US Patent 8430711 Infant play gym

An infant play gym including a mat, a first arched structure extending over the mat, a second arched structure extending over the mat, and a motion module. The motion module includes a housing couplable to both the first arched structure and the second arched structure, a power source, and a motor positioned within the housing and powered by the power source, the motor operable to cause the first and second arched structures to move with respect to one another.