GB1453103A - Apparatus for generating and radiating ultrasonic soundwaves for the control of pests - Google Patents

Apparatus for generating and radiating ultrasonic soundwaves for the control of pests

Info

Publication number
GB1453103A
GB1453103A GB1112774A GB1112774A GB1453103A GB 1453103 A GB1453103 A GB 1453103A GB 1112774 A GB1112774 A GB 1112774A GB 1112774 A GB1112774 A GB 1112774A GB 1453103 A GB1453103 A GB 1453103A
Authority
GB
United Kingdom
Prior art keywords
oscillator
piezoelectric element
reflector dish
circuit
transistor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1112774A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sierra Research Corp
Original Assignee
Sierra Research Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sierra Research Corp filed Critical Sierra Research Corp
Priority to GB1112774A priority Critical patent/GB1453103A/en
Publication of GB1453103A publication Critical patent/GB1453103A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0644—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element
    • B06B1/0655—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element of cylindrical shape

Abstract

1453103 Animal scares SIERRA RESEARCH CORP 13 March 1974 11127/74 Heading A1E [Also in Divisions H3 and H4] Apparatus for generating and radiating ultrasonic sound, e.g. for disturbing pests such as rodents, uses a piezoelectric element 20 (Figs. 1, 3) having opposite main electrodes 27, 28 and a feedback electrode 29. An inductance 60 forms with the capacity between electrodes 27, 28 a tuned circuit. An oscillator 38, 40 (as described a Darlington oscillator) is coupled across the element 20. The feedback electrode 29 of piezoelectric element 20 is coupled to the control electrode of transistor 38 regeneratively to sustain oscillations of the oscillator 38, 40. The oscillator is switched on and off at intervals of about one second by a square wave circuit in the form of an integrated circuit 34 which controls the oscillator 38, 40 through a drive transistor 36. The frequency radiated is about 19, 20, 22 or 24 KHz and is determined by choice of the element 20. Several adjacent units as described may be provided and different frequencies in adjacent units produce beat frequencies having high peak powers. Different frequencies at independently controlled rates are particularly effective. The timing of the on/off square wave is determined by the value of resistor 42. A neon lamp 72 in parallel with the piezoelectric element 20 is illuminated by power from the resonant circuit and also indicates failure of the apparatus. The apparatus is suspended by a wire 10 from the ceiling. A cylindrical housing 12 contains circuit components and supports a reflector dish 14 having a guard grille 16. The piezoelectric element 20 is located on the reflector dish 14 and is held by three nylon clamps (25) Fig. 2 (not shown) having interposed rubber cushions (26). The power transistor 40 of the oscillator is in heat sink relationship with the reflector dish 14 and is central relative to element 20. An on/off pull cord 18 and switch (15) are provided. The neon lamp 72 is within the reflector dish 14.
GB1112774A 1974-03-13 1974-03-13 Apparatus for generating and radiating ultrasonic soundwaves for the control of pests Expired GB1453103A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1112774A GB1453103A (en) 1974-03-13 1974-03-13 Apparatus for generating and radiating ultrasonic soundwaves for the control of pests

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1112774A GB1453103A (en) 1974-03-13 1974-03-13 Apparatus for generating and radiating ultrasonic soundwaves for the control of pests

Publications (1)

Publication Number Publication Date
GB1453103A true GB1453103A (en) 1976-10-20

Family

ID=9980536

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1112774A Expired GB1453103A (en) 1974-03-13 1974-03-13 Apparatus for generating and radiating ultrasonic soundwaves for the control of pests

Country Status (1)

Country Link
GB (1) GB1453103A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2286710A (en) * 1993-12-14 1995-08-23 Daka Dev Limited Pest control device
CN111713484A (en) * 2020-07-29 2020-09-29 张露 Intelligent mouse trap

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2286710A (en) * 1993-12-14 1995-08-23 Daka Dev Limited Pest control device
CN111713484A (en) * 2020-07-29 2020-09-29 张露 Intelligent mouse trap

Similar Documents

Publication Publication Date Title
US3879702A (en) Ultrasonic rodent control
GB1128560A (en) Oscillatory circuits for electro-acoustic converters
US4669424A (en) Apparatus for and method of repelling pests such as fleas and ticks
FI93678C (en) Acoustic device for controlling fish behavior
ATE4662T1 (en) LOW FREQUENCY SOUNDER.
DE3877250T2 (en) POWER SUPPLY.
MX9206923A (en) METHOD AND APPARATUS FOR ADJUSTING VEHICLE HORNS
US3315102A (en) Piezoelectric liquid cleaning device
US3277465A (en) Electrically operated audible alarm
US4163966A (en) Rodent repellor
US4816144A (en) Sieving apparatus
GB1453103A (en) Apparatus for generating and radiating ultrasonic soundwaves for the control of pests
US4023162A (en) Electronic buzzer
ES2124795T3 (en) SURFACE SOUND WAVE OSCILLATOR CONTROLLED BY TENSION.
SE9001916L (en) FAKOEMULGERINGSOMVANDLARE
ATE52205T1 (en) TRIGGER CIRCUIT FOR PIEZOELECTRIC SOUNDERS.
US3138795A (en) Electronic audible horn
JPH0232289Y2 (en)
KR910001025Y1 (en) An ultransonic generator
WO1987001888A1 (en) Electronic pest repelling apparatus and method
US2476607A (en) Tone frequency oscillator
KR0123638Y1 (en) Circuit of electric fan having a function of expelling insects
JPS56121112A (en) Resonant vibrator
GB1258770A (en)
KR820002033Y1 (en) Supersonics waves device ridding of rat

Legal Events

Date Code Title Description
PS Patent sealed