Method and apparatus for pest deterrence
US6856243B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2004 |
| Grant date | Feb 15, 2005 |
| Priority date | — |
| Expiry date | Feb 6, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01M31/002
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A pest deterrent device attracts the attention of a pest with ultrasonic noise and then produces a series of flashes to drive off the pest. In one embodiment, the device continuously produces ultrasound, changing the ultrasound when a pest is detected. In another embodiment, the device does not produce ultrasound until a pest is detected. In a further embodiment, the flash charging circuit is used to modulate the ultrasound while the flash is operated. In a particular embodiment, four ultrasonic speakers are arranged in a series-parallel configuration with a total capacitance of about 0.2 micro-Farads achieve 120 dB of sound output with a supply voltage of about 12-18 V.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.