US Patent 11597640 Lift device with user contact sensor

A lift device includes a chassis, a platform configured to support a user, a lift assembly coupling the platform to the chassis, an actuator configured to at least one of (a) move the platform relative to the chassis or (b) propel the chassis, a sensor assembly, and a controller. The sensor assembly includes a bar including a first end portion coupled to the platform and a second end portion opposite the first end portion. The sensor assembly further includes a sensor coupled to the platform and configured to provide a signal in response to the second end portion of the bar contacting the sensor. The controller is operatively coupled to the sensor and the actuator and configured to control the actuator based on the signal from the sensor.