Preloaded spring assembly

A - Human Necessities – 47 – C

Patent

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Details

A47C 25/00 (2006.01) A47C 23/04 (2006.01) A47C 23/05 (2006.01) A47C 27/06 (2006.01) F16F 1/12 (2006.01) F16F 3/04 (2006.01)

Patent

CA 2245474

A bedding or furniture spring product comprising a plurality of coil springs arranged in linear rows and columns. Each of the coil springs is preloaded by an endless strip of fabric, the strip of fabric encircling the exterior of one of the coil springs. The interior surface of the strip of fabric may be coated with a non-slip material so as to prevent the strip from falling or moving off the coil spring. Alternatively, the coil spring itself may be coated with a non-slip material. The strip of fabric leaves a portion of the end turns of the coil springs uncovered enabling the coil springs to be secured to a wire grid as for example by being wrapped around or clipped or laced to wires of the grid assembly. Alternatively, traditional hand 8-way tie may be used to connect the precompressed coil springs together and to a frame.

Article à ressorts de literie ou de produit mobilier comportant plusieurs ressorts à boudin disposé en rangées et colonnes linéaires. Chaque ressort à boudin est taré au moyen d'une bande de tissu sans fin, la bande de tissu encerclant l'extérieur d'un des ressorts à boudin. La surface intérieure de la bande de tissu peut être enduite d'un matériau antidérapant de façon à empêcher la bande de tomber ou de se déplacer à l'écart du ressort à boudin. Où encore, le ressort à boudin peut être lui-même enduit d'un matériau antidérapant. La bande de tissu laisse une partie des spires terminales des ressorts à boudin à découvert, ce qui permet de fixer les ressorts à boudin à une grille en fils métalliques comme, par exemple, être enveloppés autour ou découpés ou lacés aux fils métalliques de la grille. On peut également utiliser le guindage en huit classique à la main pour raccorder les ressorts tarés au cadre.

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