Method and apparatus for the production of a pocketed spring unit
US10961112B2 · kind B2 · utility
0Cited by
29References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2018 |
| Grant date | Mar 30, 2021 |
| Priority date | — |
| Expiry date | Dec 9, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/53996
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
Disclosed are methods, apparatus, devices, and other implementations, including a method for the production of a pocketed spring unit that includes compressing a plurality of springs, moving the springs to positions between upper and lower layers of fabric or other material, step-wise advancing the material and the springs in a spring unit output direction, and welding together the lengths of fabric or other material at each step-wise advancement to produce a pattern of welds in which are formed a plurality of discrete pockets, each containing a spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.