EP0051732A1 - Sternförmiges Fussgestell - Google Patents

Sternförmiges Fussgestell Download PDF

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Publication number
EP0051732A1
EP0051732A1 EP81107564A EP81107564A EP0051732A1 EP 0051732 A1 EP0051732 A1 EP 0051732A1 EP 81107564 A EP81107564 A EP 81107564A EP 81107564 A EP81107564 A EP 81107564A EP 0051732 A1 EP0051732 A1 EP 0051732A1
Authority
EP
European Patent Office
Prior art keywords
hub
foot struts
metal
metal parts
plastic
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Withdrawn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
EP81107564A
Other languages
German (de)
English (en)
French (fr)
Inventor
Friedrich Martin Steifensand
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.)
STEIFENSAND SITZMOEBEL- UND TISCHFABRIK INH. F. MA
Original Assignee
F Martin Steifensand Sitzmobel- und Tischfabrik & Co KG 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 F Martin Steifensand Sitzmobel- und Tischfabrik & Co KG GmbH filed Critical F Martin Steifensand Sitzmobel- und Tischfabrik & Co KG GmbH
Publication of EP0051732A1 publication Critical patent/EP0051732A1/de
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/002—Chair or stool bases
    • A47C7/004—Chair or stool bases for chairs or stools with central column, e.g. office chairs

Definitions

  • the invention relates to a star-shaped base for chairs, in particular office swivel chairs, consisting of a hub with a conical inner opening for introducing the support column or the like and with foot struts projecting approximately radially outwards from the hub.
  • a star-shaped base for chairs in particular office swivel chairs, consisting of a hub with a conical inner opening for introducing the support column or the like and with foot struts projecting approximately radially outwards from the hub.
  • polished or chrome-plated metal parts are known on their outer surfaces, which are welded together. This and also the production of the conical inner opening requires a not inconsiderable manufacturing effort.
  • the object of the invention is to reduce the manufacturing outlay for such a pedestal without having to accept a loss in quality.
  • the hub and foot struts each have a Plastic parts surrounding metal parts, preferably steel parts, wherein the metal parts of the foot struts are attached to the metal part of the hub.
  • the plastic coating also provides perfect rust protection and also contributes to the stability, especially the flexural strength of the base frame.
  • the hub consists of a cylindrical piece of metal pipe and the plastic sheathing surrounding this piece of metal pipe is provided with a conical inner surface to form a conical inner opening. While the previously required production of the conical inner surface on a metal part forming the hub was technically very complex, only one-off molding costs are now required. Then the sheaths and their conical inner surface can be produced with very little cost and exactly in the desired conicity.
  • the hub is formed by a cylindrical piece of steel tube 1 with a plastic jacket 2.
  • the rotationally symmetrical inner surface 3 of this plastic sheathing 2 forms a cone that faces downwards, ie. H. converges in the direction of arrow 4. This creates a conically tapering downward inner opening 5 for inserting the support column or the like (not shown).
  • the foot struts each have a metallic inner part 6 with a plastic sheath 7, the metallic inner part 6, which is also preferably made of steel, being welded to the cylindrical pipe section 1 in accordance with number 8.
  • the plastic sheaths 2, 7 s, preferably a single, one-piece sheath.
  • feet (not shown) or lugs 9 carrying these can be provided.
  • the metal parts 6 of the foot struts are stamped parts. So they do not have to be bent into their shape. This also reduces the manufacturing costs.
  • the foot struts form a "T" in cross section (see FIG. 4), the metal part 6 being located in the middle of the vertical "bar” of the "T", the plane of which therefore runs parallel to the longitudinal axis 9 of the pipe section 1.
  • the plastic sheath 7 surrounding the metal part also forms the horizontal "bar” 7 'of the "T".

Landscapes

  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Legs For Furniture In General (AREA)
  • Piles And Underground Anchors (AREA)
EP81107564A 1980-11-08 1981-09-23 Sternförmiges Fussgestell Withdrawn EP0051732A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8029865U 1980-11-08
DE19808029865U DE8029865U1 (de) 1980-11-08 1980-11-08 Sternfoermiges fussgestell

Publications (1)

Publication Number Publication Date
EP0051732A1 true EP0051732A1 (de) 1982-05-19

Family

ID=6720445

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81107564A Withdrawn EP0051732A1 (de) 1980-11-08 1981-09-23 Sternförmiges Fussgestell

Country Status (6)

Country Link
EP (1) EP0051732A1 (xx)
JP (1) JPS5790648U (xx)
DE (1) DE8029865U1 (xx)
DK (1) DK473481A (xx)
FI (1) FI813023L (xx)
ZA (1) ZA817234B (xx)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2143430A (en) * 1983-07-19 1985-02-13 Midland Metals Bases
EP1212963A1 (en) * 2000-11-16 2002-06-12 Gaber S.r.l. Base for tables
EP2145566A1 (en) 2008-07-17 2010-01-20 AMG Medical Inc. Intraveneous support apparatus
US7896298B2 (en) 2008-07-11 2011-03-01 Amg Medical Inc. Intravenous support apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1529130A (fr) * 1966-06-25 1968-06-14 Procédé de fabrication de chaises, canapés et autres en matière plastique
EP0017495A2 (en) * 1979-04-06 1980-10-15 Steelcase Inc. Pedestal type chair base

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1529130A (fr) * 1966-06-25 1968-06-14 Procédé de fabrication de chaises, canapés et autres en matière plastique
EP0017495A2 (en) * 1979-04-06 1980-10-15 Steelcase Inc. Pedestal type chair base

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2143430A (en) * 1983-07-19 1985-02-13 Midland Metals Bases
EP1212963A1 (en) * 2000-11-16 2002-06-12 Gaber S.r.l. Base for tables
US7896298B2 (en) 2008-07-11 2011-03-01 Amg Medical Inc. Intravenous support apparatus
EP2145566A1 (en) 2008-07-17 2010-01-20 AMG Medical Inc. Intraveneous support apparatus

Also Published As

Publication number Publication date
JPS5790648U (xx) 1982-06-04
DE8029865U1 (de) 1982-04-22
FI813023L (fi) 1982-05-09
DK473481A (da) 1982-05-09
ZA817234B (en) 1982-10-27

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19820702

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: STEIFENSAND SITZMOEBEL- UND TISCHFABRIK INH. F. MA

Owner name: STEIFENSAND, FRIEDRICH MARTIN

18D Application deemed to be withdrawn

Effective date: 19831222

RIN1 Information on inventor provided before grant (corrected)

Inventor name: STEIFENSAND, FRIEDRICH MARTIN