US 11,723,503 B2
Robotic cleaner
Margaret Mathieu, East Greenwich, RI (US); and Charles S. Brunner, Stockton, NJ (US)
Assigned to SharkNinja Operating LLC, Needham, MA (US)
Filed by SHARKNINJA OPERATING LLC, Needham, MA (US)
Filed on Jul. 29, 2020, as Appl. No. 16/941,635.
Claims priority of provisional application 62/886,600, filed on Aug. 14, 2019.
Claims priority of provisional application 62/879,822, filed on Jul. 29, 2019.
Prior Publication US 2021/0030227 A1, Feb. 4, 2021
Int. Cl. A47L 9/04 (2006.01); A47L 9/28 (2006.01); A47L 11/282 (2006.01); A47L 11/40 (2006.01)
CPC A47L 9/2847 (2013.01) [A47L 9/0411 (2013.01); A47L 9/0455 (2013.01); A47L 9/0477 (2013.01); A47L 9/0494 (2013.01); A47L 9/2826 (2013.01); A47L 9/2852 (2013.01); A47L 11/282 (2013.01); A47L 11/4011 (2013.01); A47L 11/4041 (2013.01); A47L 11/4058 (2013.01); A47L 11/4061 (2013.01); A47L 2201/04 (2013.01); A47L 2201/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A robotic cleaner comprising:
a chassis;
an agitator assembly configured to engage a surface to be cleaned; and
a lift moveably coupling the agitator assembly to the chassis, the lift including:
a spring configured to generate a biasing force that urges the agitator assembly in a direction away from the surface to be cleaned, the biasing force being insufficient to lift the agitator assembly from the surface to be cleaned;
a top plate;
a bottom plate; and
a plurality of linkages, a first end of each linkage being pivotally coupled to the top plate and a second end of each linkage being slidably coupled to the bottom plate.