3867231 is referenced by 21 patents and cites 11 patents.

Apparatus for building a tire having a circumferentially inextensible belt, and particularly a multi-condition tire building drum providing in an intermediate condition, a high crown firmly supported for stitching a cylindrical tire band, a radially expansible sleeve secured radially on and extending axially between a pair of drum end assemblies movable toward and away from each other and cooperating with the sleeve to form a chamber into which air is admitted to expand the sleeve into toroidal form as the end assemblies are moved toward one another, bead locating segment assemblies adjacent to and axially outboard of the sleeve ends to locate beads of the tire in firm axial and concentric position as the tire is shaped from a cylindrical to a toroidal form and particularly useful in securing the beads in proper location during conventional stitching operations. The drum features expansion of the internal supporting segments by rotation of scroll plates each having a plurality of spiral cam grooves by which the segments are moved radially inwardly and outwardly.

Tire building machine
Application Number
Publication Number
Application Date
June 28, 1972
Publication Date
February 18, 1975
Casey William R
Washburn R S
Brunner F W
The Goodyear Tire & Rubber Company
B29h 17/26
B29h 17/16
B29D 30/24
B29D 30/36
B29D 30/06
B29D 30/20
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