a fluid connection between the second hydraulic connection and the supply connection in the second switching position.

公开(公告)号：US20190120330A1

公开(公告)日：2019-04-25

申请号：US15846355

申请日：2017-12-19

申请人： BERNARD CONTROLS

发明人： Etienne BERNARD ,  Rémy LEPAN

IPC分类号： F16H3/62 ,  F15B15/20 ,  F16K31/53 ,  F15B13/04 ,  F15B13/08

摘要： An epicyclic gear train for a servomotor system includes a case, and, positioned in the case, a planet carrier carrying planet gears, a ring gear, and a sun gear. The epicyclic gear train includes a control for changing input and output speed ratio in response to an input applied from outside the case.

公开(公告)号：US20190120263A1

公开(公告)日：2019-04-25

申请号：US15793315

申请日：2017-10-25

申请人： Dresser LLC

发明人： Jonathan Fredric Cohen ,  Jagdish Gattu ,  Lei Lu ,  Anatoly Podpaly ,  Harold Randall Smart ,  Paul Talmage Tirrell

IPC分类号： F15B15/20 ,  F16K31/04 ,  F16K15/14 ,  F16K47/04 ,  G01D11/24 ,  G05D7/00 ,  F15B13/08

CPC分类号： F15B15/202 ,  F15B5/006 ,  F15B13/0882 ,  F15B20/00 ,  F15B21/085 ,  F15B2211/6336 ,  F15B2211/6346 ,  F15B2211/6656 ,  F15B2211/8616 ,  F15B2211/8855 ,  F16K15/148 ,  F16K31/046 ,  F16K47/04 ,  G01D11/24 ,  G05B2219/45006 ,  G05D7/005

摘要： A controller for a valve assembly that is configured to meet requirements for use in hazardous areas. These configurations may regulate flow of instrument air to a pneumatic actuator to operate a valve. The controller may comprise enclosures, including a first enclosure and a second enclosure, each having a peripheral wall forming an interior space, and circuitry comprising a barrier circuit disposed in the interior space of one of the enclosures that power limits digital signals that exits that enclosure. In one example, the peripheral wall of enclosures are configured to allow instrument air into the interior space of the first enclosure but to prevent instrument air from the interior space of the second enclosure.