Walk power mower with transmission providing both forward and reverse propulsion

A walk-behind power equipment unit comprising:

• a housing supported upon a surface, the housing configured to traverse the surface in both a forward direction and an opposite, reverse direction;
• an electric motor associated with the housing, the electric motor configured to provide power to a tool connected to the housing during operation of the power equipment unit;
• a bidirectional, variable speed traction drive system carried by the housing;
• and
• a control system comprising:
• a handle grip operatively communicating with the traction drive system and movable relative to a handle member extending from the housing, wherein the handle grip is configured to activate the traction drive system to propel the housing:
• in the forward direction when the handle grip is moved in a first direction;
• and in the reverse direction when the handle grip is moved in a second direction opposite the first direction;
• and
• a sensor associated with one or both of the handle grip and the handle member, wherein the sensor is configured to produce an electrical signal upon movement of the handle grip relative to the handle member, and wherein the electrical signal is configured to generate a corresponding command signal to the traction drive system.