US 11,771,286 B2
Carpet extractor
Tom Minh Nguyen, Grand Rapids, MI (US)
Assigned to BISSELL Inc., Grand Rapids, MI (US)
Filed by BISSELL Inc., Grand Rapids, MI (US)
Filed on Oct. 14, 2021, as Appl. No. 17/501,422.
Application 15/085,444 is a division of application No. 13/578,960, granted, now 9,380,921, issued on Jul. 5, 2016, previously published as PCT/US2011/024741, filed on Feb. 14, 2011.
Application 17/501,422 is a continuation of application No. 17/174,883, filed on Feb. 12, 2021, granted, now 11,166,610.
Application 17/174,883 is a continuation of application No. 17/089,140, filed on Nov. 4, 2020, granted, now 10,980,386, issued on Apr. 20, 2021.
Application 17/089,140 is a continuation of application No. 15/903,233, filed on Feb. 23, 2018, granted, now 10,827,894, issued on Nov. 10, 2020.
Application 15/903,233 is a continuation of application No. 15/250,203, filed on Aug. 29, 2016, granted, now 9,918,604, issued on Mar. 20, 2018.
Application 15/250,203 is a continuation of application No. 15/085,444, filed on Mar. 30, 2016, abandoned.
Claims priority of provisional application 61/304,625, filed on Feb. 15, 2010.
Prior Publication US 2022/0061620 A1, Mar. 3, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A47L 11/30 (2006.01); A47L 11/40 (2006.01); A47L 11/34 (2006.01); A47L 11/32 (2006.01); G06Q 90/00 (2006.01); A47L 9/04 (2006.01)
CPC A47L 11/302 (2013.01) [A47L 11/32 (2013.01); A47L 11/34 (2013.01); A47L 11/4005 (2013.01); A47L 11/408 (2013.01); A47L 11/4016 (2013.01); A47L 11/4025 (2013.01); A47L 11/4041 (2013.01); A47L 11/4044 (2013.01); A47L 11/4069 (2013.01); A47L 11/4083 (2013.01); A47L 11/4088 (2013.01); A47L 11/4091 (2013.01); G06Q 90/00 (2013.01); A47L 9/0477 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A surface cleaning apparatus, comprising:
a housing comprising a base assembly for movement across a surface to be cleaned and a handle assembly pivotally coupled to the base assembly;
a recovery system including a suction source, the suction source located within the base assembly, the suction source defining a working air path through the housing from a suction inlet to a working air path exhaust;
an agitator;
an agitator motor located within the base assembly, the agitator motor operably coupled to the agitator and adapted to provide a driving force to the agitator; and
a cooling airflow path through the base assembly and configured to cool the agitator motor, the cooling airflow path fluidly coupled to ambient air upstream of the agitator motor and fluidly coupled downstream of the agitator motor to the working air path, the cooling airflow path coupled to the working air path prior to the working air path entering the suction source.