Pressure relief door for air duct work

A pressure relief door system for use in a duct for relieving positive or negative pressure within the duct includes a frame to be mounted in the duct; a gasket in the frame; a hinged door mounted on the frame and sealing against the gasket; and an adjustable pressure relief mechanism normally holdi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	ROGGE TIMOTHY J
Format:	Patent
Sprache:	eng
Schlagworte:	ACTUATING-FLOATS AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING BLASTING COCKS DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING LIGHTING MECHANICAL ENGINEERING RANGES TAPS TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS THERMAL INSULATION IN GENERAL VALVES VENTILATING WEAPONS
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Beschreibung
Zusammenfassung:	A pressure relief door system for use in a duct for relieving positive or negative pressure within the duct includes a frame to be mounted in the duct; a gasket in the frame; a hinged door mounted on the frame and sealing against the gasket; and an adjustable pressure relief mechanism normally holding the hinged door against the gasket and permitting the hinged door to open in response to a positive or negative pressure change. The frame and door can be mounted such that the door opens either outwardly from the duct in response to excess positive pressure or inwardly into the duct in response to excess negative pressure. The adjustable pressure relief mechanism may be magnetic.