1357697 Trailer over-run brakes; internal shoe drum brakes HAHN FAHRZEUGBAU GmbH 4 Feb 1972 [24 Feb 1971 28 April 1971] 5214/72 Headings F2E and F2F The internal shoe-drum brake of a trailer overrun apparatus has two brake shoes 8, 9 operable by a spreading device 7, the brake shoe 9...