| 摘要 |
Apparatus for spraying a material such as an industrial, agricultural or building coating such as concrete comprises a wheeled or tracked trolley (1) which may be hand-pushed or motor-driven and a boom (3) carrying a sprayhead (32) at one end and a counter-weight (38) at the other end. Coating substances are supplied to the sprayhead (32) via the hollow interior of the boom and are sprayed using a compressed gas. The spray head (32) is formed by a flared bowl (37) on the end of the boom closed by a removable plastic cap (33) including the spraying aperture (35). The boom (3) may be telescopic or different length booms may be provided and the boom is pivotally supported on a vertical support shaft (11) which may be telescopic or different length shafts may be provided. |
