# US 10,502,450 B2 · Insulated cover for whole-house fan > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,502,450 B2 - Document ID: US10502450B2 - Status: Granted - Kind: B2 - Application number: 15/384,890 - Filed: 2016-12-20 - Published: 2017-07-13 - Granted: 2019-12-10 - Earliest claimed: 2016-01-08 - Assignees: Air Vent, Inc. - Applicants: Air Vent, Inc. - Inventors: Robert B. Holland; Grayson M. Griffin - Web page: https://patentgrep.com/patent/US10502450B2 ## CPC - F04D 25/14: and having shutters, e.g. automatically closed when not in use - F24F 13/20: Casings or covers - F04D 29/325: {for axial flow fans (blade mountings F04D29/34, blades F04D29/38)} - F04D 29/522: {especially adapted for elastic fluid pumps} - F24F 7/013: using wall or window fans, displacing air through the wall or window - F24F 2013/205: {Mounting a ventilator fan therein} - F24F 2013/242: {Sound-absorbing material} - F24F 2221/14: mounted on the ceiling - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) - F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02) ## Abstract An insulated cover for a whole-house fan includes a base defining an opening for disposal over the whole-house fan, and first and second, oppositely disposed, ceiling doors each hingedly connected to the base. In a closed configuration the ceiling doors each sit at an acute angle with respect to a horizontal plane corresponding with a bottom surface of the base. The base and ceiling doors are formed from thermal insulation board. ## Claims ### Claim 1 An insulated cover for a whole-house fan, comprising: a base defining an opening for disposal over the whole-house fan; and first and second, oppositely disposed, ceiling doors each hingedly connected to the base, wherein in a closed configuration the ceiling doors each sit at an acute angle with respect to a horizontal plane corresponding with a bottom surface of the base, wherein the base and ceiling doors are formed from thermal insulation board, springs configured to assist the ceiling doors in opening when the whole-house fan is on and to provide resistance against the ceiling doors returning from an open configuration to the closed configuration when the whole-house fan is off, the resistance being insufficient to prevent the ceiling doors from returning to the closed configuration under load of the weight of the doors when the whole-house fan is off wherein the base is connected to the ceiling doors by hinged brackets. ### Claim 2 (depends on 1) The insulated cover of claim 1, wherein the thermal insulation board has an R-value of at least 4.2. ### Claim 3 (depends on 2) The insulated cover of claim 2, wherein the insulation board has a radiant barrier sheet disposed thereon and facing an interior of the insulated cover. ### Claim 4 (depends on 1) The insulated cover of claim 1, wherein the base comprises first and second side walls positioned opposite one another, and front and rear walls positioned opposite one another and connected to the first and second side walls, wherein the front and rear walls each have an upper surface having first and second sloped portions extending towards a center of the upper surface and on which the ceiling doors sit when in the closed configuration. ### Claim 5 (depends on 1) The insulated cover of claim 1, wherein the hinged brackets are configured to restrict the ceiling doors from opening beyond 90° from horizontal plane. ### Claim 6 (depends on 5) The insulated cover of claim 5, wherein the hinged brackets are configured to restrict the ceiling doors from opening to 90° from the horizontal plane. ### Claim 7 (depends on 1) The insulated cover of claim 1, wherein the springs are torsional springs and wherein each hinged bracket includes a respective torsional spring configured to assist the ceiling doors in opening when the whole-house fan is on and to provide resistance against the ceiling doors returning from the open configuration to the closed configuration when the whole-house fan is off. ### Claim 8 (depends on 1) The insulated cover of claim 1, wherein the hinged brackets comprise four hinged brackets each disposed at a respective corner of the cover, wherein the base comprises first and second side walls positioned opposite one another, and front and rear walls positioned opposite one another and connected to the first and second side walls, and wherein each hinged bracket includes a lower bracket component configured to connect one of the side walls with one of the front or rear walls, and an upper bracket component coupled to the lower bracket component by a hinge and to one of the ceiling doors. ### Claim 9 (depends on 8) The insulated cover of claim 8, wherein the springs are torsional springs and wherein each hinged bracket includes a respective torsional spring configured to assist the ceiling doors in opening when the whole-house fan turns on and to provide resistance against the ceiling doors transitioning from the open configuration to the closed configuration when the whole-house