Fishing – trapping – and vermin destroying – Vermin destroying – Insect
Patent
1987-12-23
1989-02-21
Crosby, Gene P.
Fishing, trapping, and vermin destroying
Vermin destroying
Insect
239 3, A01M 900
Patent
active
048053414
ABSTRACT:
A method of exterminating harmful insects under the floor of a house or building comprises spraying insecticide into the enclosed area under the floor of the house or building. The insecticide used, is in the form of a fine powder which is loaded into an airtight dispenser. The dispenser has an opening for the insecticide to pass through. The opening is initially blocked by insecticide while pressure inside the dispenser is increased. Subsequently, insecticide is forced out the dispenser opening and delivered to a nozzle which sprays the insecticide under the building floor at a high exit velocity. The insecticide forced from the dispenser is delivered to the nozzle at a high flow rate through a hose with at least an inner surface of synthetic resin with a high electrical resistance. Insecticide is charged with static electricity through friction with the synthetic resin inner surface of the hose. The fine powder insecticide adheres to all exposed surfaces and inside crevices in the area under the building floor.
REFERENCES:
patent: 2657339 (1953-10-01), Hampe
patent: 4553698 (1985-11-01), Parker
patent: 4648202 (1987-03-01), Renth
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