US 11,839,344 B2
Sound reducing vacuum cleaner
Jonathan M. Mantes, Franklin, WI (US); Anthony R. Sleck, Lisbon, WI (US); Fraizier Reiland, Milwaukee, WI (US); and Zachary Self, Nashotah, WI (US)
Assigned to MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed by MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed on Aug. 29, 2019, as Appl. No. 16/554,849.
Claims priority of provisional application 62/724,852, filed on Aug. 30, 2018.
Prior Publication US 2020/0069126 A1, Mar. 5, 2020
Int. Cl. A47L 9/00 (2006.01); A47L 5/36 (2006.01); A47L 9/24 (2006.01); A47L 9/10 (2006.01)
CPC A47L 9/0081 (2013.01) [A47L 9/009 (2013.01); A47L 9/10 (2013.01); A47L 9/248 (2013.01); A47L 5/365 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A vacuum cleaner comprising:
a suction inlet providing entrance of a suction airflow;
a suction source, the suction source operable to generate the suction airflow through the suction inlet;
a diffuser in fluid communication with the suction source for diffusing the suction airflow, the diffuser including a circumferential opening surrounding the suction source such that the suction airflow travels through the opening into the diffuser;
a blower port in fluid communication with the diffuser for exhausting the suction airflow, the blower port positioned on one side of the opening;
a duct downstream of the blower port along the suction airflow, the duct including an outlet positioned on another side of the opening, such that the opening is positioned horizontally between the horizontal positions of the blower port and the outlet, and
the duct is a generally U-shaped duct extending between the blower port and the outlet, the entirety of the generally U-shaped duct located at a height above the blower port; and
a cap removably coupled to the blower port such that at least a portion of the suction airflow exhausts through the blower port when the cap is removed and when the cap is coupled to the blower port the suction airflow travels through the duct and exhausts through the outlet.