Pocket-spring core and method for producing the pocket-spring core
US11633048B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 9, 2017 |
| Grant date | Apr 25, 2023 |
| Priority date | — |
| Expiry date | Jan 5, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB68G9/00
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A pocket-spring core having at least one first zone and at least one second zone, wherein the first zone has at least two rows of a first spring portion and at least one of the second zones has at least one row or line of a second spring portion, wherein the second spring portion has at least two layers which are located vertically one above the other and comprise in each case a plurality of helically wound first compression springs, in a first, upper layer, and second compression springs, in a second, lower layer, and at least one row of a third spring portion, is distinguished in that at least one of the second zones of the pocket-spring core has at least one channel-like depression.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.