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1. WO1990013242 - HUB CONSTRUCTION FOR ROTATABLE CHAIR

Publication Number WO/1990/013242
Publication Date 15.11.1990
International Application No. PCT/FI1990/000127
International Filing Date 09.05.1990
Chapter 2 Demand Filed 05.11.1990
IPC
A47C 3/18 2006.01
AHUMAN NECESSITIES
47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
CCHAIRS; SOFAS; BEDS
3Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
18Chairs or stools with rotatable seat
CPC
A47C 3/18
AHUMAN NECESSITIES
47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
CCHAIRS
3Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
18Chairs or stools with rotatable seat
A47C 3/185
AHUMAN NECESSITIES
47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
CCHAIRS
3Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
18Chairs or stools with rotatable seat
185self-returning to the original position
Applicants
  • F:MA MEKRAPID [FI]/[FI] (AllExceptUS)
  • KJELLMAN, Fredrik [FI]/[FI] (UsOnly)
Inventors
  • KJELLMAN, Fredrik
Agents
  • OY JALO ANT-WUORINEN AB
Priority Data
89225010.05.1989FI
Publication Language English (EN)
Filing Language Swedish (SV)
Designated States
Title
(EN) HUB CONSTRUCTION FOR ROTATABLE CHAIR
(FR) ENSEMBLE DE MOYEU POUR CHAISE PIVOTANTE
Abstract
(EN)
The invention is related to a hub construction for a rotatable chair, which automatically returns to the initial position when the chair is relieved. The hub construction comprises a vertical shaft (1) fastened to the lower side of the seat of the chair and a hub (2) on the leg portion of the chair, to which hub (2) the lower portion of the shaft (1) is rotatably fastened. The return movement is achieved by means of a cam surface (5) acting in the axial direction and located on the end of a spring loaded sleeve (6) enclosing the shaft (1), which cam surface (5) is arranged to cooperate with a radially directed guide pin (4). The invention is characterized in that the guide pin (4) is fastened to the lower portion of the shaft (3) and that the spring loaded sleeve (6) is mounted torsionally rigidly on the hub (2).
(FR)
L'invention concerne un ensemble de moyeu pour une chaise pivotante qui revient automatiquement à la position initiale lorsque la chaise est libérée. L'ensemble de moyeu comporte un arbre vertical (1) fixé au côté inférieur du siège de la chaise ainsi qu'un moyeu (2) sur le pied de la chaise, moyeu (2) auquel est fixée rotative la partie inférieure de l'arbre (1). Le mouvement de rappel s'effectue au moyen d'une surface de came (5) agissant dans le sens et située au bout d'un manchon à ressort (6), enserrant l'arbre (1), laquelle surface de came (5) est disposée pour coopérer avec une broche-guide (4) qui est dirigée radialement. L'invention est caractérisée par le fait que la broche-guide (4) est fixée à la partie inférieure de l'arbre (3) et que le manchon à ressort (6) est monté rigide en torsion sur le moyeu.
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