公开(公告)号：US11603297B1

公开(公告)日：2023-03-14

申请号：US17551155

申请日：2021-12-14

申请人： YUN KUAN ENTERPRISE CO.,LTD.

发明人： Wen-Che Chen

IPC分类号： B66F3/42 ,  B66F5/04 ,  B66F3/26

摘要： A clamp contains: a body, an actuation rod, and a slow descending device. The body includes a first support sheet, and the actuation rod includes a second support sheet. The body further includes a drive grip, a driven mechanism, and a limitation mechanism. The limitation mechanism has a first spring, multiple first fixing protrusions, and a release lever. The slow descending device includes a second spring, multiple second fixing protrusions, a guide element, and a micro-adjustment handle. The micro-adjustment handle has a pull lever and the second spring 31 surrounds around the actuation ro. The multiple second fixing protrusions accommodate the actuation rod and are pushed by the second spring. The micro-adjustment handle has a third spring and a control lever pushed by the third spring and contacting with the multiple second fixing protrusions.

公开(公告)号：US20220098014A1

公开(公告)日：2022-03-31

申请号：US17467476

申请日：2021-09-07

申请人： FUYANG TONGLI INDUSTRIAL CO., LTD.

发明人： Yufeng HE ,  Weixiang HE ,  Gang SUN

IPC分类号： B66F3/26

摘要： A jack with a double high-pressure structure is provided, including a base, a pump body installed on the base, an oil cylinder, an oil drain valve, and a safety valve. The base is provided with a low-pressure check valve and a high-pressure check valve A. It is characterized in that a high-pressure check valve B is also installed on the base. The present invention can improve the safety performance during use and prolong the service life.

公开(公告)号：US11085166B2

公开(公告)日：2021-08-10

申请号：US16856061

申请日：2020-04-23

申请人： WELEAD Infrastructure Engineering Technology (Zhengzhou), Ltd. ,  SAFEKEY Engineering Technology (Zhengzhou), Ltd.

发明人： Fuming Wang ,  Hongyuan Fang ,  Peng Zhao ,  Chengchao Guo ,  Yanhui Pan ,  Xianfeng Zhao ,  Guobin Qiao ,  Zhihui Jia ,  Hui Liu

IPC分类号： E02D31/00 ,  B09B1/00 ,  B66F3/26 ,  E02D15/02 ,  E02D19/16 ,  E02D3/046 ,  F15B15/16

摘要： A pressing-pulling device includes: a pressing-pulling bracket, wherein slotting oil cylinders are symmetrically and vertically mounted on the pressing-pulling bracket, and a piston rod of each of the slotting oil cylinders faces downwardly; a bottom end of the piston rod is connected to a connecting plate, and a through-hole is provided in a middle of the connecting plate; a continuous lifting mechanism is installed in a middle of the pressing-pulling bracket, and a slotting rod is vertically inserted into the continuous lifting mechanism; a lifting ring is installed at a top end of the slotting rod; a bottom end of the slotting rod extends downwardly through the through-hole to connect to a slotting cutter; a locking device is fixed on the connecting plate near the through-hole for fixing the slotting rod.

公开(公告)号：US20170081159A1

公开(公告)日：2017-03-23

申请号：US15363542

申请日：2016-11-29

申请人： Brookfield Hunter, Inc.

发明人： Lloyd L. Lautzenhiser ,  Wade Wolf

IPC分类号： B66F5/04 ,  B66F3/26 ,  B66F3/42

CPC分类号： B66F5/04 ,  B66F3/26 ,  B66F3/42 ,  B66F2700/057

摘要： A method of extending a jack including the steps of: first stage pumping by passing pressurized fluid at a first pressure and a first volume to a jack cylinder primarily by movement of a piston; and second stage pumping by passing pressurized fluid at a second pressure and a second volume to the jack cylinder primarily by movement of a rod connected to the piston.

公开(公告)号：US09528533B2

公开(公告)日：2016-12-27

申请号：US14250232

申请日：2014-04-10

申请人： HERRMANN AG

发明人： Johannes Herrmann

IPC分类号： F15B15/02 ,  B66F3/26 ,  B66F3/46 ,  B66F7/20

CPC分类号： F15B15/02 ,  B66F3/26 ,  B66F3/46 ,  B66F7/20

摘要： An apparatus for lifting motor vehicles includes a first lifting device which is movable in a vertical direction and which is suitable for supporting a first region of the motor vehicle to be lifted, and a second lifting device which is arranged at a distance from the first lifting device and which is suitable for supporting a second region of the motor vehicle to be lifted. A first supply line supplies an hydraulic medium to the first lifting device, and with a second supply line supplies an hydraulic medium to the second lifting device.

