Fishing – trapping – and vermin destroying – Traps – Insect
Patent
1993-11-17
1995-06-20
Rosenbaum, Mark
Fishing, trapping, and vermin destroying
Traps
Insect
43114, A01M 104, A01M 114
Patent
active
054251974
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a device for trapping flying insects and similar small pests, more especially to such a device having an attractant radiation source and an adhesive surface.
A device having a sticky trapping surface and a light source is described in DE-OS 2610191. In that device, the trapping surface may either be the surface of a plate of transparent material, one edge of the plate being illuminated by the light source, or it may be the outer surface of a hollow cylinder of transparent material with the light source positioned within it.
Another trap having a light source and an adhesive surface is described in U.S. Pat. No. 4117624. That device comprises an ultraviolet light source partially surrounded by a detachable reflector-holder, in which may be positioned a disposable reflector having a sticky reflective surface. The reflector holder is detachable from the device and, when it is detached, the adhesive reflector may be replaced without contacting it directly, for example, by pushing it from the holder with a new reflector.
Another device incorporating replaceable reflectors and a ultraviolet light source is described in DE-PS 3810065, the light source in that device being mounted on a hinge so that it may be swung away from the reflector to facilitate the replacement of an old reflector by a new one.
Such insect traps have been proposed as alternatives to the commonly used devices incorporating combinations of ultraviolet-light attractants and high voltage grids because of the disadvantages inherent in the latter. These include the danger to domestic animals, which necessitates the placement of the devices in elevated locations that in turn renders servicing difficult, and the unpleasant noises and smells when insects hit the grids, together with a risk of contamination in, for example, food processing areas, caused by the break up of insects. Furthermore, very small insects, for example, fruit flies, often pass safely through the grid, and the device is therefore largely ineffective against such insects.
Previously proposed devices having light sources and adhesive surfaces have, however, themselves suffered various disadvantages. One such disadvantage is the adverse effect of ultraviolet light on the adhesive. When the light is from a ultraviolet source emitting radiation of a wavelength in the region of 315 to 430 nm, especially about 360 nm (a range that has proved most effective in attracting insects), it is found that the adhesive, which must be tacky to be effective, is cured by such radiation and loses its tack after a relatively short period, so that the adhesive surface must then be replaced.
Further, although the devices described in U.S. Pat. No. 4117624 and DE-PS 3810065 mentioned above have been designed with a view to facilitating the replacement of the adhesive sheet, frequent replacement is necessary if an unpleasant appearance is to be avoided, and may still be a somewhat distasteful procedure.
There accordingly remains a need for an insect trapping device in which a fresh adhesive surface can readily be provided.
The present invention accordingly provides a device for trapping flying insects, which device comprises a substrate, first and second storage means for the substrate, a radiation source, and an exposure zone in which radiation emitted from the source is incident upon a portion of the substrate, the first storage means being arranged to store a supply of the substrate from which successive portions can be advanced to the exposure zone, the second storage means being arranged to store successive portions of the substrate withdrawn from the exposure zone, and the arrangement being such that radiation emitted from the source is reflected from the portion of the substrate in the exposure zone, and/or is transmitted through that portion, so as attract insects onto it, and at least a part of the surface area of that portion is adhesive so that insects attracted by the radiation adhere thereto, and wherein the device also comprises advancing means for drawing successi
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patent: 4052811 (1977-10-01), Shuster
patent: 4117624 (1978-10-01), Phillips
patent: 4127961 (1978-12-01), Phillips
patent: 4425733 (1984-01-01), Ammon et al.
patent: 4985302 (1991-01-01), Zucchiatti
Elpel Jeanne M.
Rentokil Limited
Rosenbaum Mark
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