The apparatus i.e. lawn mower (1) has a chassis (2), a landing gear (36), a cutting tool (4) i.e. rotary cutter bar (5) with a drive (8), and a cutting tool height adjustment unit (13) for adjusting the height of the cutter bar relative to the chassis. The...

A robotic mower stuck detection system includes a boundary sensor (119) on the robotic mower (100) that senses distance to a boundary wire (103, 104); an accelerometer on the robotic mower (100) that senses contact between the robotic mower (100) and an ob...

A robotic mower housing includes a one piece molded bottom chassis (104) having an inner wall (112) and an outer wall (106). A top cover is removably attached to and covers the bottom chassis (104). An outer seal is provided between the outer wall (106) of...

A height of cut adjustment assembly for a robotic mower (100) includes a height of cut drum (150) secured to a bottom chassis (104) of the robotic mower (100) and having internal spiral threads (148), a motor cup (142) supporting a cutting blade motor (134...

A robotic mower home finding system, including a charging station (105) connected to an outer boundary wire loop (103); a vehicle control unit (101) on the robotic mower (100) that commands a traction drive system to drive the robotic mower (100) along a p...

A charging and control system for a robotic lawnmower, having a circuit loop that includes several wire segments, of which one or more are boundary wire segments that may define or demarcate the boundary of an area within which the lawnmower is permitted t...

A system is employed for defining a position (location) of a receiving element inside an area surrounded by a wire loop, along the perimeter (a perimeter wire loop (28)), of a work area (24) or other bounded area. In particular, the system can determine wh...