An air brush is provided with a handle, a front body, an adjusting screw and a paint regulating needle. The handle, front body and the adjusting screw together define a tubular cavity through which the paint regulating needle is held. One end of the paint regulating needle extends outside of the...http://www.google.se/patents/US5687913?utm_source=gb-gplus-sharePatent US5687913 - Air brush with paint flow regulating
