Vermin Destroying Patents (Class 43/124)
  • Patent number: 5402597
    Abstract: A novel method for repelling rodents such as rats and mice is provided, including the step of placing an effective amount of camomile in an area where rodents are not desired.
    Type: Grant
    Filed: July 30, 1993
    Date of Patent: April 4, 1995
    Inventor: Wlodek J. Lech
  • Patent number: 5394641
    Abstract: An animal blockage device having a series of casings movably surrounding a support member to prevent squirrels or other animals from traveling up the support member.
    Type: Grant
    Filed: June 24, 1993
    Date of Patent: March 7, 1995
    Inventor: Philip C. Danca
  • Patent number: 5394643
    Abstract: A process for the destruction of nest-building, tunnel digging, and other ground animal pests, includes the step of providing a container containing carbon dioxide, wherein the carbon dioxide is in a liquid form under high pressure. Very cold carbon dioxide gas from the container is introduced into the nest, tunnel or ground via a conduit, thereby to form carbon dioxide snow in the nest, tunnel or ground. The carbon dioxide snow is permitted to sublimate slowly over time, thereby to form carbon dioxide gas in situ and at low pressure in the nest, tunnel or ground at a depth below that of the air in the immediate vicinity of the pests so that the carbon dioxide drives such air upwardly at least partially from such depth into other areas of the nests, tunnels or the atmosphere above the ground so that substantially all of the pests rapidly suffocate.
    Type: Grant
    Filed: November 5, 1993
    Date of Patent: March 7, 1995
    Assignee: Proteco AG
    Inventor: Hans-Bernd Schmittmann
  • Patent number: 5394642
    Abstract: A retrofittable insecticide distribution system comprising an above ground horizontal pipe (20) having a plurality of vertical pipes (30) penetrating into the ground. Fluid absorbing means (56) in housings (50) are provided around the ends of horizontal and vertical members and communicate with the horizontal pipes or a vertical pipe. Insecticide can be introduced into the system either by pumping or by being placed in an elevated reservoir (90) with gravity providing the pumping force. The vertical pipes in the ground can be provided with a variety of distribution means, including simple holes, a downwardly oriented sprinkler head (42) or a distribution ball (44) having a plurality of slots (46) filled with plastic beads (48).
    Type: Grant
    Filed: October 5, 1993
    Date of Patent: March 7, 1995
    Inventor: Toshio Takaoka
  • Patent number: 5390440
    Abstract: An apparatus and a method for eliminating termites, roaches and other insects from homes by injecting the ground with uniform amounts of exterminating fluid. To be effective in eliminating these pests and to meet state environmental regulatory laws, it is important that the right quantity of exterminating fluid be injected. This invention provides a means for electronically recording the time length of an initial injection and by audible tones advise the user when an identical time length has elapsed on subsequent injections. By use of this timing mechanism, the user can be assured that a uniform amount of exterminating fluid has been injected with each use of this exterminating fluid injector.
    Type: Grant
    Filed: November 1, 1993
    Date of Patent: February 21, 1995
    Inventor: Patrick M. Mihealsick
  • Patent number: 5378086
    Abstract: A system to exterminate and control subterranean termites and other subterranean pests inhabiting a subterranean area surrounding or in close proximity to a structure having a perimeter near ground level and support pads includes a plurality of first pipes, a plurality of second pipes, a source of steam, a plurality of temperature sensors, a temperature display and a controller. Each pipe has a plurality of holes in its sidewall. The first and second pipes are disposed beneath ground level along the perimeter of the structure and along its support pads, respectively. The source of steam is fluidly coupled to the pipes. Each temperature sensor is disposed adjacent to one of the pipes. The temperature sensors generate temperature signals. The temperature display displays a temperature reading of the temperature adjacent to each pipe in response to the temperature signals. The controller regulates pressure and/or temperature of the source of steam in response to the temperature signals.
    Type: Grant
    Filed: September 15, 1993
    Date of Patent: January 3, 1995
    Inventors: Albert E. Campbell, Jr., Charles F. Stevenson
  • Patent number: 5365692
    Abstract: Disclosed is a method for killing animal pests infesting a water-bearing product and including placing the product in a chamber having at least some oxygen therewithin and reducing the pressure in the chamber below atmospheric pressure. The improvement comprises the steps of reducing the pressure in the chamber at least to the boiling point of the water in the product so that oxygen in the chamber is displaced by water vapor until the chamber is substantially oxygen depleted. The oxygen depleted condition is maintained for the "time of lethality," i.e. for a time at least equal to the time required for a pest to be killed in an oxygen-depleted environment. Specific aspects of the new method also involve using inert gas and a poison gas fumigant.
