ULTRASONIC PEST REPELLER AND A METHOD OF USING THE ULTRASONIC PEST REPELLER

Patentradars sammanfattning

Repello AB's invention is a pest repeller unit in which a piezoelement is mounted inside an enclosed cavity within a housing, with the cavity's opening oriented perpendicular (±45°) to the piezoelement's surface normal and parallel (±45°) to its main extension direction. This geometric relationship, combined with opening width ≤λ/4 and a center-to-opening-midpoint distance of n/4λ (n = odd integer), enables acoustic amplification up to 110 dB at 1 m. A frequency generator drives chirp sweeps between two frequencies to prevent pest habituation, and multi-unit arrangements at 90–180° angular offsets extend spatial coverage.

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