Patent ID: 8778042
Filing Date: 2014-07-15
Classification: A47L,F24F,Y10T

Abstract:
1. A duct filter retainer used in connection with a wall or ceiling heating and air conditioning vent, the duct filter retainer comprising: a filter body constructed of a filter material, the filter body is substantially flat when no debris is retained in the filter body, the filter body is disposed outside the wall or ceiling heating and air conditioning vent, the filter body is configured to deform in a direction outward from the wall or ceiling vent into a room in fluid communication with the vent to define a volume based on debris retained by the filter body; and an attachment assembly connected to the filter body configured to directly attach to a vent cover, a wall parallel to the vent cover, or a ceiling parallel to the vent cover over at least an exterior portion of the wall or ceiling heating and air conditioning vent and retain the filter body in an airtight fashion against the wall or ceiling heating and air conditioning vent, the attachment assembly is further configured to remain attached to the wall or ceiling by having an attachment strength greater than a sum of force from gravity on the duct filter retainer, force from gravity on debris retained in the filter body, and force from air conveyed through the wall or ceiling heating and air conditioning vent.