US 12,419,274 B1
Centrifugal pump pet water fountain
Kevin Michael Sayers, Knoxville, TN (US); Cody Lee Stricklin, Knoxville, TN (US); Anita Rechelle White, Knoxville, TN (US); Jonathan William Huber, Knoxville, TN (US); Marc Edward Brush, Knoxville, TN (US); Eric Alexander Ward, Knoxville, TN (US); and Grant Matthew Given, Knoxville, TN (US)
Assigned to Radio Systems Corporation, Knoxville, TN (US)
Filed by Radio Systems Corporation, Knoxville, TN (US)
Filed on Nov. 3, 2023, as Appl. No. 18/386,676.
Application 18/386,676 is a division of application No. 17/219,549, filed on Mar. 31, 2021, granted, now 11,825,822.
Application 17/219,549 is a continuation in part of application No. 16/561,607, filed on Sep. 5, 2019, granted, now 11,470,813, issued on Oct. 18, 2022.
Claims priority of provisional application 62/727,225, filed on Sep. 5, 2018.
Int. Cl. A01K 7/02 (2006.01); C02F 1/28 (2023.01); C02F 103/20 (2006.01)
CPC A01K 7/02 (2013.01) [C02F 1/283 (2013.01); C02F 2103/20 (2013.01); C02F 2301/04 (2013.01); C02F 2307/10 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A pet water fountain filter ring comprising: an annular exterior housing having an interior wall with a plurality of water entrance openings and an exterior wall with a plurality of water exit openings, the interior wall and the exterior wall forming a filter channel therebetween, and an annular water filtering media positioned within the filter channel of the exterior housing; and wherein the interior wall has a plurality of inwardly extending projections.