Resources Contact Us Home
Hot air device for thermowelding bitumen membranes

Image Number 2 for United States Patent #7631678.

The invention concerns a hot air device for thermowelding membranes to surfaces. It includes an air inlet, a casing in fluid communication therewith, a combustion chamber mounted within the casing and spaced apart therefrom. The chamber has perforations allowing air to flow therein. The perforations allow some air to flow into the upstream section of the chamber producing an air-fuel mixture, and let the remaining air into the downstream section, thus shortening the flame within the chamber and producing hot air. The device includes an outlet portion for expelling hot air and not allowing a flame out therefrom, and a blower to force airflow from the air inlet through the chamber and out from the nozzle. The chamber may be pyramid or cone shaped and have a deflector to help direct air into the upstream section.

  Recently Added Patents
Custom in-ear headset
Poly(phenylene ether) composition and article
Method for preparing (R)-3-(3-fluoro-4-(1-methyl-5,6-dihydro-1,2,4-triazin-4(1H)-yl)phenyl)-5-- (substituted methyl)oxazolidin-2-one derivatives
Energy storage type of dual-drive coupled power distribution system
Image processing apparatus and method
Curable composition for imprints, patterning method and pattern
Secure item identification and authentication system and method based on unclonable features
  Randomly Featured Patents
Rotating, water-fed brush device for the internal cleaning of water closets and similar fixtures
Apparatus and method for pumping powdered material
Removing hydrogen sulfide from a gas
Method for establishing data defining a tool path for a numerically controlled machine without establishing offset plane data
Method of monitoring medical item inventory
Process for the synthesis of tertiary phosphine oxides, and new tertiary phosphine oxides
Electronics module assembly
Steam iron
Structure for reinforcing automotive cover member of synthetic resin
Flexible collapsible containers, and method of molding