# US 11,076,580 B2 · Variable dimension poultry feeder > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,076,580 B2 - Document ID: US11076580B2 - Status: Granted - Kind: B2 - Application number: 16/124,683 - Filed: 2018-09-07 - Published: 2020-03-12 - Granted: 2021-08-03 - Earliest claimed: 2018-09-07 - Assignees: Butterfly Concepts LLC - Applicants: Philippe Plouzen - Inventors: Philippe Plouzen - Web page: https://patentgrep.com/patent/US11076580B2 ## CPC - A01K 39/0125: {Panfeeding systems; Feeding pans therefor} - A01K 39/00: Feeding or drinking appliances for poultry or other birds - A01K 39/01: Feeding devices (A01K39/04 takes precedence) - A01K 39/012: filling automatically {, e.g. by gravity from a reserve} - A01K 39/014: Feed troughs; Feed throwers - A01K: ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS ## Abstract A feed hopper with two chute members is provided. The chutes are movable with respect to one another and one chute has an extending lip to engage the inner surface of the other chute to prevent feed from escaping the hopper. ## Claims ### Claim 1 A poultry feeder comprising: a first tray member having a first base; and a second tray member having a second base with an inner end portion and a lip connected to the inner end portion, the lip extending downwardly from the inner end portion at an angle of between about 25° and about 35°, the first tray member and the second tray member adjacent one another and movable with respect to one another thereby together defining a size-adjustable tray, the lip of the second tray member engaging the first base of the first tray member to assist in preventing feed from escaping the tray. ### Claim 2 (depends on 1) The poultry feeder of claim 1, wherein the lip is disposed in a substantially flat plane and has an end edge in the plane. ### Claim 3 A poultry feeder comprising: a tray comprising a first wall and a second wall together defining a feed retaining region, the first wall and the second wall movable with respect to each other, the second wall including a lip that engages the first wall both when the first wall and the second wall are stationary with respect to each other and when one of the first wall and the second wall is moved with respect to the other, thereby keeping feed retained in the tray; wherein the second wall has an inner end portion from which the lip extends, wherein the lip extends downwardly between about 25° and about 35° with respect to the inner end portion. ### Claim 4 (depends on 3) The poultry feeder of claim 3, and further including a lead member depending from the first wall and defining an inner edge of the first wall. ### Claim 5 (depends on 3) The poultry feeder of claim 3, wherein the first wall has a curvature. ### Claim 6 (depends on 5) The poultry feeder of claim 5, wherein the second wall has a curvature. ### Claim 7 (depends on 6) The poultry feeder of claim 6, wherein the first wall and the second wall are rotatable with respect to each other about a pivot. ### Claim 8 (depends on 4) The poultry feeder of claim 4, wherein the lead member extends less than the full length of the first wall. ### Claim 9 A poultry feeder comprising: a first tray member having a first base; and a second tray member having a second base disposed along an arc of a cylinder, and a lip extending from the second base in a direction not along an arc of the cylinder, the first tray member and the second tray member adjacent one another and movable with respect to one another together through a range of motion during which a portion of the second tray member is above a portion of the first tray member, the lip of the second tray member engaging the first base of the first tray member through the range of motion; wherein the second base has an inner end portion from which the lip extends, wherein the lip extends downwardly between about 25° and about 35° with respect to the inner end portion. ### Claim 10 (depends on 9) The poultry feeder of claim 9, further comprising a lead member extending from the first base, at least a portion of the lead member having a lead member thickness which is less than that of the thickness of the first base. ### Claim 11 A poultry feeder comprising: a first tray member having a first base with an upper surface; and a second tray member having a second base, the second tray member including a lip downwardly extending from the second base, the first tray member and the second tray member movable with respect to one another through a range of motion with the second base being above the first base through the range of motion, thereby together defining a size-adjustable tray, the lip of the second tray member engaging the upper surface of the first base of the first tray member continuously through the range of motion to assist in preventing feed from escaping the tray; wherein the second base has an inner end portion from which the lip extends, wherein the lip extends downwardly between about 25° and about 35° with respect to the inner end portion. ### Claim 12 (depends on 11) The poultry feeder of claim 11, wherein the first base of the first tray member has a curvature. ### Claim 13 (depends on 12) The poultry feeder of claim 12, wherein the second base of the second tray member has a curvature. ### Claim 14 (depends on 11) The poultry feeder of claim 11, wherein the first tray member and the second tray member are rotatably movable with respect to each other about a pivot. ### Claim 15 (depends on 11) The poultry feeder of claim 11, wherein the first base has an inner edge and a lead member extending downwardly from the first base. ### Claim 16 (depends on 11) The poultry feeder of claim 11, the first tray member further including a first wall connected to the first base. ### Claim 17 (depends on 16) The poultry feeder of claim 16, the second tray member further including a second wall connected to the second base. ### Claim 18 (depends on 15) The poultry feeder of claim 15, wherein the lead member at least partially has a smaller thickness than the thickness of the first base.