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| Number | Title | Issue Date |
| 4444715 | Method of making tires A radial tire having an annular cavity is built with precision and positioned between the upper and lower mold sections of a tire press. An upper center mechanism has an inflatable clamping bladder for gripping the upper bead of the tire which is suspende... | 04/24/1984 |
| 4444612 | Method and apparatus for the injection molding and vulcanization of vehicle tires A vehicle tire crown portion 10 including a tread 11 is injection molded and prevulcanized in a closed annular mold cavity 17 defined by a segmented outer mold 16 clamped together by a locking ring 22 and a segmented core 19 pressed against the outer mold... | 04/24/1984 |
| 4406845 | Method for restoration and re-utilization of discharged gas and arrangement employed therefor A method for restoration and re-utilization of discharged gas for use in a vulcanization employing inert gas in part of the vulcanization of elastomer products, which includes the steps of restoring a mixture of used inert gas discharged from a vulcanizin... | 09/27/1983 |
| 4405555 | Process and device for vulcanizing power transmission belts A process is provided for vulcanizing a vulcanizable endless belt which is substantially V-shaped in cross-section, substantially uniformly, by heating the belt through its minor base and converging sides and then cooling the belt from its minor base and ... | 09/20/1983 |
| 4402356 | Tire for heavy transport vehicles, the crown reinforcement of which has thermocontractable circumferential cables and process for manufacturing same A tire, particularly for aircraft, has a crown reinforcement formed of plies of circumferential cables having a relative extensibility upon rupture of at least 8%, preferably between 10% and 26%, when the vulcanized tire is mounted on its service rim but ... | 09/06/1983 |
| 4382052 | Process for vulcanization of elastomer products An improved process for vulcanization of elastomer products which includes the steps of heating under pressure, the elastomer product mounted in a metal mold by supplying vulcanizing medium, suspending the supply of the vulcanizing medium when the elastom... | 05/03/1983 |
| 4371483 | Apparatus and process for vulcanizing, adjusted for variable location of point of least cure An apparatus and process are provided for delivering the precise optimum number of cure equivalents to the exact point of least cure for each tire, though the location of the point varies from one tire to another tire of different geometry, and may vary i... | 02/01/1983 |
| 4370283 | Process for vulcanization of elastomer products An improved process for vulcanization of elastomer products which includes the steps of heating under pressure, the elastomer product mounted in a metal mold by supplying vulcanizing medium, suspending the supply of the vulcanizing medium when the elastom... | 01/25/1983 |
| 4370120 | Compacting press with expandable body An expandable member is disclosed that includes a molded body of elastomeric material with a core embedded therein. At least a portion of the core is not bonded to the body. A fluid conduit is provided through which fluid can be injected between the core ... | 01/25/1983 |
| 4347212 | Method for forming a tire Separable mold sections of a tire forming machine are brought together to form a tire cavity within which a preformed tire band is expandable against the inner surface of the cavity side wall. During the tire shaping operation, air is forced by the expand... | 08/31/1982 |
| 4338069 | Tire press A tire curing press has a loader assembly comprising a bead grip for engaging and lifting the axial interior of the upper bead of a green tire and a tread positioning ring movable axially to an adjusted position to engage the tire tread shoulder and to fo... | 07/06/1982 |
| 4314964 | Method for the manufacture of a cycle or auto-cycle wheel rim A method for manufacturing a cycle or auto-cycle wheel rim includes employing a tubular braided fibre glass sleeve which is inflated internally so as to conform its shape to the inside of a mould. An inflatable sleeve is placed inside the braided glass fi... | 02/09/1982 |
| 4304618 | Method of manufacturing radial tire carcass employing a restricting member A pneumatic radial tire is made by applying a restricting member circumferentially around a cylindrical radial tire carcass. Shaping pressure inflates the carcass to a toroidal shape having a section height less than a predetermined section height so that... | 12/08/1981 |
| 4268475 | Method of producing hollow moulded members Production of hollow shaped bodies made of pourable and hardenable material, particularly polyurethane tires, in a mold cavity having a deformable membrane. The membrane is expanded to fill the mold cavity and expel air therein. Thereafter an amount of ma... | 05/19/1981 |
| 4239723 | Tire mold press operating method In a tire mold press having a steam dome defining a chamber in which steam applies heat to the exterior of a tire mold, condensate which accumulates in the top center plate is simply and effectively removed after the end of the curing cycle and before the... | 12/16/1980 |
| 4222424 | Lug tires with uniform base rubber gauge A lug tire for agricultural machines and constructional vehicles provided with at least one discontinuous portion formed by decreasing a thickness of a base rubber at both end regions of a tread and arranged along the circumferential direction of the tire... | 09/16/1980 |
| 4222721 | Apparatus for curing tires and the like Apparatus for curing tires or similar vulcanized products in a press or autoclave equipped with separable molds with inserted bladders, tubes, bags or bladderless center mechanisms, wherein means are provided to purge the high temperature hot water curing... | 09/16/1980 |
| 4209483 | Method of making a notched transmission belt A method of making a notched variable speed belt or a notched V-belt by placing the layers of the belt around a smooth cylindrical mold, placing an endless elastomeric sleeve having ribs on its inner surface, around the mold and layers thereon and applyin... | 06/24/1980 |
