using tensioned springs, e.g. flat type (A47C23/02 takes precedence)

Full Title

Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases > using tensioned springs, e.g. flat type (A47C23/02 takes precedence)

Child Classifications

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• A47C 23/125
• A47C 23/14 forming nets; combined with nets
• A47C 23/16 of plane meandering type
• A47C 23/18 of resilient webbing
• A47C 23/20 of resilient sheet form
• A47C 23/22 of tensioned rubber cords or like cords
• A47C 23/24 using tensioned textile or other non-resilient strips
• A47C 23/26 Frames therefor; Connecting the springs to the frame
• A47C 23/28 Tensioning devices therefor