US 12,448,958 B2
Multi-pressure integrated air pump
Zhi Xiong Huang, Fujian (CN); Ying Biao Zhang, Fujian (CN); and Zheng Wen Lin, Fujian (CN)
Assigned to Intex Marketing Ltd., Tortola (VG)
Filed by Intex Marketing Ltd., Tortola (VG)
Filed on May 23, 2023, as Appl. No. 18/200,650.
Application 18/200,650 is a continuation of application No. 16/914,895, filed on Jun. 29, 2020, granted, now 11,686,299.
Claims priority of application No. 201921020161.1 (CN), filed on Jul. 2, 2019; and application No. 201921265055.X (CN), filed on Aug. 6, 2019.
Prior Publication US 2023/0332587 A1, Oct. 19, 2023
Int. Cl. F04B 23/14 (2006.01); F04B 13/00 (2006.01); F04B 23/06 (2006.01); F04B 23/08 (2006.01); F04B 23/10 (2006.01); F04B 35/06 (2006.01); F04B 41/06 (2006.01); F04D 13/06 (2006.01); F04D 13/12 (2006.01); F04D 17/16 (2006.01); F04D 19/04 (2006.01); F04D 25/06 (2006.01); F04D 25/08 (2006.01); F04D 25/16 (2006.01); F04D 27/00 (2006.01); F04D 29/42 (2006.01); F04D 29/50 (2006.01)
CPC F04B 23/14 (2013.01) [F04B 13/00 (2013.01); F04B 23/06 (2013.01); F04B 23/08 (2013.01); F04B 23/106 (2013.01); F04B 35/06 (2013.01); F04B 41/06 (2013.01); F04D 13/068 (2013.01); F04D 13/12 (2013.01); F04D 17/16 (2013.01); F04D 19/046 (2013.01); F04D 25/0666 (2013.01); F04D 25/0673 (2013.01); F04D 25/084 (2013.01); F04D 25/16 (2013.01); F04D 25/166 (2013.01); F04D 27/005 (2013.01); F04D 27/008 (2013.01); F04D 29/4206 (2013.01); F04D 29/503 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A high and low-pressure integrated air pump, comprising:
a housing including an air inlet and an air outlet;
a high-pressure pump disposed within the housing in fluid communication with the air inlet and the air outlet;
a first high-pressure check valve separating the high-pressure pump from the air inlet;
a low-pressure pump disposed within the housing and in fluid communication with the air inlet and the air outlet;
a first low-pressure check valve separating the low-pressure pump from the air outlet; a flow path defined between the first low-pressure check valve and the air outlet which bypasses the high-pressure pump; and
a second high-pressure check valve separating the high-pressure pump from the low-pressure pump.