    Type: Grant
    Filed: May 7, 1993
    Date of Patent: November 22, 1994
    Assignee: KGK Ecosystems, Inc.
    Inventor: Keith W. Gustafson
  • Patent number: 5361533
    Abstract: A device for injecting a pesticide from an exposed area to a concealed area behind a wall is disclosed. The device includes a plug which is permanently secured to an opening in the wall. A spray tube extends through the plug from the exposed area into the concealed area. A hose is removably connectable at one end to the spray tube from the exposed area. The hose is connectable at an opposite end to the outlet of a remote pesticide container, thus allowing a remote pesticide container to be used to spray pesticide into the concealed area.
    Type: Grant
    Filed: August 26, 1993
    Date of Patent: November 8, 1994
    Inventor: Douglas D. Pepper
  • Patent number: 5359805
    Abstract: A rat guard method consists of covering an article to be protected with a sheet made of a flexible material such as a synthetic resin sheet, and covering the sheet with a freely bendable net which is formed by connecting links made of a rigid material such as aluminum freely movably to one another in a two-dimensional pattern, so that the article to be protected can be easily protected from harm by rats.
    Type: Grant
    Filed: August 10, 1993
    Date of Patent: November 1, 1994
    Assignee: Kabushiki Kaisha Okanishi
    Inventor: Iwao Kadokura
  • Patent number: 5353544
    Abstract: A fumigation apparatus is provided which uses mixed gas of hydrogen phosphide and methyl bromide, said mixed gas containing hydrogen phosphide at a high concentration, and which is free from the risk of ignition and safe. The apparatus, furthermore, is capable of fumigation that can completely kill noxious insects infesting green plants within a short time, exhibiting very little phytotoxicity on the plants and leaving extremely little residual fumigating agent after fumigation. Said apparatus is composed of (a) a system for purging air and hydrogen phosphide in a hydrogen phosphide path; (b) a system for hydrogen phosphide supply and transfer from a hydrogen phosphide bomb to a mixer through a humidifier; (c) a system for methyl bromide supply and transfer from a methyl bromide bomb to the mixer; and (d) a system for transferring the mixed gas from the mixer to a fumigation chamber.
    Type: Grant
    Filed: December 14, 1992
    Date of Patent: October 11, 1994
    Assignee: Teijin Chemicals Ltd.
    Inventors: Teruyuki Tsutsumi, Tetsunori Sato, Akira Arita
  • Patent number: 5353543
    Abstract: A device for deterring bird intrusion to a space includes permanent magnets mounted on a carrier supported at the space to be protected, the carrier being supported to be rotatable so the that by rotation of same, the bird deterring magnetic field established has intensity and/or orientation change, this with employment of a field with induction of abnormally high gauss level, creates a condition highly physiologically discomforting to a bird encountering the field and such much so that the bird leaves the space area and/or its environs.
    Type: Grant
    Filed: February 10, 1993
    Date of Patent: October 11, 1994
    Inventor: Katsumi Teraoka
  • Patent number: 5349778
    Abstract: A method and apparatus is disclosed for using sub-freezing cold air and hot air generated from a vortex tube to exterminate pests, mildews or tumors. According to the method and apparatus of the present invention, compressed air is fed into vortex tube to generate a stream of cold air with sub-freezing temperature and a stream of hot air of elevated temperature. These jets of cold and hot air are then delivered to infested places to either cool down or heat up to temperatures lethal to undesirable organisms. Since only compressed air is used in operation, there is no adverse impact on the environment.
    Type: Grant
    Filed: April 26, 1993
    Date of Patent: September 27, 1994
    Inventor: Cheng Chu
  • Patent number: 5347749
    Abstract: A system for reapplication of termiticide substance to the fill dirt underlying the foundation slab of a building at potential termite entry points is installed prior to pouring the slab. The system has a single, endless unbranched emitter circuit of apertured, flexible tubing, disposed upon the fill dirt at the perimeter edges of the slab and around the openings in the slab where bundles of utility connections penetrate the slab. The emitter circuit is fed by a redundancy of open-ended unperforated trunk lines, connected to the emitter circuit at spaced apart intervals, to equalize distribution of termiticide to all soil areas adjacent the emitter circuit, the despite possible breaks or clogging in one or more trunk lines or in the emitter circuit. The trunk lines run from the emitter circuit under the slab, are bundled, and run through a single channel drilled horizontally through a foundation block, to the outside of an exterior wall of the building.
