Method of manufacturing partially foam encased pocketed spring assembly
US12054381B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2023 |
| Grant date | Aug 6, 2024 |
| Priority date | — |
| Expiry date | Jan 11, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB68G9/00
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A partially foam encased pocketed spring assembly is made in a fully automated assembly machine. A first foam rail is introduced into the assembly machine and glued to upper and lower substrate webs. A first string of pocketed springs is then glued to a side surface of the first foam rail between upper and lower substrate webs and glued to the upper and lower substrate webs. Additional strings are joined together to create a pocketed spring interior. A second foam rail is then introduced into the assembly machine and glued to an outer string and to the upper and lower substrate webs to create a core. Third and fourth foam rails are glued to the core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.