Suction-hood for facade-cleaning

Details Suction-hood for facade-cleaning Suction-hood for facade-cleaning

1989-10-27

1991-08-13

Schmidt, Frederick R.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51429, B24C 900, B08B 502

Patent

active

050385275

ABSTRACT:
The invention concerns an evacuation hood which is part of facade-cleaning equipment with a sandblasting system used under the hood and of which the dust generation is limited to the dust-collection chamber bounded by the hood. For purposes of erection in the free areas of a scaffold, the hood comprises a peripheral wall 1 made of a flexible material; the hood's contour is determined by skeleton pipes 3, 5 inserted into pockets 4 at the hood corners and braced by tensioning means 12, 13 to the scaffold 14; a flexible curtain 6 acting as a seal and movable relative to the facade starts at the peripheral wall andis supported transversely to its direction of set-up by distributed spacers 3a, 5a, 8a and further can be set to be at varying distances to the facade.

REFERENCES:
patent: 4199905 (1980-04-01), Neidigh et al.
patent: 4281485 (1981-08-01), Chorila, III
patent: 4305344 (1981-12-01), Bochett
patent: 4757179 (1988-11-01), Lewis
patent: 4825598 (1989-05-01), Schlich

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