    Type: Grant
    Filed: February 24, 1993
    Date of Patent: September 20, 1994
    Assignee: Pestban Pest Control of Florida, Inc.
    Inventors: Kenneth Chitwood, Richard Knipp, Richard Schmitt
  • Patent number: 5339564
    Abstract: A method for the control and destruction of agricultural pest organisms comprising generating a selected EM radiation at a plurality of different frequencies, pulse widths, and intensities for application on pest organisms, coupling the EM radiation to selected cellular organelles, organelle membranes, or cell membranes of the pest organism, disrupting an ionic balance within the cellular organelles, organelle membranes, or cell membranes, and initiating an increase in cation concentration within the membranes or organelles. The cation concentration is sustained until the pest organism is destroyed. A system and apparatus are also disclosed where an oscillator operably coupled to a broad band linear amplifier generate selected EM radiation frequencies to be applied to pest organisms. The oscillator is preferably a frequency-hopping RF oscillator and is communicatively linked to an antenna coupled to a reflector and shield for focusing the EM radiation.
    Type: Grant
    Filed: November 16, 1993
    Date of Patent: August 23, 1994
    Inventors: Steve D. Wilson, William L. Clarke
  • Patent number: 5337513
    Abstract: The invention comprises a physical barrier which deters the entrance of snails and slugs into an enclosed area. In preferred embodiments, the barrier is a treated rigid edging (such as fencing, or benderboard of wood or plastic) or a treated flexible edging (such as a tape). The edging material has an exposed surface (e.g., at or above the soil level) which includes a particulate copper material in a polymeric matrix.
    Type: Grant
    Filed: August 14, 1992
    Date of Patent: August 16, 1994
    Assignee: Harvey Universal, Inc.
    Inventors: Larry Harvey, William Sheaffer, Robert Staniec, Malcolm McLean
  • Patent number: 5329726
    Abstract: A system for termite detection and control is provided by a subterranean bait station having a perforated outer housing permanently implanted in the terrain below ground level, and a perforated cartridge removably received within the housing. The openings in the housing and the cartridge are in alignment with each other when the cartridge is fully received within the housing in its operational position. The cartridge received within the housing will initially contain a non-toxic bait material for diagnosing or assessing the level of a termite infestation; the bait cartridge is periodically removed from the housing to inspect for termite activity. If termite activity is detected, the non-toxic bait cartridge is replaced in the housing with a correspondingly perforated pesticide-containing bait cartridge for extermination of termites.
    Type: Grant
    Filed: September 8, 1992
    Date of Patent: July 19, 1994
    Inventors: Barbara L. Thorne, James F. A. Traniello
  • Patent number: 5325626
    Abstract: A device for the eradication of fire ants includes a reservoir for the introduction of liquid insecticide, a conduit that transports liquid insecticide from the reservoir to a dispersion manifold, and a pointed tip to facilitate pushing the device into the ground. The manifold has a main passage in fluid communication with the interior of the conduit and a plurality of lateral holes in communication with the main passage that lead to the exterior surface of the manifold. The exterior surface of the manifold has an annular channel where the holes emerge from the manifold to space the holes apart from the dirt of the wall of the bore hole formed as the device is pushed into the ground. This gap helps to keep the holes free of dirt and soil particles so the pesticide can flow freely from the device. The reservoir is sized to hold an effective amount of insecticide, approximately one quart or more.
    Type: Grant
    Filed: May 28, 1993
    Date of Patent: July 5, 1994
    Inventor: Robert L. Jackson
  • Patent number: 5319878
    Abstract: The extermination of imported fireants is accomplished by a process in which water, heated to a temperature in the range of 200 212.degree. F., is applied by impulse inundation within the central core region of a fireant mound, initiated below ground level, continuing as the probe is inserted to a lowermost region, and thereafter continuing as the probe is withdrawn, and repeating the process from different angles and orientations.
