Coupled waveband suspension for bedding and seating units
US6647574B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 25, 2002 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Nov 25, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C23/066
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A coupled waveband (14, 21) suspension for bed underframes, seating, upholstery, and mattresses consists of several sinusoidal wavebands (14, 21) which run parallel and/or transversely to the longitudinal axis. Support elements (12, 35) are rigidly or moveably fixed to or ride on the crests or maxima of the wavebands (14, 21). The troughs or minima are supported by slide or roll bearing elements (17) affixed to the frame. A strong interactive coupling is achieved between the support elements (12, 35) causing a positive stroke of the less pressure-loaded segments and the appropriate support elements by the simultaneous lowering of the pressure-loaded waveband segments. The wavebands (14, 21) are manufactured out of higher quality, elastically flexible sold plastic or foam material, or of spring steel band or wire, duralumin, or out of formed laminated wood. In one embodiment, the suspension system includes crossed single or double storied wavebands (14, 14A, 21, 21A) affixed in pockets (90) or niches of the foam side construction of the mattress and which are freely moveable in most of the inner part of the core. In another embodiment, two crossed sets of wavebands (14, 14X, 21, 21X…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.