Animal caging system
US4402280A · kind A · utility
Inventor
Key dates
| Filing date | Apr 21, 1982 |
| Grant date | Sep 6, 1983 |
| Priority date | — |
| Expiry date | Apr 21, 2002 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01K1/031
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An improved animal caging system of the type having a plurality of hollow boxes suspended on flanges from a plurality of ducted shelves is provided. The ducting for the ventilation system is entirely enclosed and is formed integrally with the caging system rack. A sliding valve member mounted in each lid is biased to seal air openings to the cage upon removal from the rack, a protrusion contacting the rack to uncover the air openings upon cage insertion. Similar valves are optionally placed in the rack to maintain balanced airflow when a cage is removed. The system minimizes the possibility of cross-infection between occupants of different cages, and between people and cage occupants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.