    Type: Grant
    Filed: April 9, 1993
    Date of Patent: June 14, 1994
    Inventors: Daniel Moffett, Robert E. Fitzgerald
  • Patent number: 5317831
    Abstract: A termite protection system (10) for a wooden foundation structure (12) is disclosed having a plurality of perimeter pipe sections (34) which include integral nozzles orifices (66), and a plurality of interior pipes (38) with non-integral nozzles (44), for distributing a delivering termite control fluids. The pipes (34) and (38) each have a plurality of male ends (50) which can be permanently inserted into a female end (48) of another pipe (34) or (38) or accessory fittings such as "T" fittings (40) and elbow fittings (32). Longitudinal ridges (56) and (58) within each of the male ends (50) fit into receiver grooves (62) in each of the female ends (48) as an aid to orientation of the (34) and (38) and other components. The female ends (48) have interior locking teeth (64) for locking into ridge indentations (60) on the male sections (50) such that components snap together and cannot be easily disassembled.
    Type: Grant
    Filed: November 5, 1992
    Date of Patent: June 7, 1994
    Inventor: Robert A. Fletscher
  • Patent number: 5309669
    Abstract: An extermination system provides for the introduction of insecticide within the wall cavities of a building to provide for effective extermination of insects nesting in and passing through the wall cavities. The system includes fittings which are installed through a panel or surface of the wall and which provide a passage to the wall cavity. The fitting passage is adapted to receive the outlet of an insecticide supply device, which can be an aerosol can, whereupon an insecticide can be injected directly into the wall space to exterminate insects within the wall space. Insecticide supply devices suitable for use with the invention are also disclosed. The invention provides an effective extermination system which will reduce the exposure of the occupants of the building to insecticide.
    Type: Grant
    Filed: October 15, 1991
    Date of Patent: May 10, 1994
    Assignee: Insider Products, Inc.
    Inventor: John C. Jackson
  • Patent number: 5255896
    Abstract: There is disclosed an electric fence for chasing away pigeons or the like undesired birds. The fence comprises a series of spaced posts made of electrically insulating material, each post having a flat top end cut across by a groove having a depth of predetermined size and formed with a tapped hole adjacent to the groove. An electric wire, having a positive section, extends successively through the grooves of the posts, this wire having a diameter greater than the predetermined sized above mentionned so as to projecting out of the grooves. Screws are provided which have threaded stems and flat heads, the stems being screwed to one of the tapped holes. The screws heads have a width which is sufficient to overlap the electric wire projecting out of the grooves in a manner such that the screws clamp the electric wire against the posts.
    Type: Grant
    Filed: July 15, 1991
    Date of Patent: October 26, 1993
    Assignee: Financiere Inter-Plus, Inc.
    Inventors: Lucien Letarte, Romeo Boyer
  • Patent number: 5241778
    Abstract: A method for attracting and eradicating bloodsucking insects by generating acoustic waves that simulate a human heartbeat to attract the insects to an attractant zone. An acoustic control mechanism is powered by an electrical power source and generates control signals to an acoustic output unit, such as an acoustic speaker. A sensor unit may be provided for detecting the presence of insects within the attractant zone, and a trigger mechanism used for activating an eradication mechanism in response to a signal from the sensor unit.
    Type: Grant
    Filed: July 22, 1992
    Date of Patent: September 7, 1993
    Inventor: Ron D. Price
  • Patent number: 5241777
    Abstract: A wind-powered mole control device, including a propeller driven shaft on which a clapper is eccentrically loosely mounted. A metal rod extends adjacent the clapper and shaft, and is in communication with the ground. As the shaft is turned by the wind, the clapper strikes the rod end, and rides over the rod end. The striking of the rod and the clapper creates a metallic noise which is repeated as the shaft is turned in the wind, and tends to repel moles.
    Type: Grant
    Filed: March 4, 1992
    Date of Patent: September 7, 1993
    Assignee: Looker, Inc.
    Inventors: Olin L. Looker, Michael J. Smith
  • Patent number: 5239772
    Abstract: A pesticide device holder for railroad cars has a frame resting in a hatch coaming. The frame has a gas-permeable underside support sheet and an impervious upper membrane. Pesticide devices, such as fumigant packages, rest between the support sheet and membrane. A separator is provided to prevent contact between the fumigant packages.
    Type: Grant
    Filed: December 10, 1992
    Date of Patent: August 31, 1993
    Assignee: Salco Products, Inc.
