US 12,480,499 B2
Automatic exhaust mechanism
Jin Huan Jin, Hong Kong (HK)
Assigned to Belgravia Wood Limited, Central (HK)
Filed by Belgravia Wood Limited, Hong Kong (HK)
Filed on Dec. 15, 2023, as Appl. No. 18/542,504.
Prior Publication US 2025/0198411 A1, Jun. 19, 2025
Int. Cl. F04D 15/00 (2006.01); F04D 1/04 (2006.01); F04D 13/06 (2006.01); F04D 29/00 (2006.01); F04D 29/08 (2006.01); F04D 29/66 (2006.01)
CPC F04D 15/0005 (2013.01) [F04D 1/04 (2013.01); F04D 13/06 (2013.01); F04D 29/007 (2013.01); F04D 29/086 (2013.01); F04D 29/669 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A pool pump comprising:
a body comprising an impeller;
a pump inlet for receiving a fluid from a pool;
a pump outlet for supplying a portion of the fluid to the pool;
a chamber defined by a buoy room cover configured to receive an air portion of the fluid and a liquid portion of the fluid;
a buoy within the chamber configured to fall when the liquid portion within the chamber is below a first level; and
a buoy room valve connected to the buoy room cover and configured to allow the air portion and the liquid portion to enter the chamber;
wherein the buoy room valve comprises at least one outlet and when the air portion enters the chamber, the at least one outlet is sealed by a plate of the buoy room valve.