System for manufacturing string of coiled pocketed springs
US10499746B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Dec 9, 2015 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Aug 30, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/53383
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A system for manufacturing a string of pocketed coil springs comprising: a coil-forming subsystem that produces two coil springs; a spring transporter subsystem that receives the two coil springs at a first position and conveys the two coil springs to a second position; a spring compressor subsystem that compresses the two coil springs; a fabric-folding subsystem that receives a piece of fabric and folds the fabric to create an open side; a spring inserter subsystem that receives the two compressed coil springs and inserts the two compressed coil springs between top and bottom surfaces of a folded piece of fabric; two welder subsystems that form first and second welds between top and bottom surfaces of the folded piece of fabric, the first welds and the second welds forming a plurality of pockets in the fabric, each of the plurality of pockets comprising a compressed coil spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.