摘要翻译： 一种用于提升机动车辆的装置，包括：第一提升装置，该第一升降装置可在垂直方向上移动并且适于支撑待提升的机动车辆的第一区域;以及第二提升装置， 并且其适合于支撑待提升的机动车辆的第二区域。 第一供应管路将液压介质供应到第一提升​​装置，并且第二供应管路将液压介质供应到第二提升装置。

公开(公告)号：US4807514A

公开(公告)日：1989-02-28

申请号：US177675

申请日：1988-04-04

申请人： Claude A. Gartzmuller

发明人： Claude A. Gartzmuller

IPC分类号： B66F3/26 ,  F15B15/17 ,  F15B15/22 ,  H01H3/24 ,  H01H33/34

CPC分类号： F15B15/222 ,  H01H33/34

摘要： A differential hydraulic jack with a damping system for the control of electric circuit-breakers is provided with a floating ring which produces a damping action at the end of travel and is also provided with a damping extension stud which forms part of the jack piston and penetrates into the damping ring. No provision is made on the jack piston for any packing ring forming a seal with the jack cylinder. The damping ring carries two projecting lips constituting a double valve which forms a leak-tight seal with the bottom face of the jack piston and the internal face of the cylinder end. At the end of the travel of the piston, the damping ring forms a double sealing valve for shutting-off the supply/drain orifice of the jack.

摘要翻译： 具有用于控制电路断路器的阻尼系统的差动液压千斤顶设置有浮动环，其在行程结束时产生阻尼作用，并且还设置有阻尼延伸螺柱，其形成千斤顶活塞的一部分并且穿过 进入阻尼环。 任何填料环与千斤顶气瓶形成密封件的千斤顶活塞上都不设置。 阻尼环带有构成双阀的两个突出的唇缘，其与顶盖活塞的底面和气缸端的内表面形成密封密封。 在活塞结束时，阻尼环形成双重密封阀，用于关闭千斤顶的排/漏孔。

公开(公告)号：US4467702A

公开(公告)日：1984-08-28

申请号：US333389

申请日：1981-12-22

申请人： Peter E. Ellen

发明人： Peter E. Ellen

IPC分类号： B66F3/24 ,  B66F3/26 ,  B66F19/00 ,  F16J10/02 ,  F16J15/48 ,  F01B31/06

CPC分类号： B66F3/26 ,  F16J10/02 ,  F16J15/48 ,  Y10T29/49249 ,  Y10T29/49256 ,  Y10T29/4927 ,  Y10T29/5383

摘要： A hydraulic jack having a piston and a cylinder in which the piston has at its head a cavity the dimensions of the cavity and the constructional materials of the cylinder and the piston being selected so that hydraulic pressure applied within the cylinder acts to deform the cylinder wall and the parts of the piston defining the cavity in such a manner that, over the normal rate of operating pressures of the jack the clearance between the piston and the cylinder remains within the capacity of the sealing means arranged between the piston and the cylinder to provide an effective seal.

摘要翻译： 一种具有活塞和气缸的液压千斤顶，其中活塞在其头部具有空腔，空腔的尺寸和气缸和活塞的结构材料的尺寸被选择，使得施加在气缸内的液压作用使气缸壁变形 并且所述活塞的所述部分以这样的方式限定所述空腔，使得在所述千斤顶的正常工作压力下，所述活塞和所述气缸之间的间隙保持在设置在所述活塞和所述气缸之间的所述密封装置的容量内，以提供 有效印章。

公开(公告)号：US3999467A

公开(公告)日：1976-12-28

申请号：US612442

申请日：1975-09-11

申请人： Arne Engquist

发明人： Arne Engquist

IPC分类号： B66F3/26 ,  F16J1/02 ,  F16J1/08

CPC分类号： B66F3/26 ,  F16J1/02

摘要： A piston-cylinder assembly having a circumferential groove around the piston near the end of the piston facing the cylinder chamber, a cuff around the piston at a location more remote from said chamber from the groove, a guide ring mounted in the groove for slideably abutting the cylinder wall, the guide ring having a convex inner configuration and a generally cylindrical outer configuration.

摘要翻译： 一种活塞 - 气缸组件，其具有围绕活塞的靠近气缸室的端部附近的活塞的周向槽，在距离所述腔更远离凹槽的位置处的活塞周围的环绕，安装在凹槽中的可滑动地邻接的导向环 气缸壁，导向环具有凸形的内部构造和大致圆柱形的外部构造。

公开(公告)号：US2390241A

公开(公告)日：1945-12-04

申请号：US45610642

申请日：1942-08-24

申请人： DEMPSEY OSCAR E

发明人： DEMPSEY OSCAR E

IPC分类号： B66F3/26

CPC分类号： B66F3/26

公开(公告)号：US1759517A

公开(公告)日：1930-05-20

申请号：US30156428

申请日：1928-08-23

申请人： CHIPMAN MILLER HENRY ,  HARRY DAINTON EDGAR

发明人： CHIPMAN MILLER HENRY ,  HARRY DAINTON EDGAR

IPC分类号： B66F3/25 ,  B66F3/26

CPC分类号： B66F3/26 ,  B66F3/25