04976804 is referenced by 7 patents and cites 7 patents.

A segmental drum (1) has a plurality of circumferentially spaced drum segments (28) radially movable by a set of links (36) pivotally connected to a pair of axially movable hub assemblies (34) slidably mounted on a drum shaft (12). Each of the segments (28) has a cylindrical center portion (30) and end portions (32) with recesses providing pockets (68) for the tire bead portions. The links (36) are positioned between the end portions (32) providing space for large bead portions in the pockets (68) and at the same time the segments (28) are retractable to a small diameter to facilitate placing of a tire band (64) over the drum (10).

Title
Expandable tire building drum
Application Number
7/347584
Publication Number
4976804
Application Date
May 5, 1989
Publication Date
December 11, 1990
Inventor
Fernand Kneip
Diekirch
LU
Agent
Frederick K Lacher
T P Lewandowski
Assignee
The Goodyear Tire & Rubber Company
OH, US
IPC
B29D 30/32
B29D 30/24
View Original Source