Tire building drum with innerstitching device
AssigneeBridgestone/Firestone, Inc.
InventorKarl J. Siegenthaler
Life of this patent
Estimating the term…
Abstract
A tire building device wherein a unistage drum (6) includes an inner shaft (7) having an intermediate portion fitted with an innerstitching device (11), and two end portions located on opposite sides of the innerstitching device (11) and supporting two half drums (12,13) connected to the inner shaft (7) via the interposition of respective slides (18), each of which is connected, in one instance, in a sliding and angularly fixed manner to the inner shaft (7), and, in another, in a rotary manner to the respective half drum (12)(13) which may be locked in relation to the respective slide (18) by means of a friction coupling (53).
Claims6
A tire building device including a unistage drum in turn including an inner shaft;
- two half drums coaxial with said inner shaft and movable along same and in relation to each other between an open idle position and a closed operative position;
- expandable clamping means on each of said half drums for clamping a respective bead;
- and a number of annular bladders on each of said half drums, selectively inflatable with pressurized fluid;
- characterized by the fact that it also includes innerstitching means between said half drums and fitted onto said inner shaft so as to rotate with same;
- and slide means between each of said half drums and said inner shaft;
- each of said slide means being connected to said inner shaft in a sliding and angularly fixed manner;
- each of said half drums being connected for rotation to said respective slide means so as to rotate in relation to same about the axis of said inner shaft;
- and connecting means being provided between each of said half drums and said respective slide means, and being selectively operatable for angularly locking said half drum to said respective slide means.
Dependencies are inferred from the claim text.