B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
154/18.7
B29D 30/24 (2006.01)
Patent
CA 1157754
TIRE BUILDING MACHINE DRUM Abstract of the Disclosure A contractible tire building drum 10 having segmental cylindrical shoulder rings 25,26 with flanges 36 at the ends and a stretchable bladder 27 positioned over and between the shoulder rings 25,26. Each of the shoulder rings 25,26 has a primary set of segments 38 and a secondary set of segments 39 alternately spaced around the ring. The primary and secondary sets of segments 38,39 are retractable from positions in the cylindrical shoulder ring 25,26 to a nested position radially inward. Guide means 47 are provided to displace the secondary segments 39 in an axial direction during retraction of the segments so that the secondary segments 39 are axially displaced from the primary segments 38 with the flanges 36 of the secondary segments 39 overlapping the flanges 36 of the primary segments 38.
389049
Felten Gilbert A.
Stalter Joseph F.
Sim & Mcburney
The Goodyear Tire & Rubber Company
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