WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Search
 
Browse
 
Translate
 
Options
 
News
 
Login
 
Help
 
Machine translation
1. (WO1979000574) A METHOD AND APPARATUS FOR KILLING INSECTS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1979/000574    International Application No.:    PCT/SE1979/000022
Publication Date: 23.08.1979 International Filing Date: 31.01.1979
IPC:
A01M 1/04 (2006.01), A01M 1/22 (2006.01), H05C 3/00 (2006.01)
Applicants:
Inventors:
Priority Data:
7801219 01.02.1978 SE
Title (EN) A METHOD AND APPARATUS FOR KILLING INSECTS
(FR) PROCEDE ET APPAREIL POUR L"ELIMINATION DES INSECTES
Abstract: front page image
(EN)A method and apparatus for killing insects, particularly insects which fly, comprising electrodes (17, 18), between which an electric voltage field is created. The invention also comprises an attractant (19) by which insects are enticed to pass into said field. The voltage field created is of such magnitude that when insects fly through said field a spark is formed between said electrodes may have the form of a multiplicity of wires or rods arranged in mutual, uniform spaced relationship, adjacent electrodes being connectable to opposite poles of a high voltage source (11). The invention further comprises an electronic control means including a detector (2) which is arranged to detect power or energy fluctuations in the voltage field as a result of objects, such as insects, entering said field. A switch (6) is controlled by said control means to automatically interrupt the supply of power to the electrodes when a certain maximum power is reached or exceeded. This interruption in power supply is maintained over a predetermined time with the aid of electronic means (3, 4, 5). These latter means may be operable in respect of short circuits and spark-formations between the electrodes which are of a longer period of time than a given period, and are able to determine the time lapse before the power is re-connected. It is possible in this way to limit the amount of thermal energy which can be accumulated in an insect, a piece of straw or some other object which may have fastened to the electrodes, to a value of such low magnitude that the object in question is unable to glow to burning heat or to ignite. In this way the risk of such an invention being the cause of a fire in the vicinity where it is placed is reduced to a minimum.
(FR)Procede et appareil d"elimination des insectes, en particulier des insectes volants, comprenant des electrodes (17, 18) entre lesquelles on cree un champ electrique. L"invention concerne egalement des moyens pour inciter les insectes a passer dans ledit champ. L"intensite du champ electrique ainsi cree est telle que, lorsque les insectes traversent le champ en volant, une etincelle se produit entre les electrodes et tue l"insecte. Les electrodes peuvent se presenter sous la forme d"une pluralite de fils ou de barreaux regulierement espaces, des electrodes adjacentes pouvant etre reliees a des poles opposes d"une source de haute tension. L"invention concerne egalement des moyens de commande electroniques comprenant un detecteur (2) qui est concu pour detecter des fluctuations d"energie dans le champ electrique dues a la presence d"objets tels que des insectes penetrant dans ce champ. Un interrupteur (6) est commande par lesdits moyens de commande afin d"interrompre l"alimentation des electrodes en energie lorsqu"une energie maximum est atteinte ou depassee. Cet arret de l"alimentation est poursuivi pendant une duree predeterminee a l"aide de moyens electroniques (3, 4, 5). Ces moyens peuvent etre mis en oeuvre en cas de court-circuits et d"amorcages entre les electrodes dont la duree excede une duree determinee et peuvent determiner le temps de retard avant le retablissement de l"alimentation. Il est possible de cette facon de limiter la quantite d"energie thermique qui peut etre accumulee dans un insecte, un morceau de paille ou un autre objet qui serait reste colle aux electrodes, a une valeur suffisamment basse pour que l"objet en question ne brule pas ou ne soit pas incandescent. Ainsi le risque d"incendie est reduit au minimum.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)