Spill-proof closure for a beverage container
US5050758A · kind A · utility
48Cited by
15References
18Claims
0Family size
Inventors
Key dates
| Filing date | Nov 16, 1990 |
| Grant date | Sep 24, 1991 |
| Priority date | — |
| Expiry date | Nov 16, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47G19/2272
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A spill-proof closure for containers used in dispensing liquid beverages. The closure contains an opening for delivery of a contained beverage. The closure also includes a sealing member and a deflectable member. Together these parts form a flow control valve which is normally closed, but opens when external lip pressure is applied during normal drinking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.