Apparatus and method for manufacturing a waterproof pillow
US4731891A · kind A · utility
26Cited by
14References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1985 |
| Grant date | Mar 22, 1988 |
| Priority date | — |
| Expiry date | Jun 28, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47K3/001
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A waterproof pillow has body made of closed cell foam material and an open cell foam insert disposed with the airtight chamber formed by the body. After assembly, the pillows may be coated with a plastic material. The combination of closed cell foam, an airtight chamber, and open cell foam creates a unique cushioning effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.