Hinge assembly for supporting a fan on a roof

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 with a spout extending from one side of the fan and the fan being 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 support bar having front and rear support ends diametrically opposed from each other the 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 support bar such that a channel is formed between the at least one tab and the support bar, the at least one tab having an aperture aligned with at least one opening on the 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 such that when secured the spout is directed towards the rear support ends, the support bar further having a rear support aperture positioned towards the rear support end, and further having a middle support aperture positioned along the support bar between the front and rear support ends;
• an adjustable surface mounting section defined by having a surface arm adjustably secured to a mounting bracket, the surface arm having at least one surface opening configured to receive a mounting fastener to secure the surface arm to a surface defined on the vent, roof, or wall, the mounting bracket having front and rear bracket ends diametrically opposed from each other, the mounting bracket further having a front bracket aperture positioned towards the front bracket end and a middle bracket aperture positioned along the mounting bracket between the front and rear bracket ends;
• a first pivot arm pivotally attached at one end to the front bracket aperture and attached at another end to the middle support aperture, and a second pivot arm pivotally attached at one end to the middle bracket aperture and attached at another end to the rear support aperture, and wherein the first pivot arm is longer than the second pivot arm, such that when the first and second pivot arms are connected to both the fan base support bar and the adjustable surface mounting section, the fan base support bar is moveable in relationship to the adjustable surface mounting section;
• and
• each hinge side is thereby configured to be secured to the fan assembly, by securing at least a portion of the fan base in the channel between the at least one tab and the support bar, and fastening the at least one fastener through the opening in the tab through the fan base and into the aligned aperture on the support bar such that the spout on the fan is directed towards the rear support ends, and securing by at least one mounting fastener the adjustable surface mounting section to either a surface of the vent below the fan base or a surface of the roof or wall, such that the fan base and fan are pivotably from an initial resting position over the vent to a cleaning orientation in which the spout is angled into the vent.