公开(公告)号：US12011894B2

公开(公告)日：2024-06-18

申请号：US17868150

申请日：2022-07-19

Applicant: BRIDGESTONE EUROPE NV/SA

Inventor： Roberto Mattocci

IPC: B29D30/62 ,  B29D30/52 ,  B29D30/58 ,  B29D30/60 ,  B29D30/66 ,  B29L30/00

CPC classification number: B29D30/62 ,  B29D30/52 ,  B29D30/58 ,  B29D30/60 ,  B29D30/66 ,  B29L2030/002

Abstract: A method of manufacturing an agricultural tyre (1) with deep cross-lugs (6), comprising the steps of: (a) proving a tyre case (2) and tread belts (3); (b) applying rubber blocks (206) onto tread belts (3), each of such rubber blocks (206) being arranged to make a respective lug (6) of the final tread (4); (c) winding a rubber ribbon (200) above said rubber blocks (206) so as to completely enclose said rubber blocks (206); (d) curing the rubber blocks (206) together with the wound ribbon (200) in a curing mould (105) negatively reproducing a desired pattern of the tread (4).

公开(公告)号：US11993044B2

公开(公告)日：2024-05-28

申请号：US17038346

申请日：2020-09-30

Applicant: BRIDGESTONE BANDAG, LLC

Inventor： Robert G. Otting ,  Terry A. Westaway

IPC: B29D30/52 ,  B29D30/56 ,  B29D30/06 ,  B60C11/03

CPC classification number: B29D30/52 ,  B29D30/56 ,  B29D30/0601 ,  B29D30/0606 ,  B29D2030/0607 ,  B29D2030/0609 ,  B29D2030/0651 ,  B29D2030/0653 ,  B60C11/0318

Abstract: A mold for molding a tire tread comprises a plurality of mold segments. Each of the plurality of mold segments includes an integer number of tread pitch repetitions. The plurality of mold segments are structured to be coupled to each other end-to-end so as to form the mold such that the mold includes an integer number of tread pitches. The mold also includes at least one mold end segment positioned on at least one end of the mold and has a mold end segment length shorter than a length of each of the plurality of mold segments.

公开(公告)号：US11161313B2

公开(公告)日：2021-11-02

申请号：US16087798

申请日：2017-03-27

Applicant: Compagnie Generale des Etablissements Michelin

Inventor： Chinglin Pan ,  Bruce Carney ,  Michael Chandler ,  Michael Widmyer

IPC: B29D30/54 ,  B29D30/08 ,  B29D30/52 ,  B23Q3/00

Abstract: A tread support device (10) for a retread process is provided that has a first support roller (12) that rotates about a first support roller axis. A second support roller (16) is present that rotates about a second support roller axis. A third support roller (20) is also included that rotates about a third support roller axis. The first support roller (10), the second support roller (12), and the third support roller (20) all support a tread (24). Also in the tread support device (10), the first support roller axis, the second support roller axis, and the third support roller axis are arranged with respect to one another so as to be located on a circumference of a circle (32).

公开(公告)号：US11027508B2

公开(公告)日：2021-06-08

申请号：US15105769

申请日：2014-12-18

Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN ,  MICHELIN RECHERCHE ET TECHNIQUE, S.A.

Inventor： Jose Merino Lopez

IPC: B29D30/56 ,  B29D30/54 ,  B29D30/52

Abstract: A method of retreading a tire casing includes the step of disposing a cured rubber tread on a carcass with a layer of hot-melt material interposed between the tread and the carcass. The method continues with the step of rollering the tread by means of at least one roller with a width (r) that is less than a width (b) of the tread.

公开(公告)号：US10737451B2

公开(公告)日：2020-08-11

申请号：US15538984

申请日：2014-12-31

Applicant: Chinglin Pan

Inventor： Chinglin Pan

IPC: B29D30/00 ,  B29D30/68 ,  B29C48/07 ,  B29C48/00 ,  B29D30/52 ,  B29D30/06 ,  B29C35/02 ,  B29C48/91 ,  B29C33/44

Abstract: Particular embodiments of the invention include a closed-loop tread strip forming unit (100) and methods for forming tread strips using a closed-loop unit. Embodiments of such forming units include a tread strip extruder (110) located at a pre-cure end of the closed-loop tread strip forming unit. Such units include an uncured tread strip handling assembly (120) configured to transport the first uncured tread strip from the first tread strip extruder and to a first tread strip mold member (130). The unit further includes a curing press (150) having an inlet and an outlet, a pre-cure mold handling assembly (140) configured to insert the loaded tread strip mold member into the curing press, a post-cure mold handling assembly (160) configured to receive the loaded tread strip mold member from the outlet of the curing press, a return assembly (170) configured to transfer the first tread strip mold member to the pre-cure end to complete a closed-loop.

