Nursing bottle
US6446822B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2000 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Sep 28, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61J11/04
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention is an improved nursing bottle, providing a new valve within its bottom structure. A flexible disk is disposed within the bottom end cap of the nursing bottle, clamped at its periphery to the periphery of the base when the bottle is assembled. The disk has a ring of slits near its periphery which are closed when pressure inside the bottle equals ambient pressure. The slits are further sealed by contact with the base. Holes, which are sealed closed by contact with the disk, are provided in the base within a central portion which does not contact the slits in the disk. When pressure within the bottle drops, the disk bows upwardly in its center, opening the valve and allowing air to enter the bottle. When pressure within the bottle increases, the valve again closes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.