US 11,925,142 B2
Electric motor and blade assembly for a lawn mower
Matthew P. Schuller-Rach, Kaukauna, WI (US); Joshua R. Wilson, Random Lake, WI (US); Michael J. Holeton, Kaukauna, WI (US); and Brent P. Berglund, Brillion, WI (US)
Assigned to Ariens Company, Brillion, WI (US)
Appl. No. 17/767,830
Filed by Ariens Company, Brillion, WI (US)
PCT Filed Sep. 18, 2020, PCT No. PCT/US2020/051385
§ 371(c)(1), (2) Date Apr. 8, 2022,
PCT Pub. No. WO2021/071652, PCT Pub. Date Apr. 15, 2021.
Claims priority of provisional application 62/914,115, filed on Oct. 11, 2019.
Prior Publication US 2023/0231436 A1, Jul. 20, 2023
Int. Cl. A01D 34/73 (2006.01); A01D 34/78 (2006.01); A01D 69/02 (2006.01); F16C 19/06 (2006.01); H02K 5/173 (2006.01); H02K 7/08 (2006.01); H02K 21/22 (2006.01); A01D 34/66 (2006.01); A01D 101/00 (2006.01)
CPC A01D 34/78 (2013.01) [A01D 34/733 (2013.01); A01D 69/02 (2013.01); F16C 19/06 (2013.01); H02K 5/1735 (2013.01); H02K 7/085 (2013.01); H02K 21/22 (2013.01); A01D 34/66 (2013.01); A01D 2101/00 (2013.01); F16C 2310/00 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An electric motor for a lawn mower comprising:
a spindle housing having a bore with a spindle clearance opening;
an upper housing coupled to an upper portion of the spindle housing;
a stator positioned within the upper housing;
a spindle shaft extending vertically through the bore of the spindle housing, the spindle shaft having an upper spindle shaft portion and a lower spindle shaft portion;
a rotor coupled to the stator within the upper housing and coupled to the spindle shaft for rotation of the spindle shaft;
an upper bearing supporting the upper spindle shaft portion in the rotor;
a lower bearing supporting the lower spindle shaft portion;
a lower bearing carrier mounted to the spindle housing and supporting the lower bearing proximate to the spindle clearance opening;
a blade adapter coupled for co-rotation with the lower spindle shaft portion;
a bearing debris guard coupled for co-rotation with the spindle shaft, the bearing debris guard positioned around the lower bearing, the lower bearing carrier, and a portion of the blade adapter to protect the lower bearing from debris; and
a blade coupled to the blade adapter with a blade mounting fastener.