US 12,290,223 B2
Floor cleaning apparatus and liquid delivery assembly for use in floor cleaning apparatus
Sven Eschrich, Hong Kong (HK); Kin Wong Yau, Hong Kong (HK); and Heung Kin Chan, Hong Kong (HK)
Assigned to Tung Hing Plastic Manufactory Limited, Hong Kong (HK)
Filed by Hayco Manufacturing Limited, Hong Kong (HK)
Filed on Jun. 12, 2023, as Appl. No. 18/333,464.
Application 18/333,464 is a continuation in part of application No. 17/347,478, filed on Jun. 14, 2021, granted, now 11,805,957.
Prior Publication US 2024/0407624 A1, Dec. 12, 2024
Int. Cl. A47L 13/22 (2006.01); A47L 11/40 (2006.01)
CPC A47L 13/22 (2013.01) [A47L 11/4083 (2013.01); A47L 11/4088 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A floor cleaning apparatus comprising a cleaning head portion for engaging a floor surface during cleaning, an upstanding portion for maneuvering movement of said cleaning head portion, a liquid delivery assembly, a handle portion extending from said upstanding portion and a sealed liquid storage container, wherein said cleaning head portion includes a first nozzle and a second nozzle for discharging of cleaning detergent therefrom, wherein said liquid delivery assembly includes:
a needle defining a first passageway and a second passageway separated from the first passageway,
a first chamber, the first passageway allowing fluid communication between said sealed liquid storage container and said first chamber,
a second chamber situated adjacent said first chamber,
a first conduit allowing liquid to exit from said second chamber to said first nozzle for discharge,
a third chamber situated adjacent said first chamber, the second passageway allowing gaseous communication between said third chamber and said sealed liquid storage container,
an inlet allowing surrounding air or gas to enter said third chamber and then said liquid storage container,
a fourth chamber situated adjacent said first chamber, and
a second conduit allowing liquid to exit from said fourth chamber to said second nozzle for discharge.