Continuous pocketed spring unit and method of manufacture
US10111533B2 · kind B2 · utility
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14References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2011 |
| Grant date | Oct 30, 2018 |
| Priority date | — |
| Expiry date | Jan 26, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49613
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A method of forming a pocketed spring unit (10), comprising a plurality of pocketed spring portions (22, 24, 26) arranged in a row, is described. The pocketed spring portions each comprise a portion of coil spring encased in a pocket (32, 34, 36), wherein the axis of the spring is substantially transverse to the row. The method comprises the steps of: forming a continuous coil spring, encasing the spring in a pocket and deforming the encased spring to form the pocketed spring portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.