The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 17, 2012
Filed:
May. 14, 2004
Kemal Ajay, Mount Waverley, AU;
Arjun Vinoo Caprihan, Saint Helena, AU;
Michael Rezny, Mount Waverley, AU;
Kemal Ajay, Mount Waverley, AU;
Arjun Vinoo Caprihan, Saint Helena, AU;
Michael Rezny, Mount Waverley, AU;
Vision Fire & Security Pty Ltd, Victoria, AU;
Abstract
A method for the determination of the time of flight of a signal transmitted between a transmitter () and a receiver (). In one form, the method involves transmitting a first signal and a second signal having a waveform modification introduced at a predetermined point in time of the duration of the second signal; receiving said first and second transmitted signals; determining a point of diversion between the first and second received signals to determine an arrival time of the introduced waveform feature modification at the receiver. In addition, the invention provides an accurate time of flight determination of ultrasonic signals in a flow sensor () adapted for a smoke detector system ().