SE8404532L - HYDRAULIC MANOVERABLE PRESSURE CYLINDER DEVICE - Google Patents

HYDRAULIC MANOVERABLE PRESSURE CYLINDER DEVICE

Info

Publication number
SE8404532L
SE8404532L SE8404532A SE8404532A SE8404532L SE 8404532 L SE8404532 L SE 8404532L SE 8404532 A SE8404532 A SE 8404532A SE 8404532 A SE8404532 A SE 8404532A SE 8404532 L SE8404532 L SE 8404532L
Authority
SE
Sweden
Prior art keywords
cylinder
cylinders
pump
line
hydraulic
Prior art date
Application number
SE8404532A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE8404532D0 (en
Inventor
J Korth
Original Assignee
Rentrop Hubbert & Wagner
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 Rentrop Hubbert & Wagner filed Critical Rentrop Hubbert & Wagner
Publication of SE8404532D0 publication Critical patent/SE8404532D0/en
Publication of SE8404532L publication Critical patent/SE8404532L/en

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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/22—Synchronisation of the movement of two or more servomotors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/1635—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable characterised by the drive mechanism
    • B60N2/1665—Hydraulic or pneumatic actuation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
    • F01D5/282—Selecting composite materials, e.g. blades with reinforcing filaments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/321—Rotors specially for elastic fluids for axial flow pumps for axial flow compressors
    • F04D29/324—Blades
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7114—Multiple output members, e.g. multiple hydraulic motors or cylinders with direct connection between the chambers of different actuators
    • F15B2211/7121—Multiple output members, e.g. multiple hydraulic motors or cylinders with direct connection between the chambers of different actuators the chambers being connected in series

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Transportation (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Composite Materials (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Seats For Vehicles (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Actuator (AREA)

Abstract

An hydraulic device includes a pump (14) and pressure cylinders (2,3) connected in series. Pistons (4,5) divide each cylinder into upper (8,10) and lower chambers (9,11) and have their piston rods (6,7) connected to, for example, a vehicle seat (1) to be raised or lowered. The upper and lower chamber of adjacent cylinders are interconnected and the pump (14) is connected with its main line (15) to the lower chamber (9) of a first cylinder (2) and with its return line (16) to the upper chamber (10) of the last cylinder (3) to raise the seat (1), and vice versa to lower the seat. A transfer valve (19) is connected in parallel between one line (15) from the pump and a line (12) between two cylinders to bypass the cylinder in event of a pressure build up beyond a predetermined level. Transfer valves may also be connected in parallel across other intermediate cylinders (if any). <IMAGE>
SE8404532A 1983-09-17 1984-09-10 HYDRAULIC MANOVERABLE PRESSURE CYLINDER DEVICE SE8404532L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833333688 DE3333688A1 (en) 1983-09-17 1983-09-17 Pressurised cylinder arrangement which can be activated hydraulically

Publications (2)

Publication Number Publication Date
SE8404532D0 SE8404532D0 (en) 1984-09-10
SE8404532L true SE8404532L (en) 1985-03-18

Family

ID=6209406

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8404532A SE8404532L (en) 1983-09-17 1984-09-10 HYDRAULIC MANOVERABLE PRESSURE CYLINDER DEVICE

Country Status (10)

Country Link
JP (1) JPS6084403A (en)
KR (1) KR910003951B1 (en)
BR (1) BR8404622A (en)
DE (1) DE3333688A1 (en)
ES (1) ES535462A0 (en)
FR (1) FR2552170A1 (en)
GB (1) GB2147054A (en)
IT (1) IT1181571B (en)
SE (1) SE8404532L (en)
ZA (1) ZA847262B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01277416A (en) * 1988-04-27 1989-11-07 Iseki & Co Ltd Hydraulic unit in farm working machine
US6051042A (en) * 1997-09-12 2000-04-18 Donaldson Company, Inc. Air cleaner assembly

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1213248B (en) * 1959-01-20 1966-03-24 Froriep Gmbh Maschf Device for rigid and compulsory hydraulic parallel guidance of moving machine parts or the like.
US3106064A (en) * 1960-10-21 1963-10-08 Dura Corp Fluid pressure control
US3184920A (en) * 1963-06-12 1965-05-25 Caterpillar Tractor Co Leakage control for bulldozer pitch jack circuit
US3476016A (en) * 1967-10-20 1969-11-04 Cascade Corp Apparatus for producing coordinated,simultaneous actuation of multiple rams
US3558094A (en) * 1969-07-16 1971-01-26 Universal Oil Prod Co Vehicle seat having optimum angular motion characteristics
JPS5016863B2 (en) * 1971-10-11 1975-06-17
CH601676A5 (en) * 1976-11-26 1978-07-14 Kempf & Co Ag
JPS5434370U (en) * 1977-08-11 1979-03-06

Also Published As

Publication number Publication date
ZA847262B (en) 1985-05-29
FR2552170A1 (en) 1985-03-22
KR910003951B1 (en) 1991-06-17
BR8404622A (en) 1985-05-14
ES8505298A1 (en) 1985-05-16
ES535462A0 (en) 1985-05-16
SE8404532D0 (en) 1984-09-10
GB8422392D0 (en) 1984-10-10
IT1181571B (en) 1987-09-30
IT8485633A0 (en) 1984-09-14
DE3333688A1 (en) 1985-03-28
JPS6084403A (en) 1985-05-13
GB2147054A (en) 1985-05-01
KR850002881A (en) 1985-05-20

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Legal Events

Date Code Title Description
NAV Patent application has lapsed

Ref document number: 8404532-7

Effective date: 19881021