Clearing precipitation
AssigneeEchoVista GmbH
InventorsDavid Robert Murray Trevett, Patrick Naven Trevett
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Abstract
A method of clearing precipitation from a surface of a window comprises ultrasonically vaporizing the precipitation. A vehicle windscreen, for example, has transducers distributed around the edge and bonded to the windscreen to insonify it. The transducers are energized by a drive system.
Claims19
A method of clearing precipitation from a surface of a window, the method comprising ultrasonically vaporizing the precipitation using an ultrasonic wave produced by one or more piezoelectric transducers distributed around one or more edges of the window, wherein the one or more piezoelectric transducers insonify the window with the ultrasonic wave, wherein ultrasonic wave is one or more of a surface wave, a Rayleigh wave and a Lamb wave having a frequency in the range 0.5 to 5 MHz.
An apparatus for clearing precipitation from a surface of a window, the apparatus comprising:
- from the surface of the sheet
- one or more piezoelectric transducers configured to be distributed around one or more edges of the window, wherein the one or more piezoelectric transducers are configured produce an ultrasonic wave to insonify the window with the ultrasonic wave to ultrasonically vaporize the precipitation, wherein the ultrasonic wave is one or more of a surface wave, a Rayleigh wave and a Lamb wave having a frequency in the range 0.5 to 5 MHz.
Dependencies are inferred from the claim text.