    Inventors: William F. Burian, Kathlynn R. Jahns, David A. Oestermeyer
  • Patent number: 5240674
    Abstract: A method and apparatus are provided for preventing the settlement of or for removing attached mollusks and/or their larvae on the surface of a structure exposed to the aquatic habitat of the mollusks. The method comprises heating the surface with heating means, such as induction coils or resistance heaters, to an elevated temperature for a period of time sufficient to kill the mollusks and/or their larvae. The heating means and/or the power source may be movable so that they can be used to heat different components periodically to remove the mollusks or to prevent settlement.
    Type: Grant
    Filed: June 5, 1992
    Date of Patent: August 31, 1993
    Assignee: Electric Power Research Institute, Inc.
    Inventor: Anthony F. Armor
  • Patent number: 5231796
    Abstract: An integrated pesticide applicating system utilizes lengths of small diameter closed end flexible tubing with periodically spaced perforations having open ends terminating at junction boxes which are serviced on a periodic basis by certified pest control technicians utilizing expanding chemicals that are administered in measured quantities to provide a residual pest control block in concealed areas of a building. Externally mounted junction boxes provide a pest control method in which the chemicals can be applied without the necessity of access to the interior of the building by the servicing technician. Tubing perforations are preferably conically shaped.
    Type: Grant
    Filed: May 7, 1990
    Date of Patent: August 3, 1993
    Assignee: Environmental Safety Systems, Inc.
    Inventor: Gregory A. Sims
  • Patent number: 5219818
    Abstract: Peanut hulls are processed into dust free granules suitable for use as chemical carriers and moisture absorbent materials by being pulverized to a powder. This is done by milling the hulls through a screen having interstices no larger than 3/32 inch. The powder is then compacted into compact masses that are divided into granules and screened.
    Type: Grant
    Filed: June 22, 1992
    Date of Patent: June 15, 1993
    Assignee: Bio-Plus, Inc.
    Inventor: Stephen L. Ivie
  • Patent number: 5218782
    Abstract: A recycling bench includes a rigid housing containing a plurality of aligned compartments in adjacency relative to one another utilizing a single lid overlying the compartments for positioning of various recycling components within each compartment. An alternative aspect of the invention includes individual lids and a pesticide fumigant to minimize insect infestation in the storage of various recycling components.
    Type: Grant
    Filed: November 14, 1991
    Date of Patent: June 15, 1993
    Inventors: Cecelia M. Null, Clinton D. Null
  • Patent number: 5205066
    Abstract: A mole chaser, which comprises a main stem, a cap, a battery chamber, and an audio frequency circuit; the main stem and the cap are fastened together with threads, whereby battery chamber and the audio frequency circuit can be sealed in the main stem. The lower end of the main stem has a point end to facilitate the main stem to be planted in ground. The audio vibration signal is to be sent out through the main stem to chase moles. Through the special design of the battery chamber, the whole chaser becomes simple in structure, such as the battery chamber can be pulled out easily for replacing battery, and the main stem can be closed and sealed with the cap to become waterproof.
    Type: Grant
    Filed: September 30, 1992
    Date of Patent: April 27, 1993
    Inventor: Te Chin Jan
  • Patent number: 5203795
    Abstract: This invention is a weephole ventilation device that permits evaporation of moisture that would otherwise collect within the wall cavity, while incorporating an insect and rodent barrier. It is designed to be installed after completion of exterior masonry walls. The invention consists of a perforated cover plate, a sealing gasket, a novel anchoring device, and a threaded fastener. The perforated cover plate and sealing gasket sub-assembly form an external barrier to insect, rodent and water penetration, and are held to the masonry wall by the threaded fastener and anchoring device. The threaded fastener passes through the perforated cover plate sub-assembly and tightens into the anchor. The anchor is an innovative device that wedges into rifts or fissures in masonry or other surfaces and provides a surface for the attachment of objects.
    Type: Grant
    Filed: October 17, 1991
    Date of Patent: April 20, 1993
    Inventors: Jay W. Balamut, Christopher McCrate
  • Patent number: 5203108
    Abstract: An apparatus for killing insects in produce, which comprises an outer container; means for dividing a space enclosed by the outer container into first and second internal chambers; means for supporting a plurality of bulk produce bins in the first internal chamber; first and second air passage means for selectively allowing passage of air between the first internal chamber and the second internal chamber; means for circulating air in the second internal chamber successively through one of the air passage means, the first internal chamber, the other of the air passage means, and back into the second internal chamber; and means for heating the circulating air.
