US 12,332,322 B2
Appliance with integrated ground fault detection
Damian Howard, Winchester, MA (US)
Assigned to SharkNinja Operating LLC, Needham, MA (US)
Filed by SHARKNINJA OPERATING LLC, Needham, MA (US)
Filed on Jul. 15, 2020, as Appl. No. 16/929,594.
Claims priority of provisional application 62/874,354, filed on Jul. 15, 2019.
Prior Publication US 2021/0018572 A1, Jan. 21, 2021
Int. Cl. G01R 31/52 (2020.01); A47J 43/046 (2006.01); H02H 3/16 (2006.01)
CPC G01R 31/52 (2020.01) [H02H 3/167 (2013.01); A47J 43/046 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An appliance, the appliance comprising:
a blender base comprising a receptacle, the receptacle being configured to removably receive a blender jar;
a first ground plane disposed on an external surface of the blender base, the first ground plane being disposed at least partially in the receptacle;
a second ground plane defined by an external surface of the blender jar, the second ground plane being electrically coupled to the first ground plane to define a ground plane interface when the blender jar is disposed in the receptacle; and
a ground fault (GF) detection circuit configured to detect a ground fault event in response to a current in the ground plane interface and output an electrical signal indicating the ground fault event, wherein the GF detection circuit is configured for high-side current sensing whereby at least the first ground plane couples between a supply rail and a load of the appliance.