Method of fabricating pillow presenting portions of different firmness
US4777855A · kind A · utility
55Cited by
14References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 21, 1987 |
| Grant date | Oct 18, 1988 |
| Priority date | — |
| Expiry date | Dec 21, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/04
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A composite plastic foam pillow has a convoluted upper surface, a flat lower surface and a core disposed between those surfaces which is provided with a central void for imparting decreased firmness to the pillow adjacent the void. It is fabricated by coring a block of plastic foam, cutting out a central portion of the core, and then replacing the core and sealing it in its original position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.