Method and apparatus for the production of a pocketed spring unit
US10167186B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 2013 |
| Grant date | Jan 1, 2019 |
| Priority date | — |
| Expiry date | Mar 11, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/53996
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A method and apparatus for the production of a pocketed spring unit by compressing and feeding a plurality of springs (42) into troughs (2A, 4A) or castellations in opposed conveyor belts (2,4), moving the springs (42) from the troughs (2A, 4A) or castellations to a position between upper and lower layers of fabric or other material (16A, 18A), step-wise advancing the material (16A, 18A) and the springs (42) in the direction of the output of the apparatus and welding together the lengths of fabric or other material (16A, 18A) at each step-wise advancement by a plurality of sequentially controlled welding anvils (10) so as to form a plurality of discrete pockets (46) each containing a spring (42).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.