Powered rotating display in a hat

Pat. US 5088127. A hat having an electric motor driven rotatable display placard affixed to the top exterior of the hat. The driving motor of the placard is powered by a photovoltaic panel attached to the exposed surface of the hat. An electrically conductive circuit connects the photovoltaic panel to the motor. The placard is imprinted with written or graphic advertisements or symbols, and is rotated to attract greater attention.

Ultimo aggiornamento: 2014/08/25