# US 2019/0376709 A1 · Automatic foundation vent plug with manual override > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0376709 A1 - Document ID: US20190376709A1 - Status: Published application - Kind: A1 - Application number: 16/428,729 - Filed: 2019-05-31 - Published: 2019-12-12 - Earliest claimed: 2018-06-07 - Assignees: Air Vent, Inc. - Applicants: Air Vent, Inc. - Inventors: Richard Fieldhouse - Web page: https://patentgrep.com/patent/US20190376709A1 ## CPC - F24F 11/0001: {for ventilation (F24F11/30 takes precedence)} - F24F 13/1413: {using more than one tilting member, e.g. with several pivoting blades (F24F13/15 takes precedence)} - F24F 13/1426: {characterised by actuating means} - F24F 2013/144: {with thermoactuators} - 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 A housing with a top wall, a bottom wall, left end wall, right end wall, and a front cover each having a plurality of openings; a louver connector in a first opening of a first louver and a second opening of a second louver and connected to a third louver that extends between the left end wall and an interior wall (the louvers each being pivotally mounted); a connector attached to the third louver that receives a tab end of a bi-coil that is thermally activated to move the third louver to an open or closed position and the louver connector moves the first louver and the second louver to a corresponding position; and a manual override lever that moves the second louver to an open or closed position and the louver connector moves the first louver and the third louver to a corresponding position. ## Claims ### Claim 1 An automatic foundation vent plug with manual override, the automatic foundation vent plug with manual override comprising: a housing, the housing having a top wall and a bottom wall extending substantially parallel to one another and a left end wall and a right end wall extending substantially parallel to one another and a front cover extending between the top wall, the bottom wall, the left end wall and the right end wall and a plurality of openings in the front cover, the top wall, bottom wall, the left end wall and the right end wall; a louver connector; a first louver extending between the left end wall and the right end wall with a left end protrusion pivotally mounted in the left end wall a right end protrusion pivotally mounted in the right end wall and the first louver having a first opening that accepts a portion of the louver connector; a second louver extending between the left end wall and the right end wall with a left end protrusion pivotally mounted in the left end wall and a right end protrusion pivotally mounted in the right end wall and the second louver having a second opening that accepts a portion of the louver connector; a third louver shorter in length than then first louver and the second louver and extending between the left end wall and an interior wall and having a left end protrusion pivotally mounted in the left end wall; a connector attached to the third louver above the interior wall, wherein the connector receives a tab end of a bi-coil that is pivotally mounted in the right end wall, wherein the louver connector is attached to the third louver at a left side of the third louver, wherein the bi-coil is thermally activated to move the third louver to an open or closed position and the louver connector moves the first louver and the second louver to a corresponding position; and a manual override lever with a push end, a middle portion and a louver end, wherein the louver end is communication with the second louver to move the second louver to an open or closed position and the louver connector moves the first louver and the third louver to a corresponding position. ### Claim 2 (depends on 1) An automatic foundation vent plug with manual override as in claim 1, further comprising: at least two tabs in the left end wall and at least two tabs in the right end wall; and an internal flange to receive the at least two tabs in the left end wall and at least two tabs in the right end wall. ### Claim 3 (depends on 2) An automatic foundation vent plug with manual override as in claim 2, wherein the internal flange is installed in an existing foundation vent of a building. ### Claim 4 (depends on 1) An automatic foundation vent plug with manual override as in claim 1, wherein the protrusions are split circle shaped protrusions. ### Claim 5 (depends on 1) An automatic foundation vent plug with manual override as in claim 1, wherein the plurality of openings in the front cover, the top wall, bottom wall, the left end wall and the right end wall are substantially rectangular shaped. ### Claim 6 (depends on 1) An automatic foundation vent plug with manual override as in claim 1, further comprising a plurality of stability protrusions on an outer portion of the top wall, the bottom wall, the left end wall and the right end wall. ### Claim 7 (depends on 1) An automatic foundation vent plug with manual override as in claim 1, wherein the middle portion of the manual override lever is contained in a slot opening of the front cover. ### Claim 8 (depends on 1) An automatic foundation vent plug with manual override as in claim 1, further comprising a screen parallel to the front cover and extending between the top wall, the bottom wall, the left end wall and the right end wall. ### Claim 9 (depends on 1) An automatic foundation vent plug with manual override as in claim 1, wherein the bi-coil is further comprised of a center spool that is pivotally mounted in an circular opening in the right end wall. ### Claim 10 (depends on 1) An automatic foundation vent plug with manual override as in claim 1, wherein the first louver has a substantially straight upper leg portion with a curved L shaped end, a middle portion with the protrusion and a curved lower leg portion having a upper portion and a curved lower portion. ### Claim 11 (depends on 10) An automatic foundation vent plug as in claim 10, wherein the substantially straight upper leg portion is spaced apart from and runs substantially parallel to the upper portion of the curved lower leg portion. ### Claim 12 (depends on 1) An automatic foundation vent plug with manual override as in claim 1, wherein the second louver has a substantially straight upper leg portion with a curved L shaped end, a middle portion and a substantially straight lower leg portion with a return leg. ### Claim 13 (depends on 12) An automatic foundation vent plug as in claim 12, wherein the substantially straight upper leg portion is spaced apart from and runs substantially parallel to the substantially straight lower leg portion and the return leg is substantially perpendicular to the substantially straight lower leg portion. ### Claim 14 (depends on 13) An automatic foundation vent plug as in claim 13, wherein the louver end of the manual override lever is communication with the second louver with a substantially triangular shaped support portion of the manual override lever. ### Claim 15 (depends on 1) An automatic foundation vent plug with manual override as in claim 1, wherein the third louver has a substantially straight upper leg portion having a connector along a mid-section of the substantially straight upper leg portion and a curved L shaped end, a middle portion and a substantially straight lower leg portion with a return leg. ### Claim 16 (depends on 10) An automatic foundation vent plug with manual override as in claim 10, wherein the first opening in the first louver is in the substantially straight upper leg portion with a curved L shaped end. ### Claim 17 (depends on 16) An automatic foundation vent plug with manual override as in claim 16, wherein the first opening and the second opening are substantially rectangular shaped. ### Claim 18 (depends on 12) An automatic foundation vent plug with manual override as in claim 12, wherein the second opening in the second louver is in the substantially straight upper leg portion with a curved L shaped end. ### Claim 19 (depends on 1) An automatic foundation vent plug with manual override as in claim 1, wherein the manual override lever in an open or closed position renders the bi-coil inoperative. ### Claim 20 (depends on 1) An automatic foundation vent plug with manual override as in claim 1, the louver connector having three protrusions.