US 9,807,930 B1
Blade guard for a robot lawnmower
Peter J. Lydon, Peabody, MA (US); and Brian W. Doughty, Framingham, MA (US)
Assigned to iRobot Corporation, Bedford, MA (US)
Filed by iRobot Corporation, Bedford, MA (US)
Filed on Aug. 25, 2016, as Appl. No. 15/246,947.
Int. Cl. A01D 34/00 (2006.01); A01D 34/81 (2006.01); A01D 34/82 (2006.01); A01D 34/66 (2006.01)
CPC A01D 34/828 (2013.01) [A01D 34/008 (2013.01); A01D 34/66 (2013.01); A01D 34/81 (2013.01)] 24 Claims
OG exemplary drawing
 
1. An autonomous robot lawnmower comprising:
a chassis;
a drive supporting the chassis above a lawn and configured to maneuver the robot lawnmower about the lawn;
a motorized lawn cutting assembly comprising one or more blades;
a first blade guard spring-mounted to a first lateral side of the robot lawnmower and extending toward the lawn, the first blade guard being movable toward the one or more blades of the cutting assembly such that a portion of the first blade guard is positioned between a first portion of the one or more blades of the cutting assembly and the lawn when an inwardly directed force is applied to the first blade guard; and
a second blade guard spring-mounted to a second lateral side of the robot lawnmower and extending toward the lawn, the second blade guard being movable toward the one or more blades of the cutting assembly such that a portion of the second blade guard is positioned between a second portion of the one or more blades of the cutting assembly and the lawn when an inwardly directed force is applied to the second blade guard.