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: April 20, 1993
    Inventor: Martin W. Washburn, Jr.
  • Patent number: 5196823
    Abstract: A deratization system includes a plurality of remote terminals provided with vibrating apparatus, the remote terminals being controlled by a central transmitting unit. High frequency signals generated by the central transmitting unit are sent through the existing electrical net of a building to the remote terminals using the technique of simultaneously conveyed frequencies. A signal energizes all terminals or just a number of preselected terminals. In turn the remote terminals are sending in case of malfunction an error signal to the central transmitting unit.
    Type: Grant
    Filed: April 17, 1989
    Date of Patent: March 23, 1993
    Assignee: Multitecno S.p.A.
    Inventor: Michele Formigoni
  • Patent number: 5193721
    Abstract: A dispenser apparatus includes a central housing, with the central housing mounting a supply container upper end thereof, wherein the supply container is arranged in varied orientation coaxially aligned with a delivery tube directed below the central housing. A trigger housing mounted to the central housing effects reciprocation of a control rod, with the control rod mounting a door plate within the central housing to permit communication between the container and the delivery tube. A modification of the invention includes end cap structure mounted to a lower distal end of the delivery tube to include a first cap formed with an apertured floor, and a second cap including a grinding mechanism to effect pulverizing of granular material for greater and more rapid absorption of pesticide components within a dispensed area.
    Type: Grant
    Filed: April 7, 1992
    Date of Patent: March 16, 1993
    Inventor: Richard N. Gryder
  • Patent number: 5191733
    Abstract: A mole spear is provided which consists of an elongated shaft attached to and extending upwardly from the center of a base member. A sleeve slides upon the elongated shaft and is gripped by a first hand of a person. A handle is affixed to an upper end of the elongated shaft and is gripped by a second hand of the person. A plurality of spikes are attached to and extend downwardly from the base member. The second hand of the person can press down upon the handle to drive the elongated shaft through the sleeve to force the spikes into a mole tunnel beneath a raised surface of the earth and pierce a mole therein to kill it.
    Type: Grant
    Filed: April 20, 1992
    Date of Patent: March 9, 1993
    Inventor: Virdean N. Withrow
  • Patent number: 5184419
    Abstract: A new method and apparatus includes the inspection of structural wooden members within a structure wall, and then the isolation of the wooden members infected with the insects. Heat producing devices are positioned adjacent to a first one of the isolated wooden members on the outside of the wall. The positioned heat producing device is then activated, and the adjacent isolated wooden member is caused to be heated to increase the temperature thereof sufficiently to kill a large number of the insects contained therewithin to eradicate substantially the entire infestation thereof. The heat producing device is then deactivated after the insect killing temperature has been attained. Thereafter, the remaining individual ones of the isolated infected wooden members are treated in a similar manner.
    Type: Grant
    Filed: April 24, 1991
    Date of Patent: February 9, 1993
    Inventor: Joseph C. Tallon
  • Patent number: 5184418
    Abstract: A termite protection system (10) for a wooden foundation structure (12) is disclosed having a plurality of perimeter pipe sections (34) which include integral nozzles orifices (66), and a plurality of interior pipes (38) with non-integral nozzles (44), for distributing a delivering termite control fluids. The pipes (34) and (38) each have a plurality of male ends (50) which can be permanently inserted into a female end (48) of another pipe (34) or (38) or accessory fittings such as "T" fittings (40) and elbow fittings (32). Longitudinal ridges (56) and (58) within each of the male ends (50) fit into receiver grooves (62) in each of the female ends (48) as an aid to orientation of the (34) and (38) and other components. The female ends (48) have interior locking teeth (64) for locking into ridge indentations (60) on the male sections (50) such that components snap together and cannot be easily disassembled.
    Type: Grant
    Filed: March 19, 1991
    Date of Patent: February 9, 1993
    Inventor: Robert A. Fletscher
  • Patent number: 5179840
    Abstract: An article such as a mattress, carpet or curtain is treated by spraying its surface with liquid cryogen (usually liquid nitrogen). The liquid nitrogen acts as an acaricide and kills house dust mites. The dead mites are then removed from the freshly sprayed fabric. Such a treatment is also effective in dislodging particles of dirt from the articles and may be used for example to clean a carpet in situ. After treatment with the liquid nitrogen, the carpet may be subjected to a conventional vacuum cleaning.
