Animal husbandry – Milkers – With signals – indicators – registers – and timers
Patent
1979-03-05
1980-08-12
Chamblee, Hugh R.
Animal husbandry
Milkers
With signals, indicators, registers, and timers
119 17, 119 33, 47 11, 47 17, 62417, A01K 103
Patent
active
042167418
ABSTRACT:
A chamber for exposing animals, plants, or materials to air containing gases or aerosols is so constructed that catch pans for animal excrement, for example, serve to aid the uniform distribution of air throughout the chamber instead of constituting obstacles as has been the case in prior animal exposure chambers. The chamber comprises the usual imperforate top, bottom and side walls. Within the chamber, cages and their associated pans are arranged in two columns. The pans are spaced horizontally from the walls of the chamber in all directions. Corresponding pans of the two columns are also spaced horizontally from each other. Preferably the pans of one column are also spaced vertically from corresponding pans of the other column. Air is introduced into the top of the chamber and withdrawn from the bottom. The general flow of air is therefore vertical. The effect of the horizontal pans is based on the fact that a gas flowing past the edge of a flat plate that is perpendicular to the flow forms a wave on the upstream side of the plate. Air flows downwardly between the chamber walls and the outer edges of the pan. It also flows downwardly between the inner edges of the pans of the two columns. It has been found that when the air carries aerosol particles, these particles are substantially uniformly distributed throughout the chamber.
REFERENCES:
patent: 3302615 (1967-02-01), Tietje
patent: 3557756 (1971-01-01), Ramsey
patent: 3630174 (1971-12-01), Runkel
patent: 3749061 (1973-07-01), Connelly
patent: 3877420 (1975-04-01), Eagleson, Jr.
patent: 3924571 (1975-12-01), Holman
William I. Gay, Method of Animal Experimentation, 1973, pp. 1-43.
Chamblee Hugh R.
Hauth Joseph J.
Hazleton Systems, Inc.
Sharp Robert Keith
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