SE8902665D0 - hydraulic piston - Google Patents

hydraulic piston

Info

Publication number
SE8902665D0
SE8902665D0 SE8902665A SE8902665A SE8902665D0 SE 8902665 D0 SE8902665 D0 SE 8902665D0 SE 8902665 A SE8902665 A SE 8902665A SE 8902665 A SE8902665 A SE 8902665A SE 8902665 D0 SE8902665 D0 SE 8902665D0
Authority
SE
Sweden
Prior art keywords
piston
hydraulic piston
chamber
adjustable
compensates
Prior art date
Application number
SE8902665A
Other languages
Swedish (sv)
Other versions
SE8902665L (en
Inventor
B Petersson
Original Assignee
Tooling Promotion Ab
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 Tooling Promotion Ab filed Critical Tooling Promotion Ab
Publication of SE8902665D0 publication Critical patent/SE8902665D0/en
Priority to AU54251/90A priority Critical patent/AU5425190A/en
Priority to PCT/SE1990/000235 priority patent/WO1990012220A1/en
Publication of SE8902665L publication Critical patent/SE8902665L/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/02—Rocking chairs
    • A47C3/025—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
    • A47C3/026—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame with central column, e.g. rocking office chairs; Tilting chairs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
    • F16F9/443—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction manually adjusted while the damper is fully retracted or extended in a non-operational mode by rotating mechanical means that have engaged between the piston and one end of the cylinder

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

Abstract

A telescopic hydraulic piston (5) fitted to an adjustable chair has upper and lower end walls (27,28) and an outer wall (26) in which is housed the sealed piston (15). The piston carries a seal (22). TWo liquid filled chambers (16,17) are formed and interconnected by a pipe (18) with an adjustable valve (19). - Within the lower chamber a resilient compression spring (21) reacts on the piston as pressure is applied to the force transmitting member (8), and an elastic compressible means (20) compensates for the loss of liquid displaced to the upper chamber.
SE8902665A 1989-04-05 1989-08-04 Hydraulic piston for adjustable chairs - has piston chamber with compression spring and compressible means to compensate for fluid loss from chamber SE8902665L (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU54251/90A AU5425190A (en) 1989-04-05 1990-04-05 Hydraulic device for chairs
PCT/SE1990/000235 WO1990012220A1 (en) 1989-04-05 1990-04-05 Hydraulic device for chairs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8901201A SE8901201D0 (en) 1989-04-05 1989-04-05 hydraulic piston

Publications (2)

Publication Number Publication Date
SE8902665D0 true SE8902665D0 (en) 1989-08-04
SE8902665L SE8902665L (en) 1990-10-06

Family

ID=20375564

Family Applications (2)

Application Number Title Priority Date Filing Date
SE8901201A SE8901201D0 (en) 1989-04-05 1989-04-05 hydraulic piston
SE8902665A SE8902665L (en) 1989-04-05 1989-08-04 Hydraulic piston for adjustable chairs - has piston chamber with compression spring and compressible means to compensate for fluid loss from chamber

Family Applications Before (1)

Application Number Title Priority Date Filing Date
SE8901201A SE8901201D0 (en) 1989-04-05 1989-04-05 hydraulic piston

Country Status (1)

Country Link
SE (2) SE8901201D0 (en)

Also Published As

Publication number Publication date
SE8902665L (en) 1990-10-06
SE8901201D0 (en) 1989-04-05

Similar Documents

Publication Publication Date Title
NO845088L (en) MOVEMENT COMPENSATOR AND EXTENSION DEVICE.
GB8716686D0 (en) Piezoelectric actuator
DE3270300D1 (en) Device at a pressure fluid cylinder without piston rod
DE3876707D1 (en) DAMPING DEVICE.
GR3003458T3 (en) Coupling for the transmission of alternating couples
FR2448663A1 (en) HYDRAULICALLY DAMPING RUBBER SUPPORT
EP0041608A3 (en) Column for liquid chromatography
GB2139318B (en) Piston/cylinder seal construction
EP0346040A3 (en) Adjustable damper means for shock absorber
ATE75825T1 (en) LENGTH-ADJUSTABLE ADJUSTMENT DEVICE.
EP0524665A3 (en) Fluid filled elastomeric damping device
ES291781U (en) Pressure fluid cylinder.
DE3776112D1 (en) DEVICE FOR SPRAYING OUT VISCOSE MEDIA.
SE8901201D0 (en) hydraulic piston
GB2001731A (en) Torsionally elastic damping mechanism
SE8700093D0 (en) CONNECTION DEVICE
SE9703964L (en) Device on the end of a pressurized fluid cylinder and pressurized fluid cylinder comprising one or two such devices
ATE317511T1 (en) LENGTH-ADJUSTABLE GAS SPRING
JPS55139948A (en) Seallup structure of pistonncylinder assembly
SU1766409A1 (en) Slip-proof device
EP0285817A3 (en) Inter-fluid transmitter
DE50008881D1 (en) vibration
SE8804035D0 (en) PRESSURE FLUID CYLINDER WITH DEVICE FOR ADAPTATION
SE8002428L (en) DIMENSION DEVICE FOR SINGLE-ACTIVE PRESSURE CYLINDER
GB755662A (en) Improvements in or relating to temperature-responsive and other expansible power elements

Legal Events

Date Code Title Description
NAV Patent application has lapsed

Ref document number: 8902665-2

Effective date: 19910114