EP0735275A3 - Snap-in locking device - Google Patents

Snap-in locking device Download PDF

Info

Publication number
EP0735275A3
EP0735275A3 EP96100338A EP96100338A EP0735275A3 EP 0735275 A3 EP0735275 A3 EP 0735275A3 EP 96100338 A EP96100338 A EP 96100338A EP 96100338 A EP96100338 A EP 96100338A EP 0735275 A3 EP0735275 A3 EP 0735275A3
Authority
EP
European Patent Office
Prior art keywords
openable
nonreturn
switching device
operating apparatus
check valves
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96100338A
Other languages
German (de)
French (fr)
Other versions
EP0735275A2 (en
EP0735275B1 (en
Inventor
Rüdiger Dipl.-Ing. Jung
Harald Dipl.-Ing. Bär
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hydac Fluidtechnik GmbH
Original Assignee
Flutec Fluidtechnische Geraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Flutec Fluidtechnische Geraete GmbH filed Critical Flutec Fluidtechnische Geraete GmbH
Publication of EP0735275A2 publication Critical patent/EP0735275A2/en
Publication of EP0735275A3 publication Critical patent/EP0735275A3/en
Application granted granted Critical
Publication of EP0735275B1 publication Critical patent/EP0735275B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/01—Locking-valves or other detent i.e. load-holding devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Catching Or Destruction (AREA)
  • Massaging Devices (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
  • Radiation-Therapy Devices (AREA)
  • Servomotors (AREA)

Abstract

A switching device controlling at least one hydraulically operating apparatus has two check valves working in opposition to one another in a feed conduit and a discharge conduit, respectively. The conduits are connected to the operating apparatus, as well as to a pilot valve. Two openable nonreturn valves are connected parallel to the two check valves. The control line of one openable nonreturn valve is connected to the blocking connection of the other openable nonreturn valve. The switching device is especially for controlling a hydraulic cylinder to provide a float setting at low cost, with reliable operation, and with few components.
EP96100338A 1995-03-29 1996-01-11 Snap-in locking device Expired - Lifetime EP0735275B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19511522 1995-03-29
DE19511522A DE19511522C1 (en) 1995-03-29 1995-03-29 Switching mechanism for hydraulic actuator

Publications (3)

Publication Number Publication Date
EP0735275A2 EP0735275A2 (en) 1996-10-02
EP0735275A3 true EP0735275A3 (en) 1998-04-22
EP0735275B1 EP0735275B1 (en) 2002-09-18

Family

ID=7758059

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96100338A Expired - Lifetime EP0735275B1 (en) 1995-03-29 1996-01-11 Snap-in locking device

Country Status (5)

Country Link
US (1) US5699714A (en)
EP (1) EP0735275B1 (en)
JP (1) JPH08320001A (en)
AT (1) ATE224510T1 (en)
DE (2) DE19511522C1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10149787B4 (en) * 2000-10-23 2012-06-06 Linde Material Handling Gmbh Valve arrangement with floating position
US8469677B1 (en) * 2007-10-01 2013-06-25 Sauer-Danfoss Inc. Check valve pump with electric bypass valve
DE102008036876A1 (en) * 2008-08-07 2010-04-15 Schaeffler Kg Camshaft adjusting device for an internal combustion engine
CN103697315A (en) * 2013-12-12 2014-04-02 广西壮族自治区特种设备监督检验院 Shoulder safety press lever locking mechanism for recreation facility
DE102015216833A1 (en) * 2015-09-03 2017-03-09 Robert Bosch Gmbh One-way valve for a gate valve, method for driving the pilot operated check valve and gate valve with the pilot operated check valve
DE102016214767A1 (en) * 2016-02-16 2017-08-17 Sms Group Gmbh Synchronous cylinder for extrusion presses
CN114135532A (en) * 2021-10-11 2022-03-04 烟台艾迪精密机械股份有限公司 Parallel integrated multi-stage one-way valve

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3463187A (en) * 1968-02-07 1969-08-26 Gen Signal Corp Hydraulically operated power steering circuit
US4169490A (en) * 1977-06-03 1979-10-02 Taplin John F Pilot operated four way valve
JPS5670105A (en) * 1979-11-13 1981-06-11 Mitsuwa Seiki Co Ltd Oil jack
DE3524759A1 (en) * 1985-07-11 1987-01-22 Bosch Gmbh Robert Directional control valve

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4362018A (en) * 1980-06-12 1982-12-07 Kobe Steel, Ltd. Hydraulic rotation control circuit
JPH0452087Y2 (en) * 1988-11-14 1992-12-08
DE4105459A1 (en) * 1991-02-21 1992-08-27 Heilmeier & Weinlein HYDRAULIC CONTROL DEVICE
US5351601A (en) * 1992-05-04 1994-10-04 Control Concepts, Inc. Hydraulic control system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3463187A (en) * 1968-02-07 1969-08-26 Gen Signal Corp Hydraulically operated power steering circuit
US4169490A (en) * 1977-06-03 1979-10-02 Taplin John F Pilot operated four way valve
JPS5670105A (en) * 1979-11-13 1981-06-11 Mitsuwa Seiki Co Ltd Oil jack
DE3524759A1 (en) * 1985-07-11 1987-01-22 Bosch Gmbh Robert Directional control valve

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 005, no. 135 (M - 085) 27 August 1981 (1981-08-27) *

Also Published As

Publication number Publication date
US5699714A (en) 1997-12-23
ATE224510T1 (en) 2002-10-15
JPH08320001A (en) 1996-12-03
EP0735275A2 (en) 1996-10-02
EP0735275B1 (en) 2002-09-18
DE19511522C1 (en) 1996-07-18
DE59609666D1 (en) 2002-10-24

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