公开(公告)号：US20200215737A1

公开(公告)日：2020-07-09

申请号：US16641231

申请日：2018-05-08

Applicant: Continental Reifen Deutschland GmbH

Inventor： Peter Wichmann ,  Thomas Reinhardt ,  Stephan Disselhoff

IPC: B29C48/30 ,  B29C48/49 ,  B29C48/16 ,  B29C48/305 ,  B29D30/52

Abstract: The invention relates to a preform device for positioning extruded rubber mixtures, characterized in that the preform device consists of an inlet module (2) and an outlet module (3), wherein both the inlet module (2) and the outlet module (3) each have a base surface (11, 12) and a contact face (19, 21) opposite the base surface (11, 12, 13), and wherein the surface of the contact face (19, 21) of the inlet module (2) is smaller than the surface of the base surface (11, 12) of the inlet module (2). The invention also relates to an extruder mold system for molding extruded rubber mixtures into a complete rubber element (40), having the preform device and at least one final forming device, and to a corresponding extruder system (22).

公开(公告)号：US20190351634A1

公开(公告)日：2019-11-21

申请号：US16529698

申请日：2019-08-01

Applicant: BRIDGESTONE BANDAG, LLC

Inventor： Jason Len Gridley ,  Troy Allen Kost

IPC: B29D30/00 ,  B29D30/52 ,  B29C37/00 ,  B29D30/06

Abstract: A tire tread extractor used in the manufacture of treads includes a frame, a first nip roller rotatably associated with the frame, and a second nip roller rotatably associated with the frame. The first and second nip rollers are adapted to engage a tire tread at least partially resident in a mold. A driving mechanism associated with the first and/or second nip rollers operates to impart rotational motion thereto. The frame is configured for longitudinal movement along a substantial portion of a longitudinal length of the mold while maintaining the first and second nip rollers in a spaced relation to the mold.

公开(公告)号：US10131105B2

公开(公告)日：2018-11-20

申请号：US14365061

申请日：2012-12-14

Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN ,  MICHELIN RECHERCHE ET TECHNIQUE S.A.

Inventor： Marc Duvernier ,  Vincent Abad ,  Frederic Perrin ,  Emmanuel Custodero

IPC: B29D30/66 ,  B29D30/06 ,  B29D30/68 ,  B29D30/52 ,  B29K9/06 ,  B29K67/00 ,  B29K311/10

Abstract: Method of manufacturing a tire tread having a plurality of raised elements, each having a contact face intended to come into contact with a ground when the tire is rolling and lateral faces connected to this contact face. The method of manufacture comprises: preparing a green form of the tire; laying a cover layer over all or part of an external surface of the green tire; laying the green tire in a mold; with the mold comprising a blade, using this blade to mold a lateral face of a raised element; vulcanizing the green tire to obtain the tire cutting the cover layer using cutting means belonging to the mold; during the molding of the lateral face driving with the blade a cut part of the cover layer into the green tire so that the lateral face of the raised element is partially or fully covered.

公开(公告)号：US09937756B2

公开(公告)日：2018-04-10

申请号：US15081781

申请日：2016-03-25

Applicant: Bridgestone Americas Tire Operations, LLC

Inventor： Jon I. Stuckey ,  Justin E. Hayes ,  Chris A. Swartzwelder

IPC: B60C11/03 ,  B60C11/11 ,  B29D30/52 ,  B60C9/06 ,  B60C9/08 ,  B60C9/18 ,  B60C13/00 ,  B60C15/04

CPC classification number: B60C11/0318 ,  B29D30/52 ,  B60C9/06 ,  B60C9/08 ,  B60C9/18 ,  B60C11/0306 ,  B60C11/11 ,  B60C13/00 ,  B60C15/04 ,  B60C2011/0325 ,  B60C2200/14

Abstract: A tire includes a tire carcass and a tread extending circumferentially about the tire carcass The tread includes a plurality of tread elements disposed in a tread pattern. The plurality of tread elements have one of two different pitch lengths and are disposed in a noise-reducing pitch sequence.

公开(公告)号：US09889618B2

公开(公告)日：2018-02-13

申请号：US14395683

申请日：2013-04-19

Applicant: BRIDGESTONE CORPORATION

Inventor： Roberto Mattocci

IPC: B29D30/52 ,  B29D30/54 ,  B29D30/58 ,  B29D30/62 ,  B29D30/66 ,  B29D30/06 ,  B29D30/20

CPC classification number: B29D30/62 ,  B29D30/0662 ,  B29D30/20 ,  B29D30/52 ,  B29D30/54 ,  B29D30/58 ,  B29D30/66

Abstract: A method of producing a tire tread with lugs; the tread having a tread base, and a number of lugs projecting upwards from the tread base; and the method including the steps of: preparing a green-rubber blank tread thinner at the sides and thicker at the center to define a raised center portion; applying green-rubber blocks to the areas of the blank tread where the lugs are to be formed, which blocks rest centrally against the raised center portion; and curing the blank tread, together with the blocks, in a curing mold negatively reproducing the pattern of the tread.