Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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B29D
PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
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30/00
Producing pneumatic or solid tyres or parts thereof
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B29D30/06
Pneumatic tyres or parts thereof; (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
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B29D30/20
by the flat-tyre method, i.e. building on cylindrical drums
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B29D30/26
Accessories or details, e.g. membranes, transfer rings
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B29D2030/2614
Bladders associated with the building drum, e.g. bladders used for the toroidal expansion, bladders for turning-up the plies
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B29D2030/2621
Means for clamping bladders on the drum shoulders
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B29D2030/2621

Tire building drum with a bladder or sleeve
11518128 · 2022-12-06 · ·

Disclosed is a tire building drum with a first bladder or sleeve, wherein the tire building drum has a first release member and a first actuator for generating a relative movement between the first release member and the drum body to move the first release member in a first release direction with respect to the drum body from a first fixation position in which the first release member fixates the first circumferential edge of the first bladder or sleeve to the drum body into a first release position in which the first release member releases the first circumferential edge from the drum body. Also disclosed is a method for operating the aforementioned tire building drum.

TIRE BUILDING DRUM WITH A BLADDER OR SLEEVE
20210283874 · 2021-09-16 ·

Disclosed is a tire building drum with a first bladder or sleeve, wherein the tire building drum has a first release member and a first actuator for generating a relative movement between the first release member and the drum body to move the first release member in a first release direction with respect to the drum body from a first fixation position in which the first release member fixates the first circumferential edge of the first bladder or sleeve to the drum body into a first release position in which the first release member releases the first circumferential edge from the drum body. Also disclosed is a method for operating the aforementioned tire building drum.

TIRE BUILDING DRUM AND METHOD FOR TURNING-UP A TIRE COMPONENT
20260001292 · 2026-01-01 ·

A tire building drum and a method are provided for turning-up a tire component. The tire building drum comprises a drum body that is rotatable about a drum axis, an inflatable turn-up bladder extending in a circumferential direction about the drum axis around the drum body for turning-up a tire component supported on said turn-up bladder, and a plurality of pressing arms for pressing against the turn-up bladder during the turning-up of the tire component. The tire building drum further comprises a plurality of hinges for hingably connecting the pressing arms to the drum body. The plurality of hinges is located underneath the turn-up bladder when the turn-up bladder is uninflated. The tire building drum is further provided with an underlay extending between at least one hinge of the plurality of hinges and the turn-up bladder in a radial direction.