Wave springs and cushioning articles containing the same
US9861207B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2015 |
| Grant date | Jan 9, 2018 |
| Priority date | — |
| Expiry date | Feb 9, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F1/025
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
Cushioning articles such as mattresses can include a three dimensional wave spring core. The wave spring includes a polymeric lattice spring structure including a plurality of alternating layers stackedly arranged to define a height of the wave spring, wherein each one of the alternating layers is defined by a single strand having one or more upward and downward undulations, wherein the alternating layers are arranged such that an upward undulation of one layer is connected to a downward undulation of the other layer to define a cell configured to receive a compressive force, wherein the lattice structure has a sinusoidal shape when viewed top down and is configured to have three dimensional structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.