| 4201744 | Method of making tires A tire prepared by molding in one or more first molds of at least two separate annular tire body parts of an elastomer composition and stabilizing same, a set of said tire body parts forming a complete tire body exclusive of tread, transferring said parts... | 05/06/1980 |
| 4185056 | Method of making a flexible elastomeric matrix and method of retreading tires therewith A flexible, integrally formed elastomeric matrix is formed using an internal mold such as an inflated tire or carved or molded rigid facsimile thereof covered with a fabric venting network and an overlying layer of elastomeric material. The assembly is cu... | 01/22/1980 |
| 4172868 | Method of retreading a tire including tire diameter foreshortening by vacuum grip This disclosure relates to a method of retreading a tire by inserting a tire and an annular bladder between a pair of open matrices with marginal portions of the bladder projecting beyond beads of the tire and resting upon peripheral edge portions of axia... | 10/30/1979 |
| 4169877 | Centering a tire in a mold The production of a very large tire by expanding the uncured unrestrained carcass of the tire to engage its crown region with the radially inward surface of a rigid circumferentially continuous centering ring. The ring and the uncured carcass together are... | 10/02/1979 |
| 4154790 | Pneumatic tire manufacture A method of moulding a tire in a mould in which the retaining rings for the bead formation of a green tire are variable in diameter to allow for increase in the bead diameter of the finished tire relative to its green state and to prevent damage caused by... | 05/15/1979 |
| 4147751 | Method of making a pneumatic tire A method of increasing the tread and sidewall life of a radial belted pneumatic tire with an open end belt in which the tire is cured in a mold with the central portion of the tread in a curved configuration having the same tread radius and the margins of... | 04/03/1979 |
| 4142930 | Method of fabricating large tires A very large off-the-road type tire having a plurality of bead cores and a plurality of bias laid carcass plies, which when in the configuration in which it was cured has a section height which is substantially less than the section height of the tire whe... | 03/06/1979 |
| 4126657 | Method for curing tires and the like A method and apparatus for curing tires or similar vulcanized products in a press or autoclave equipped with separable molds with inserted bladders, tubes, bags, or bladderless center mechanisms. During the principal shaping and vulcanizing period of the ... | 11/21/1978 |
| 4124679 | Method of building a tire with unequal bead diameters A method of building an unequal bead diameter tire with conventional components and contour lengths which are substantially equal, the contour lengths being measured along the neutral axis of the carcass plies between the beads and a plane containing the ... | 11/07/1978 |
| 4117053 | Method of retreading a tire utilizing an annular sealing gap This disclosure relates to a method of retreading a tire by inserting a tire and an annular bladder between a pair of open matrices with marginal portions of the bladder projecting beyond beads of the tire and resting upon peripheral edge portions of axia... | 09/26/1978 |
| 4097565 | Tire press and mold leakage control Method and apparatus for curing a tire having an internal cavity using as heat and fluid pressure media first steam and then cooler inert gas. The time rate of pressure loss in the cavity is determined in each tire curing cycle by closing the cavity so as... | 06/27/1978 |
| 4070436 | Method of manufacturing a pneumatic tire This disclosure relates to an improvement in the "wide stance" method of manufacturing a pneumatic tire. In this method the space between the two annular wire bead bundles of the tire is substantially greater than the space between the beads in their oper... | 01/24/1978 |
| 4029730 | Cordless vehicle tire A cordless vehicle tire of an elastomeric polyurethane sidewall adhered to a tread of an elastomeric ethylene/propylene/non-conjugated diene polymer wherein the polyurethane is the product of reacting an organic diisocyanate with a poly(alkylene oxide) gl... | 06/14/1977 |
| 4012479 | Method of forming belted radial tires from a cylindrical tire band Discloses method of forming a belted radial tire from a cylindrical radial green tire band having biased corded belts which are adapted to pantograph and expand circumferentially as the tire band is shaped to be molded into a finished tire without "S-ing"... | 03/15/1977 |
| 3989791 | Method and apparatus for moulding tires employing pivoting tread forming segments To permit moulding of a rigid breaker tire in a single-phase diaphragm press without damage caused by axial movement of the tread-forming segments relative to the tire carcass in the mould the tread segments are mounted to pivot about fixed longitudinal a... | 11/02/1976 |
| 3974018 | Device for making pneumatic tires A device for making a pneumatic tire including an outer mold and a core for making tread rubber having a high lug or deep tread pattern and an inflatable bladder for use in joining the tread rubber to the tread portion of a green case when the green case ... | 08/10/1976 |
| 3972978 | Process for automatically discharging a tire from the curing mold A method for discharging a cured tire from a mold in which method the lower sidewall of the tire is disengaged from the lower section of the mold by raising the tire with respect to the position in which it had been cured while maintaining the sections of... | 08/03/1976 |
| 3947540 | Method for curing tires, especially large-size tires A method for curing tires especially adapted for curing very large-sized or so-called giant tires which have not been generally in such demand as to warrant mass production characterized by holding the curing mold in a stably closed locked condition durin... | 03/30/1976 |
| 3935045 | Method of retreading a tire A "full cap" method of retreading a tire with a previously molded and vulcanized tread in combination with unvulcanized rubber material which is placed adjacent the precured tread in the shoulder regions, or upper sidewall areas of the tire. Metal rings a... | 01/27/1976 |
