专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

61. 发明授权

US4002027A Multiple pump control system 失效
标题翻译：多泵控制系统
公开(公告)号：US4002027A
公开(公告)日：1977-01-11
申请号：US652532
申请日：1976-01-28
申请人： James M. Eley , Fred T. Smith
发明人： James M. Eley , Fred T. Smith
IPC分类号： F15B11/17 , F15B13/09
CPC分类号： F15B11/17 , F15B2211/20576 , F15B2211/275 , F15B2211/40515 , F15B2211/41563 , F15B2211/428 , F15B2211/45 , F15B2211/6055 , F15B2211/75 , Y10T137/2582 , Y10T137/2605
摘要： A control system for plural motor driven pumps is disclosed. The control system includes a control valve which provides for unloading one pump by diverting the flow of operating fluid from that pump back to reservoir whenever the flow through the valve or the load pressure exceeds a preselected level.
摘要翻译：公开了一种用于多个马达驱动泵的控制系统。控制系统包括一个控制阀，该控制阀通过将流过该阀的流量或负载压力超过预先设定的水平，将该泵的工作流体的流量从该泵转回到容器中来卸载一个泵。

62. 发明授权

US3922116A Reversing mechanism for double-action hydraulic oil well pump 失效
标题翻译：双作用液压油井泵的倒档机构
公开(公告)号：US3922116A
公开(公告)日：1975-11-25
申请号：US46085874
申请日：1974-04-15
申请人： DRESSER IND
发明人： PUGH TOBY SYDNEY
IPC分类号： F01L21/04 , F01L23/00 , F04B9/115 , F04B47/08 , F04B17/00 , F15B13/09
CPC分类号： F01L21/04 , F01L23/00 , F04B9/115 , F04B47/08
摘要： A valve system for controlling input and exhaust of power fluid to a dual action hydraulically actuated downhole pump utilizes a ported inner mandrel slidably mounted over the middle rod of the pump and actuated by the pump pistons, with a ported valve housing located annularly between the mandrel and the production tubing.
摘要翻译：用于控制功率流体输入和排出到双作用液压致动的井下泵的阀系统利用移动的内心轴，其可滑动地安装在泵的中杆上并由泵活塞致动，其中环形地位于心轴和生产管道。

63. 发明授权

US3733964A Fluid control system 失效
标题翻译：流体控制系统
公开(公告)号：US3733964A
公开(公告)日：1973-05-22
申请号：US3733964D
申请日：1971-08-25
申请人： WESTINGHOUSE AIR BRAKE CO
发明人： SCHANTZ R
IPC分类号： E02F3/65 , F15B11/20 , F15B11/16 , F15B13/09
CPC分类号： F15B11/20 , E02F3/6481 , E02F3/651
摘要： A fluid control system for an elevating scraper incorporating a master control valve for selectively directing fluid to a floor gate cylinder and an ejector gate cylinder, and a pilot sequence valve for sequentially operating said master control valve to assure that fluid will be initially directed to the floor gate cylinder and then subsequently to the ejector gate cylinder; there being a fluid line connecting the floor gate cylinder and the pilot sequence valve for passage of fluid to the latter after the floor gate has been fully extended.

64. 发明授权

US3590689A Vehicle central hydraulic system 失效
标题翻译： VEHICLE中央液压系统
公开(公告)号：US3590689A
公开(公告)日：1971-07-06
申请号：US3590689D
申请日：1969-11-26
申请人： GEN MOTORS CORP
发明人： BREWER LEE M , FREI WILLIAM R
IPC分类号： B62D5/07 , F15B13/09
CPC分类号： B62D5/07
摘要： A central hydraulic system combining the hydraulic power steering gear and a hydraulic power brake booster for operation by a common source of pressurized fluid is arranged to have a primary pump supply the inlet of an open center power steering control valve and have the inlet of the power brake booster open center valve draw from the outlet of the steering gear. In the event the steering gear is caused to engage the chassis limit stops and its control valve held fully actuated so that a condition of substantially reduced flow circulation is established therethrough, a low flow bypass valve delivers incoming pressure fluid from the pump directly to the power brake booster. A secondary electric motor-driven pump is arranged in the system to operate in the event of failure of the primary pump and directly supplies the power steering gear inlet with the low flow bypass valve again being subject to low flow conditions in the latter to directly supply the power brake booster.

