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
Polymer bonded fibrous coating on dipped rubber articles skin contacting external surface
Reduced sorbent utilization for circulating dry scrubbers
Organic light-emitting display and method of manufacturing the same
Multi-carrier operation for wireless systems
Playlist search device, playlist search method and program
Printed wiring board with reinforced insulation layer and manufacturing method thereof
Apparatus and method for multiple pagings in broadband wireless communication system
  Randomly Featured Patents
Composition for the administration of polymeric drugs
Automatic water distributor
Apparatus and method of setting sound mode
Substituted glucosides
Weighted handle dog leash
Pressure control architecture for fluid tanks having fluid level sensing
Method of foreground/background separation
Despreading circuit
Internet based telephone apparatus
Sensor housing for actuating street lamps