EP0211809A3 - A structure, adjustable in extension by means of an inner closed-circuit hydraulic device, particularly suitable as vertical rod structure for the seat rest of a chair - Google Patents

A structure, adjustable in extension by means of an inner closed-circuit hydraulic device, particularly suitable as vertical rod structure for the seat rest of a chair Download PDF

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Publication number
EP0211809A3
EP0211809A3 EP86830151A EP86830151A EP0211809A3 EP 0211809 A3 EP0211809 A3 EP 0211809A3 EP 86830151 A EP86830151 A EP 86830151A EP 86830151 A EP86830151 A EP 86830151A EP 0211809 A3 EP0211809 A3 EP 0211809A3
Authority
EP
European Patent Office
Prior art keywords
extension
section
cylinder
fixed
sections
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.)
Withdrawn
Application number
EP86830151A
Other languages
German (de)
French (fr)
Other versions
EP0211809A2 (en
Inventor
Giancarlo Piretti
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.)
Pro Cord SRL
Original Assignee
Pro Cord SRL
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 Pro Cord SRL filed Critical Pro Cord SRL
Publication of EP0211809A2 publication Critical patent/EP0211809A2/en
Publication of EP0211809A3 publication Critical patent/EP0211809A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • A47C3/20—Chairs or stools with vertically-adjustable seats
    • A47C3/30—Chairs or stools with vertically-adjustable seats with vertically-acting fluid cylinder

Landscapes

  • Chairs Characterized By Structure (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

In order to adjust the extension of a twin-section tale­ scopic structure, normally compression loaded, the sections themselves, forced to stretch by an inner coaxial spring, are connected to each other by an inner structure that is also coaxial, can be adjusted in extension and is made up of a cylinder-piston unit of a completely oil filled equal section inner chambers type. One stem of such cylinder+piston unit is fixed to the free end of one of said sections, while the body of the cylinder - piston unit is fixed to the free end of the other telescopic section with interposition of bearings. A cylindrical box is fitted on or in proximity of the piston of the hydraulic unit. This box intercepts special holes through which the pres­ sure chambers of the same unit can be interconnected. The box is forced to close by a spring and can be remote controlled by means of a control rod that passes axially through the stem fixed to one of the telescopic sections and sticks out of that section for the necessary operation.
EP86830151A 1985-06-11 1986-06-05 A structure, adjustable in extension by means of an inner closed-circuit hydraulic device, particularly suitable as vertical rod structure for the seat rest of a chair Withdrawn EP0211809A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8503462A IT8503462A0 (en) 1985-06-11 1985-06-11 STRUCTURE ADJUSTABLE IN LENGTH THROUGH AN INTERNAL HYDRAULIC DEVICE, AND CLOSED CIRCUIT, PARTICULARLY SUITABLE AS A UPRIGHT STRUCTURE FOR SUPPORTING THE SEAT PLAN OF AN ARMCHAIR
IT346285 1985-06-11

Publications (2)

Publication Number Publication Date
EP0211809A2 EP0211809A2 (en) 1987-02-25
EP0211809A3 true EP0211809A3 (en) 1987-07-22

Family

ID=11107824

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86830151A Withdrawn EP0211809A3 (en) 1985-06-11 1986-06-05 A structure, adjustable in extension by means of an inner closed-circuit hydraulic device, particularly suitable as vertical rod structure for the seat rest of a chair

Country Status (4)

Country Link
EP (1) EP0211809A3 (en)
JP (1) JPS6263230A (en)
ES (1) ES8703976A1 (en)
IT (1) IT8503462A0 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1240378B (en) * 1990-05-21 1993-12-10 Skillmatic S.R.L. ADJUSTABLE LENGTH CYLINDER, USABLE PARTICULARLY AS A SUPPORT COLUMN FOR CHAIRS, SEATS AND SIMILAR.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3322796A1 (en) * 1983-06-24 1985-01-03 Eckard St. Margrethen Hansen Spring element

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3322796A1 (en) * 1983-06-24 1985-01-03 Eckard St. Margrethen Hansen Spring element

Also Published As

Publication number Publication date
IT8503462A0 (en) 1985-06-11
JPS6263230A (en) 1987-03-19
ES555955A0 (en) 1987-03-01
ES8703976A1 (en) 1987-03-01
EP0211809A2 (en) 1987-02-25

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Inventor name: PIRETTI, GIANCARLO