US 12,480,501 B2
Knob for 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 Aug. 23, 2024, as Appl. No. 18/813,150.
Application 18/813,150 is a division of application No. 18/542,504, filed on Dec. 15, 2023.
Prior Publication US 2025/0198413 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)] 20 Claims
OG exemplary drawing
 
1. A pool pump comprising:
a body comprising an impeller;
an inlet for receiving a fluid;
an outlet for supplying a portion of the fluid;
a chamber configured to receive an air portion and a liquid portion of the fluid;
an exhaust plug mechanically connected to a top cover, wherein the top cover comprises a knob; and
a seal configured to seal against a sealing surface of the top cover to seal the chamber when the knob rotates a predetermined amount into a closed configuration;
wherein the exhaust plug and the seal travel upward when the knob rotates into the closed configuration.