Spraying apparatus (1) is provided that has two horizontally disposed upright spray arm assemblies (33) that each carry sprayers (43). Each spray arm assembly (33) has a sprayer (43) in an upper part (35) and a sprayer (43) in a lower part (37). The upper part (35) is able to move relative to the lower...http://www.google.sh/patents/US7344091?utm_source=gb-gplus-sharePatent US7344091 - Spraying
