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
Method and a system for registering a 3D pre-acquired image coordinates system with a medical positioning system coordinate system and with a 2D image coordinate system
Press nut
Sensor packages and method of packaging dies of differing sizes
System and method for terminating communication sessions with roaming mobile devices
Non-volatile memory array and device using erase markers
Disposable and tamper-resistant RFID lock
Secure Flash-based memory system with fast wipe feature
  Randomly Featured Patents
Bleaching olefin sulfonates with phosphate and peroxide
Character segmentation method
Biological process for the elimination of sulphur compounds present in gas mixtures
Dual-mode clock for improved power management in a wireless device
Lithographic projection apparatus and particle barrier for use therein
Microemulsion cleaning composition
Control device which provides a plurality of pre-established and controlled positions, more particularly for use with the speed gear shifting devices for cycles and the like
Magnetic shield-forming magnetically soft powder, composition thereof, and process of making
Sharpener for twist drills
Interface method for searching virtual space based on body icon