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DRUM-CUM-DISC BRAKES

5th July 1957, Page 76
5th July 1957
Page 76
Page 76, 5th July 1957 — DRUM-CUM-DISC BRAKES
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A BRAKING system aimed at pro viding the greatest possible swept rotor area forms the.', subject of patent No. 775,237. It is claimed that the use of the large area keeps thermal effects to a minimum_ (Bendix Aviation Corp., South Bend, Indiana, U.S.A.)

The brake rotor has three separate working surfaces, comprising a circular drum part (I) and a pair of opposed disc-like faces (2 and 3). The hydraulically operated friction pads (4) are housed between these faces and can be expanded into braking contact with them.

The drum portion employs conventional shoes (5) although these are not directly operated, but are brought into action as a result of the use of the disc brake. When this is applied, the pad assemblies are able to swing about their anchor pins (6), and it is this movement that is used to bring the shoes into contact.

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