High pressure parts washer having a hand directed spray nozzle, and an enclosing chamber containing the parts in a manner whereby the spraying zone for solvent, with which the parts are sprayed by the nozzle, is closely confined within the enclosure so as not to expose the operator or the outside environment...http://www.google.com.au/patents/US4433698?utm_source=gb-gplus-sharePatent US4433698 - High pressure parts washer
