Patent · US Expired

Evaporation apparatus for active ingredients such as pyrethrum incorporated into solid carrier materials

US4750471A · kind A · utility

12Cited by
10References
9Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMay 22, 1986
Grant dateJun 14, 1988
Priority date
Expiry dateMay 22, 2006

Classification

  • Technology area (CPC F)Mechanical Engineering; Lighting; Heating
  • CPC primaryF23D2900/03081
  • WIPO fieldMedical technology
  • WIPO sectorInstruments

Abstract

In order to improve an apparatus for the evaporation of active ingredients such as pyrethrum or similar insecticides, air-improving, bactericidal, disinfecting and/or, for example, curing substances incorporated in cellular boards or other solid carrier materials, consisting of a housing in which there is provided a heating means which is arranged behind a housing window, and of a holding means for the exchangeable arrangement of an active ingredient carrier panel in front of the housing window in such a way that an evaporation apparatus which is independent from electrical energy can be achieved while maintaining high reliability in handling, it is proposed that a catalytic, merely glowing, that is flamelessly acting burner 4 with fuel tank 3 be arranged in the housing 1 having ventilation openings 13 at such a distance from the housing window 2 that the hot waste gases from the burner 4 flow through the housing window 2 and activate the active ingredients.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.