Spring assembly having reinforced edge construction
US4867423A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 25, 1988 |
| Grant date | Sep 19, 1989 |
| Priority date | — |
| Expiry date | Aug 25, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C27/062
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A rectangular spring assembly (10,10') of the continuous coil type is disclosed as including continuous coil edge reinforcers (20) at a first set of opposite margins (12) between which continuous coils (16) extend. Additional edge reinforcers (24,24') are also preferably provided at a second set of opposite margins (14) of the assembly. In one embodiment, the spring assembly (10) has its edge reinforcers (20,24) oriented with straight connectors (30) thereof located adjaent associated border wires (34) and preferably has the edge reinforcers all made unitary with each other. In another embodiment, the spring assembly (10') has the straight connector portions (30) of its edge reinforcers (24') spaced inwardly from the border wires (34) with the edge reinforcers (20) made separate from the edge reinforcers (24').
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.