Pneumatically or hydraulically loosening, removing or dislodging undesirable matter

Official title: {Pneumatically or hydraulically loosening, removing or dislodging undesirable matter, e.g. removing by blowing, flushing, suction; Application of melting liquids; Loosening or removing by means of heat, e.g. cleaning by plasma torches, drying by burners (E01H8/125 takes precedence; drying, blowing or liquid-applying devices incorporated in the permanent way E01B19/00; heating or cooling rails during construction or maintenance E01B31/18; wetting or lubricating rails B61K3/00; plasma torches H05H1/26)}

E01H8/105 (Pneumatically or hydraulically loosening, removing or dislodging undesirable matter) appears on 20 US grants and 24 published applications in this corpus.