Ventilation of a water reservoir of a drinking fountain for a pet
US6640748B1 · kind B1 · utility
8Cited by
7References
4Claims
0Family size
Inventor
Key dates
| Filing date | Jan 13, 2003 |
| Grant date | Nov 4, 2003 |
| Priority date | — |
| Expiry date | Jan 13, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01K7/06
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A pet fountain includes a water reservoir, and a spout connected with a water discharging end of the water reservoir. The water reservoir is provided in a ventilation end with a through hole, and an elastic ventilation block. The elastic ventilation block is provided with a fitting portion, and a projection extending from the fitting portion which is fitted airtightly and removably into the through hole of the ventilation end and is provided with a ventilation hole. The projection is extended into the interior of the water reservoir and is provided with a slit in communication with the ventilation hole of the fitting portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.