MMR's Australian Patent : http://pericles.ipaustralia.gov.au/ols/auspat/pdfSource.do?fileQuery=%97%B0%B4%A8%A2%AA%7C%AB%A0%B9%B8e%A5%A8%AB%A4%AD%A0%AC%A4%7C%80%94qoowqoqsop%80pqoowoupxm%AF%A3%A5e%A3%AE%A6%7C%A3%AE%A6 There are 2 but they seem the same to me