A rotary position sensor senses rotation of a first member, having a first torque coupling surface, about an axis relative to a second member by sensing movement of a torque receiving component of the rotary. The isolator may include a mount, a linkage and a torsion spring. The linkage is to be coupled to the torque receiving component of the rotary sensor. The linkage has a second torque coupling surface separable from the first torque coupling surface by a play gap, wherein during rotation of the first member, the first torque coupling surface is to contact the second torque coupling surface to transmit torque to the linkage. The torsion spring is captured between the mount and the linkage independent of the torque receiving component to resiliently bias the second torque coupling surface through the play gap and into engagement with the first torque coupling surface.

A rotary position sensor senses rotation of a first member, having a first torque coupling surface, about an axis relative to a second member by sensing movement of a torque receiving component of the rotary. The isolator may include a mount, a linkage and a torsion spring. The linkage is to be coupled to the torque receiving component of the rotary sensor. The linkage has a second torque coupling surface separable from the first torque coupling surface by a play gap, wherein during rotation of the first member, the first torque coupling surface is to contact the second torque coupling surface to transmit torque to the linkage. The torsion spring is captured between the mount and the linkage independent of the torque receiving component to resiliently bias the second torque coupling surface through the play gap and into engagement with the first torque coupling surface.

A rotary position sensor senses rotation of a first member, having a first torque coupling surface, about an axis relative to a second member by sensing movement of a torque receiving component of the rotary. The isolator may include a mount, a linkage and a torsion spring. The linkage is to be coupled to the torque receiving component of the rotary sensor. The linkage has a second torque coupling surface separable from the first torque coupling surface by a play gap, wherein during rotation of the first member, the first torque coupling surface is to contact the second torque coupling surface to transmit torque to the linkage. The torsion spring is captured between the mount and the linkage independent of the torque receiving component to resiliently bias the second torque coupling surface through the play gap and into engagement with the first torque coupling surface.

A rotary position sensor senses rotation of a first member, having a first torque coupling surface, about an axis relative to a second member by sensing movement of a torque receiving component of the rotary. The isolator may include a mount, a linkage and a torsion spring. The linkage is to be coupled to the torque receiving component of the rotary sensor. The linkage has a second torque coupling surface separable from the first torque coupling surface by a play gap, wherein during rotation of the first member, the first torque coupling surface is to contact the second torque coupling surface to transmit torque to the linkage. The torsion spring is captured between the mount and the linkage independent of the torque receiving component to resiliently bias the second torque coupling surface through the play gap and into engagement with the first torque coupling surface.

A robotic work tool system may include a robotic work tool. The robotic work tool may include two front wheels and a chassis. The robotic work tool is characterized in that the two front wheels are arranged on a beam axle that is pivotably arranged to the chassis.

A robotic work tool system may include a robotic work tool. The robotic work tool may include two front wheels and a chassis. The robotic work tool is characterized in that the two front wheels are arranged on a beam axle that is pivotably arranged to the chassis.

A robotic work tool system (200) comprising a robotic work tool (100), said robotic work tool (100) comprising two front wheels (130) and a chassis (140), wherein said robotic work tool is characterized in that the two front wheels (130) are arranged on a beam axle (145) being pivotably arranged to the chassis (140).