    Type: Grant
    Filed: October 11, 1990
    Date of Patent: January 19, 1993
    Assignee: The BOC Group plc
    Inventor: Jonathan P. Worsfold
  • Patent number: 5175959
    Abstract: A snail and slug control apparatus formed as a composite sheet fabricated from a layer of polythene (polyeethylene) coated at least on one side with copper foil. An adhesive layer may be applied between the layer of polythene and the copper foil. The apparatus may be fabricated into a composite sheet by inserting the layers between nip rollers and cut to a preselected width. A length of the apparatus may be shaped to form a protective perimeter around selected areas. The apparatus may be held in place with stakes.
    Type: Grant
    Filed: April 15, 1991
    Date of Patent: January 5, 1993
    Inventors: Michael K. Scholnick, Mildred C. Scholnick
  • Patent number: 5172514
    Abstract: Traps which include nematode infective juveniles as a toxic agent are effective in decreasing insect populations in a variety of environments. The traps of the invention contain a stable infective juvenile nematode population in a configuration which encourages nictation and the traps provide an effective harborage for the roaches or other insects. Relative humidity is maintained in the traps by the supply of molecular water.
    Type: Grant
    Filed: November 19, 1990
    Date of Patent: December 22, 1992
    Assignee: Biosys Corporation
    Inventors: Terry Weber, Ramon Georgis, Paul Pruitt, Jean Wren
  • Patent number: 5170584
    Abstract: A device which serves as a barrier precluding the migration of ground dwelling pests of, but not limited to the Phylum Mollusca, Class Gastropoda (snails and slugs) therebeyond. The barrier has a concavo-convex-spiraloid configuration in cross-section generally defined as an involute. The barrier has an interior which is concave and contains an upwardly disposed trough. The trough serves as a container for baits to attract and retain snails for later collection. Alternatively, the trough may also serve as a container for pesticides and pesticide-containing baits such that said baits are presented to pests with virtually no risk of access to and accidental poisoning of pets and children. The exterior of the barrier is a substantially convex configuration. The various component parts forming the barrier may be assembled using a plurality of linear and angular connectors such that the barrier can accommodate cultivated areas of varying enclosed geometric configurations.
    Type: Grant
    Filed: June 14, 1990
    Date of Patent: December 15, 1992
    Inventor: Michael D. Perry
  • Patent number: 5165199
    Abstract: This invention concerns a non-toxic method of exterminating dry wood termites, fleas, roaches, ants, weevils and the like by utilizing an inert freezing liquid such as liquid nitrogen as the killing agent. The liquid nitrogen is inserted so as to envelop the colony of objectionable organisms until the environment is reduced to a temperature of at least zero degrees Fahrenheit and maintained at that temperature for between 2 to 5 minutes. This method effectively kills the organisms by crystalizing the innards and freezing the cells, thereby eliminating the need for more dangerous and toxic poisons that are currently being used.
    Type: Grant
    Filed: April 23, 1991
    Date of Patent: November 24, 1992
    Inventor: Joseph C. Tallon
  • Patent number: 5159778
    Abstract: The invention relates to a method for the preventive protection of materials against pests permanently and/or temporarily living in the soil, in particular, termites. One or more barriers of sharp-edged inert particles of a particle size screened at from 0.001 to 30 mm and/or spherical inert particles having a diameter of 0.5 to 5.0 mm are arranged around and/or in the object to be protected.
    Type: Grant
    Filed: September 10, 1990
    Date of Patent: November 3, 1992
    Assignee: Desowag Materialschutz GmbH
    Inventors: Wolfgang Metzner, Michael Pallaske, Hans-Werner Wegen
  • Patent number: 5152096
    Abstract: A bait station device for the control of ants, especially of Pharaoh's or Sugar Ant.
    Type: Grant
    Filed: December 12, 1991
    Date of Patent: October 6, 1992
    Assignee: Sandoz Ltd.
    Inventor: Robin R. Rudolph
  • Patent number: 5122364
    Abstract: A process for producing a fog of hydrated silica particles carrying an insecticide, fungicide or a mixture of both, with an associated fog of ammonium chloride particles also carrying an insecticide or fungicide or mixture of both.
