For instance, Lock 8 is a guard lock near the south end of the Welland Canal at Port Colborne, Ontario, Canada. Due to the large expanse of shallow water in Lake Erie, changes in wind direction and force create water level changes as great as 11 feet at Port Colborne. Lock 8 controls the water level in the canal, keeping it independent of the fluctuations of Lake Erie, but still allowing ships to enter Lake Erie regardless of its level.
WIPO ASSIGNS PATENT TO SHANGHAI ONE TOP, CHANG, JASON TSUNG-CHIH FOR "ELECTRIC CONTROL LOCK OVERCOMING PRE-PRESSURE WITH MOMENTUM GENERATED BY ENERGY STORED IN PRE-PRESSURING" (CHINESE INVENTOR)
Jun 15, 2011; GENEVA, June 15 -- Publication No. WO/2011/066782 was published on June 09. Title of the invention: "ELECTRIC CONTROL LOCK...