The bagless vacuum cleaner was not Dyson's first invention. In 1970, while he was still a student, Dyson co-invented the Sea Truck, a flat-hulled, high-speed watercraft that could land without a harbour or a jetty. Dyson also created the Ballbarrow, a modified wheelbarrow with a ball replacing the wheel, and several similar devices.
Dyson was unable sell his new bagless vacuum cleaner design to an outside manufacturer or find a UK distributer as he originally intended; nobody wanted to rock the huge market for replacement cleaner bags.
Dyson manufactured and distributed his own product and thanks to a brilliant television advertising campaign (Say Goodbye to the Bag) that emphasised the end to replacement bags Dyson sold vacuum cleaners to consumers and sales grew.
However, success often leads to copycats. Other vacuum cleaner manufacturers began to market their own version of a bagless vacuum cleaner. James Dyson had to sue Hoover UK for patent infringement, winning $5 million in damages.