65. 发明授权

US3540218A Hydraulic supply system with two pumping units 失效
标题翻译：具有两个泵浦单元的液压供应系统
公开(公告)号：US3540218A
公开(公告)日：1970-11-17
申请号：US3540218D
申请日：1969-05-12
申请人： GEN SIGNAL CORP
发明人： FINN JOSEPH F JR
IPC分类号： F15B11/17 , F15B13/09
CPC分类号： F15B11/17

66. 发明公开

EP0618371A2 Hydraulic system 失效
标题翻译： Hydraulikanlage。
公开(公告)号：EP0618371A2
公开(公告)日：1994-10-05
申请号：EP94302142.8
申请日：1994-03-24
申请人： JOHNSTON ENGINEERING LIMITED
发明人： Duthie, Anthony James
IPC分类号： F15B1/06 , F15B13/09
CPC分类号： F15B11/17 , F15B1/26 , F15B2211/20576 , F15B2211/40507 , F15B2211/41554 , F15B2211/61 , F15B2211/615 , F15B2211/71 , F15B2211/885 , Y10T137/86059 , Y10T137/86163
摘要： A hydraulic system 10 provides a positive supply of hydraulic fluid at a controlled pressure to plurality of pumps. The system comprises a fluid reservoir 15 having outlet means to supply fluid to an auxiliary pump 30. A pressure chamber 16 communicates with a reservoir 15 and has outlet means to supply fluid to a plurality of working pumps 11, 12, 13. An inlet manifold 18 is provided for receiving fluid returned from the working and auxiliary pumps.
摘要翻译：液压系统10以受控的压力向多个泵提供液压流体的正向供应。该系统包括具有用于将流体供应到辅助泵30的出口装置的流体储存器15.压力室16与储存器15连通并具有用于将流体供应到多个工作泵11,12,13的出口装置。入口歧管 18用于接收从工作泵和辅助泵返回的流体。

67. 发明授权

EP0358778B1 PILOT OPERATED CONTROL VALVE SYSTEM 失效
标题翻译： PILOT操作控制阀系统
公开(公告)号：EP0358778B1
公开(公告)日：1993-06-09
申请号：EP89902827.8
申请日：1989-02-28
申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO
发明人： KARAKAMA, Tadao , ISHIZAKI, Naoki , ODA, Yosuke
IPC分类号： F15B13/09 , F15B13/042 , F15B11/00 , F16K27/00
CPC分类号： F15B13/0842 , F15B13/0807 , F15B13/0892 , F15B13/0896 , F15B2013/006
摘要： A pilot operated valve device having a plurality of valves for controlling the operation of a hydraulic device such as a hydraulic cylinder, wherein the whole device is compactly formed such that a plurality of valves are mounted in small mounting space without causing them to be interfered by each other. The valve device is provided with an assist for simultaneous application of pressured oil from two hydraulic pumps through the same hydraulic circuit as required. The device comprises a cuboidal valve housing (10); first and second pump ports (11, 12) extending in parallel and horizontally in upper portions near two opposite sides in the valve housing and communicating with a first hydraulic pump; a tank port (13) extending horizontally through the center in the valve housing and communicating with the drain tank; a pilot tank port (25) and an auxiliary pilot tank port that run over and under the above tank port in parallel therewith and in a horizontal direction in the valve housing; first and second auxiliary pump ports (81, 82) extending in parallel and horizontally in lower portions near two opposite sides in the valve housing and communicating with a second hydraulic pump; a plurality of valves (19, 20, 23, 24, 88, 98) inserted in the valve holes formed in the valve housing to open or close these ports; and a plurality of pilot valves (31, 32, 87, 97) for controlling the supply of pressure oil for pilot pressure to these valves.

