B - Operations – Transporting – 29 – H
Patent
B - Operations, Transporting
29
H
154/18
B29H 17/16 (1980.01)
Patent
CA 1074222
BUILDING DRUM FOR TIRES AND CYLINDRICAL ARTICLES HAVING AXIALLY SPACED BEADS Abstract of the Disclosure A simple low cost building drum, free of axially movable parts for building tires and cylindrical articles having inextensible beads of given diameter therein but spaced axially any selected distance apart, has a single axially and circumferentially continuous radial expandable membrane overlying a thick-walled cylinder of deformable rubbery material the full axial length of which is expandable radially to wrap the membrane against beads placed about the drum and to divide the membrane into a non-inflatable center section and two inflatable end sections each axially outboard of a respective bead. The thick-walled cylinder is expanded radially by inflating in axially extending cylindrical sleeve within control members in the form of four semi-cylindrical strips which prevent bulging outward of the central portion of the thick-walled cylinder and which engage cylindrical flanges of a pair of end rings spaced along the drum's center shaft. The foregoing abstract is not to be taken as limiting the invention of this application, and in order to understand the full nature and extent of the technical disclosure of this application, reference must be made to the accompanying drawing and the following detailed description.
279395
Houck Stanley J.
Smith Michael W.
LandOfFree
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