    Type: Grant
    Filed: February 12, 1990
    Date of Patent: June 16, 1992
    Inventor: Abelardo A. Portas
  • Patent number: 5109628
    Abstract: An apparatus includes a container with a lid securable thereon, with a first inlet elbow fixedly mounted to the lid and directed interiorly of the container, and an outlet elbow positioned adjacent the inlet elbow in communication with the interior of the container. A blower motor and nozzle is directed to direct pressurized air through the inlet elbow, wherein volatile noxious fluids are permitted to vitalize, wherein such directed gases are directed through the outlet elbow and an associated flexible conduit through a nozzle into an associated gopher hole and the like. Modifications of the invention include a postioning plate and spikes mounted orthogonally relative to an axis of the nozzle for securement of the nozzle relative to the gopher hole and may further include a threaded inlet tube to permit directing of components into the container with the lid secured thereon during use of the organization.
    Type: Grant
    Filed: May 29, 1990
    Date of Patent: May 5, 1992
    Inventor: Lee J. Ellefson
  • Patent number: 5109629
    Abstract: A system (10) and method for killing ants in a subterranean colony (102) is disclosed. Liquid insecticide is vaporized in a fogging a vaporization chamber (23) by the exhaust of an internal combustion engine (14) such as that mounted on a lawn mower (12) or farm tractor. An insertion probe (30) having exhaust holes (36) is connected to an output of the vaporization chamber by a flexible hose (24). In operation, the probe is inserted into the subterranean colony (102), whereby vaporized insecticide is applied down in the colony. Such vaporized insecticide travels through passages to various "rooms" of the colony, thereby contacting ants in all parts of the colony.
    Type: Grant
    Filed: October 26, 1990
    Date of Patent: May 5, 1992
    Inventors: William G. King, Jr., W. Edward Lawrence
  • Patent number: 5095646
    Abstract: A portable electrical device for keeping birds from a specific place. The device comprises a pair of parallel wires entrained on a swinging block. The wires carry a voltage potentially lethal to birds and bracket a trough formed in the block and adapted to a hold a bait.
    Type: Grant
    Filed: February 22, 1991
    Date of Patent: March 17, 1992
    Inventor: Kenneth C. Bunkers
  • Patent number: 5094028
    Abstract: A termite blocking system which introduces a non-toxic, termite repelling, hygroscopic material, such as salt, into the pathway of subterranean termites. By ingesting the salt and coming into contact with the salt laden soil, the termites are repelled. If the termites persist in advancing through the treated soil, they will die of dehydration. The use of such materials provides a non-polluting barrier for inhibiting the advance of subterranean termites into a structure.
    Type: Grant
    Filed: June 14, 1990
    Date of Patent: March 10, 1992
    Inventor: Derrill L. Hume
  • Patent number: 5090152
    Abstract: An arrangement in vertical sewage system pipes for preventing rodents, such as rats, from entering dwellings, living accommodation, office accommodation, and similar building structures. The arrangement includes a frame which is L-shaped in cross-section with an outwardly extending flange sealingly inserted in a joint between two mutually adjacent pipe sections and an axially extending flange to which are attached a plurality of springing wires or rods so as to form a wire cone which tapers in the direction of sewage flow. The springing wires or rods terminate at the apex of the cone in anear touching relationship. The wires or rods are made of stainless steel with a wire gauge of from 0.7 to 2.5 mm or of fiber glass with a wire gauge of from 0.8 to 2.0 mm.
    Type: Grant
    Filed: October 10, 1990
    Date of Patent: February 25, 1992
    Assignee: Aktiebolaget Gustavsberg
    Inventor: Rolf Ling
  • Patent number: 5072541
    Abstract: Methods and apparatus for destroying snails avoid a cleanup problem by causing live snails to cannibalize snail carcasses. To this end, snail carcasses are provided in a trap which is made accessible to live snails for consumption of the snail carcasses. The trap preferably is of a collapsible type or is otherwise provided with first volume permitting entry of live snails into the trap, and is reducible to a second volume insufficient to accommodate live snails, whereby such live snails are crushed. Further live snails are then permitted to cannibalize the crushed snails by restoring the trap to its first volume for entry of the further live snails into the trap. The first volume may be reduced to the second volume against a bias, which is employed to restore the trap to its first volume. Operation of these methods and apparatus may be tied in with a sprinkler system or other apparatus for providing a pressurized medium from time to time.
    Type: Grant
    Filed: October 23, 1986
    Date of Patent: December 17, 1991
    Inventors: Milton M. T. Chang, Luc P. Benoit