The WINDWORKER was patented in Australia and overseas.

Patent Australia Patent USA
Patent Australia Patent USA

The following international patents were cited during examination.

English 1869 English 1894 English 1952
English 1869 English 1894 English 1952

French 1909
French 1909

USA 1904 USA 1920
USA 1904 USA 1920

USA 1935 USA 1943
USA 1935 USA 1943

It can be seen that not only roof ventilators but also chimney cowls were cited as having some resemblance to the WINDWORKER.

Windworker Inventor, Ross A. Bolton
Windworker Inventor
Ross A. Bolton

Whilst the venturi principle has been used for considerable time, the WINDWORKER met all the provisions for patent acceptance - novel, new and unique.


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