68. 发明授权

EP0279356B1 Hydraulic system for a construction machine 失效
标题翻译：建筑机械液压系统
公开(公告)号：EP0279356B1
公开(公告)日：1991-05-22
申请号：EP88102009.3
申请日：1988-02-11
申请人： DEERE & COMPANY
发明人： Johnson, Steven Harold , Williams, Lary Lynn
IPC分类号： E02F3/32 , E02F3/22 , F15B11/16 , F15B13/09
CPC分类号： F15B11/17 , E02F9/2232 , E02F9/2239 , E02F9/2292 , E02F9/2296 , F15B2211/20553 , F15B2211/20576 , F15B2211/30505 , F15B2211/3111 , F15B2211/351 , F15B2211/353 , F15B2211/6313 , F15B2211/65 , F15B2211/6651 , F15B2211/7142 , F15B2211/715 , F15B2211/78

69. 发明公开

EP0114650A1 Variably charged hydraulic circuit 失效
标题翻译：液压回路具有可变负载。
公开(公告)号：EP0114650A1
公开(公告)日：1984-08-01
申请号：EP84100460.9
申请日：1984-01-17
申请人： GENERAL SIGNAL CORPORATION
发明人： Becker, Lanson
IPC分类号： F15B11/16 , F15B13/09 , B62D5/06
CPC分类号： F15B11/17 , F15B2211/20538 , F15B2211/20546 , F15B2211/20576 , F15B2211/212 , F15B2211/30505 , F15B2211/40507 , F15B2211/40515 , F15B2211/45 , F15B2211/455 , F15B2211/7142 , F15B2211/781
摘要： A hydraulic fluid circuit system is provided for use in a vehicle and having a priority (30) and a second fluid circuit (40) therein. A variable displacement pump (10) is the primary fluid source for the priority circuit (30), and a fixed displacement pump (20) is the primary fluid source for the second fluid circuit (40). A demand valve (50) responsive to differential fluid pressure between the priority circuit (30) and the output of the variable displacement pump (10) selectively switches increasing amounts of output from the fixed displacement pump (20) into the priority circuit (30) in proportion to the output of the variable displacement pump (10). The demand valve (50) includes a three positioned spool valve. The priority circuit (30) may include a hydraulic steering system, and the second fluid circuit (40) may include an implement or accessory circuit.

70. 发明公开

EP0092315A3 Hydraulic pump control 失效
标题翻译：液压泵控制
公开(公告)号：EP0092315A3
公开(公告)日：1984-07-18
申请号：EP83301402
申请日：1983-03-15
申请人： AUTOMOTIVE PRODUCTS PUBLIC LIMITED COMPANY
发明人： Young, Alastair John , Chettle, Adrian John
IPC分类号： F15B13/09
CPC分类号： F15B11/17 , F15B2211/20584 , F15B2211/25 , F15B2211/30505 , F15B2211/428 , F15B2211/45 , F15B2211/455 , F15B2211/76
摘要： A fluid pressure supply system incorporates two pumping units P1 and P2 for supplying fluid under pressure to a load 13. Pump P1 supplies the load continuously. Pump P2 is also connected to the load 13 through a load valve 15 when pressure in the load is low but is connected to drain through the load valve when load pressure is high. A pressure relief valve 14 controls the load valve 15 by a connection from port 22 to port 28 which applies system pressure to the load valve at low pressure and drain pressure via port 23 at higher pressures in response to relief valve spool movement. The high control pressure moves load valve spool 25 to connect its inlet port 29 to load 13 through port 33. When system pressure is high and control pressure is low, inlet 29 is connected to drain port 31 so that pump P2 is off-load in that it is pumping direct to drain.
摘要翻译：流体压力供应系统包括两个泵送单元P1和P2，用于将压力下的流体供应到负载13.泵P1连续地供应负载。当负载压力低时，泵P2也通过负载阀15连接到负载13，但当负载压力高时，泵P2通过负载阀连接到排水管。减压阀14通过从端口22到端口28的连接来控制负载阀15，该连接器响应于安全阀阀芯移动而在较高压力下通过端口23在低压和排出压力下向负载阀施加系统压力。高控制压力移动负载阀芯25，通过端口33将其入口29连接到负载13.当系统压力高并且控制压力低时，入口29连接到排放口31，使得泵P2处于卸载状态它直接泵送到排水。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式