for defining uncoated areas that are not enclosed within coated areas or vice versa, e.g. for defining U-shaped border lines

Full Title

Arrangements for controlling delivery; Arrangements for controlling the spray area > for controlling the spray area (B05B3/00 takes precedence) > Masking elements, i.e. elements defining uncoated areas on an object to be coated > for defining uncoated areas that are not enclosed within coated areas or vice versa, e.g. for defining U-shaped border lines