Spring core having border wire with generally rectangular cross-section
US8769748B2 · kind B2 · utility
3Cited by
56References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2013 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Mar 12, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F3/04
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A bedding or seating product comprising a spring core including upper and lower border wires. Each of the border wires is generally rectangular in cross-section to reduce wire costs without compromising beam strength of the border wire. Each row of springs of the spring core may be made of a single piece of wire. The rows of springs may be arranged in side-by-side rows and columns and be connected with each other by helical lacing wires.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.