Spout structure of a drinking fountain for a pet
US6786180B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Jan 29, 2003 |
| Grant date | Sep 7, 2004 |
| Priority date | — |
| Expiry date | Jan 29, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01K7/06
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A pet drinking fountain includes a water reservoir, a spout, a muzzle fastened to the outer end of the spout, and a stop ball movably disposed in the hollow interior of the muzzle such that the stop ball is partially emerged from an opening of the muzzle. The spout is provided in the longitudinal through hole with an air tube which is provided with an air passage and is smaller in diameter than the longitudinal through hole of the spout. The air tube is located in the spout such that the air passage of the air tube is in communication with the muzzle and the water reservoir, and such that the air tube and the inner wall of the longitudinal through hole of the spout form therebetween a water passage in communication with the water reservoir and the muzzle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.