US 12,133,623 B2
Surface cleaning apparatus
Tyler Grab, Grand Rapids, MI (US); Jason W. Pruiett, Grand Rapids, MI (US); and Aaron Griffith, Grand Rapids, MI (US)
Assigned to BISSELL Inc., Grand Rapids, MI (US)
Filed by BISSELL Inc., Grand Rapids, MI (US)
Filed on Aug. 5, 2022, as Appl. No. 17/881,654.
Claims priority of provisional application 63/236,794, filed on Aug. 25, 2021.
Prior Publication US 2023/0063470 A1, Mar. 2, 2023
Int. Cl. A47L 9/22 (2006.01); A47L 5/30 (2006.01); A47L 7/00 (2006.01); A47L 9/04 (2006.01); A47L 11/30 (2006.01); A47L 11/40 (2006.01); H02K 5/20 (2006.01); H02K 9/06 (2006.01)
CPC A47L 9/22 (2013.01) [A47L 5/30 (2013.01); A47L 7/0023 (2013.01); A47L 9/0411 (2013.01); A47L 9/0477 (2013.01); A47L 11/302 (2013.01); A47L 11/4016 (2013.01); A47L 11/4041 (2013.01); A47L 11/4069 (2013.01); A47L 11/4083 (2013.01); A47L 11/4088 (2013.01); H02K 5/207 (2021.01); H02K 9/06 (2013.01); H02K 2205/09 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A surface cleaning apparatus, comprising:
a housing comprising a recovery pathway having a dirty inlet and a clean air outlet;
a suction source comprising a vacuum motor in fluid communication with the dirty inlet;
a motor housing enclosing the vacuum motor;
a vacuum motor cooling pathway comprising a first cooling air inlet in fluid communication with ambient air outside the housing and a cooling air outlet, wherein the vacuum motor cooling pathway passes through the motor housing;
a brush motor;
a brushroll operably coupled to and driven by the brush motor; and
a brush motor cooling pathway comprising a second cooling air inlet in fluid communication with ambient air outside the housing;
wherein the brush motor cooling pathway merges with the vacuum motor cooling pathway before the vacuum motor cooling pathway exits the motor housing, such that heated cooling air from the brush motor and the vacuum motor is exhausted together through the cooling air outlet; and
wherein the brush motor cooling pathway is isolated from the recovery pathway.