Title: Animal enclosure with pressure controlled ventilation inlet and deflection means

Abstract: Proper ventilation is achieved by exhaust fans which draw fresh air into the building through an inlet duct. The inlet opening is adjustable by a valve movable between generally open and closed positions and a movable deflector controls the direction of flow in accordance with the rate of flow to achieve even circulation. The valve and deflector position are controlled by an actuator responsive to the pressure differential between the inside and outside of the building. Preferably, the inlet opening is a longitudinal slot extending the length of the building along each side at the ceiling and the exhaust fans are positioned at the floor. Preferably, a louver in front of the opening controls the effective size of the opening and the deflection angle of flow into the building.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Van Huis, Robert L. (Zeeland, MI, US)

Application Number: 449625
Filing Date: 1974-03-11
Publication_date: 1976-02-17
Assignee: U. S. Industries, Inc. (New York, NY)
Primary Class(es): 454/238 119/448, 251/279, 454/255, 454/284
Other Classes:
US Patent Ref:

2995077	Aug, 1961	Kitson	98/33.
3000290	Sep, 1961	Rodick et al.	98/40.
3515052	Jun, 1970	Brandes	98/40.
3601030	Aug, 1971	Bryant	98/32.
3611906	Oct, 1971	Lorenz	98/33.
3706271	Dec, 1972	Meiczkowski	98/33.

Other Refs: 1,172,225

Nov, 1969	UK

Primary Examiner: Wayner, William E.
Assistant Examiner:
Attorney: Price, Heneveld, Huizenga & Cooper