Hinge assembly for supporting a fan on a roof

Abstract

A jack hinge assembly attaches to a roof or wall vent to hold the fan in a proper position, yet permits the fan to be easily moved for cleaning of vent and the fan.

We claim: 
     
         1 . A mounting hinge assembly used in combination with a fan assembly positioned on a roof or wall, the fan assembly being defined by a fan secured to a fan base that is positionable over a vent on the roof or wall, the mounting hinge assembly provides for an easy cleaning and servicing procedure for both the fan and the vent on the roof or wall, the mounting hinge assembly comprising:
 a pair of hinge sides, each hinge side including:
 a fan base support bar extending from a front support bar edge to rear support bar edge that is diametrically opposed from the front support bar edge, the fan base support bar further including an upper edge and a lower portion, the lower portion having at least one tab extending outwardly and upwardly towards the upper edge and being opposed to the fan base support bar such that a channel is formed between the at least one tab and the fan base support bar, the at least one tab having an aperture aligned with at least one opening on the fan base support bar, and at least one fastener configured to be inserted through the at least one aligned aperture and opening capturing a portion of the fan base resting in the channel; 
 a vent base secured to a portion of the vent and having a front base edge and a rear base edge; 
 threaded opening members secured to the front base edge and secured to the front support bar edge; 
 a jack screw threaded through the threaded opening members, wherein rotation of the jack screw causes the fan base support bar to move away from the vent such that the fan assembly opens.