Pneumatic granule blender for asphalt shingles

B - Operations – Transporting – 05 – C

Patent

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Details

B05C 19/04 (2006.01) B05D 1/30 (2006.01)

Patent

CA 2175382

The apparatus for applying gran- ules to a coated asphalt sheet comprises a nozzle for holding an accumulation of granules, an opening at the bottom of the nozzle for discharging the granules onto the coated asphalt sheet, a buffer cham- ber positioned in communication with the accumulation of granules, and vac- uum means for reducing the pressure in the buffer chamber to stop the flow of granules through the opening.

L'invention se rapporte à un appareil permettant d'appliquer des granulés sur une plaque enduite d'asphalte, cet appareil comprenant une buse qui retient une accumulation de granulés, une ouverture située au fond de la buse afin de déverser les granulés sur la plaque enduite d'asphalte, une chambre tampon positionnée de manière à communiquer avec l'accumulation de granulés, et un dispositif à vide qui réduit la pression dans la chambre tampon afin de stopper l'écoulement des granulés passant par l'ouverture.

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