fan turns off. ### Claim 10 (depends on 8) The insulated cover of claim 8, wherein each hinged bracket includes a removable locking pin disposed within a knuckle of the hinge and coupling first and second leaf components of the hinge together. ### Claim 11 A kit for use in assembling an insulated cover for a whole-house fan, comprising: first and second thermal insulation board ceiling doors; first and second thermal insulation board side walls; front and rear thermal insulation board walls; four lower hinged bracket components; four upper hinged bracket components; four locking pins for coupling the upper hinged bracket components to the lower hinged bracket components; and springs configured to, after assembly of the insulated cover, assist the ceiling doors in opening when the whole-house fan is on and to provide resistance against the ceiling doors returning from an open configuration to a closed configuration when the whole-house fan is off, the resistance being insufficient to prevent the ceiling doors from returning to the closed configuration under load of the weight of the doors when the whole-house fan is off. ### Claim 12 (depends on 11) The kit of claim 11, wherein the upper hinged bracket components are coupled to the ceiling doors and the lower hinged bracket components are coupled to either the first and second thermal insulation board side walls or the front and rear thermal insulation board walls. ### Claim 13 (depends on 11) The kit of claim 11, wherein the springs comprises four torsional springs. ### Claim 14 (depends on 11) The kit of claim 11, wherein the thermal insulation board ceiling doors, thermal insulation board side walls, and the front and rear thermal insulation board walls are formed from thermal insulation board having an R-value of at least 4.2. ### Claim 15 (depends on 13) The kit of claim 13, wherein the front and rear thermal insulation board walls each have an upper surface having first and second sloped portions extending to a center of the upper surface. ### Claim 16 A method of insulating a whole-house fan, comprising the steps of: providing an insulated cover, the insulated cover comprising: a base defining an opening for disposal over the whole-house fan; and first and second ceiling doors each hingedly connected to the base, wherein in a closed configuration the ceiling doors each sit at an acute angle with respect to a horizontal plane corresponding with a bottom surface of the base, wherein the base and ceiling doors are formed from thermal insulation board; and disposing the insulated cover over the whole-house fan, whereby the ceiling doors are forced open from the closed configuration to an open configuration by air flow from the whole-house fan when the whole house fan turns on and return to the closed configuration to form an insulated cover around the whole-house fan when the whole-house fan turns off, wherein the insulated cover includes springs configured to assist the ceiling doors in opening when the whole-house fan is on and to provide resistance against the ceiling doors returning from the open configuration to the closed configuration when the whole-house fan is off, the resistance being insufficient to prevent the ceiling doors from returning to the closed configuration under load of the weight of the doors when the whole-house fan is off wherein the base is connected to the ceiling doors by hinged brackets. ### Claim 17 (depends on 16) The method of claim 16, wherein the thermal insulation board has an R-value of at least 4.2 and has a radiant barrier sheet disposed thereon and facing an interior of the insulated cover. ### Claim 18 (depends on 16) The method of claim 16, wherein the springs are torsional springs and wherein each hinged bracket includes a respective torsional spring configured to assist the ceiling doors in transitioning from the closed configuration to the open configuration when the whole-house fan is turned on and to provide the resistance against the ceiling doors moving from the open configuration to the closed configuration when the whole-house fan is turned off. ### Claim 19 (depends on 18) The insulated cover of claim 18, wherein the hinged brackets are configured to restrict the ceiling doors from opening to 90° from the horizontal plane. ### Claim 20 (depends on 1) The insulated cover for a whole-house fan of claim 1, wherein torque exerted by the springs is less than torque generated by the weight of the ceiling doors when moving from the open position to the closed position. ### Claim 21 (depends on 1) The insulated cover for a whole-house fan of claim 1, wherein the insulated cover is installed over a whole-house fan, the whole-house fan being installed in an attic of a structure over an opening in a ceiling to draw air into the attic from an occupied space of the structure. ### Claim 22 (depends on 21) The insulated cover for a whole-house fan of claim 21, wherein a motor of the whole-house fan is disposed on an attic-side of the whole-house fan.