Pocketed coil strings having a flat overlap side seam
US4986518A · kind A · utility
39Cited by
11References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 19, 1989 |
| Grant date | Jan 22, 1991 |
| Priority date | — |
| Expiry date | May 19, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB68G9/00
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An encapuslated spring for use with mattresses, cushions, or the like, including a spring enclosed within flexible sheet material, the material being formed in a tubular configuration such that its longitudinal edges are in a flat overlap configuration. The flat overlap configuration reduces a phenomenon known as false loft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.