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7572850 |
Rubber composition and tire comprising same
A rubber composition comprising the following compound: R1—NH-phenyl-NH—R2 where the amino moieties occupy the 1 and 4 positions of the phenyl ring, and R1 and R2 are selected from the group con...
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7150303 |
Autoclave for curing retreaded tires
An improved autoclave for curing retread tires includes a chamber with circulating air flow having turbulence generating devices located in a middle length-wise portion of the chamber. The...
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7084380 |
Raw tire preheating method and apparatus therefor
A raw tire-preheating method and apparatus for preheating a raw tire uniformly over all the areas with a reduced running cost. The raw tire-preheating apparatus comprises a tread section-preheating...
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6872271 |
Process for retreading solid tires
An improved means for retreading a solid tire is disclosed. The retreading means comprises wrapping uncured rubber around the periphery of the tire, clamping the tire body and uncured rubber...
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6783343 |
Two-piece retread envelope
A retread autoclave envelope for a vehicle tire casing is a two-part vacuum envelope. A first part has a generally J-shaped cross-section which provides an annular cavity for receiving a first...
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6406282 |
Sealing ring and rim assembly for use in retreading tires
A sealing ring and rim assembly for use with an outer curing envelope to retread a tire casing. The assembly includes a rigid annular rim having a fixed diameter and a resiliently expandable...
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6261409 |
Inner curing envelope for use in retreading tires
An inner curing envelope for use during a tire retreading process. The inner curing envelope is placed within the inside of a tire casing and cooperates with an outer sealing envelope for encasing...
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6251204 |
Tire retreading machine
A machine for retreading tires, including a rotary chuck on which the tire to be treated is mounted and buffing tools, in which the chuck is mounted on a first carriage guided in rails and moved by...
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6089844 |
Extrusion device for retreading tires
An extrusion device for tires has a heatable extruder for extruding and supplying an elastomer to a prepared and rotatably supported carcass being rotated in a direction of rotation for entraining...
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6056852 |
Retreading wick and method of manufacture
A wick for use in forming a vacuum between a curing envelope and a tire during a tire retreading process, and a method for the manufacture of the wick. The wick is provided by a pad of rubber...
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5932153 |
Tire tread
A tire tread that is applicable to retread a worn tire carcass. The tire tread includes a cured tread portion having a first shoulder and a second shoulder. A first uncured wing portion extends...
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5908523 |
Method for recapping vehicle tires
A method, apparatus and article of manufacture for tires in order to salvage used tire casings of tires and recap them with a better mechanical and chemical bond involving the use of hot water to...
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5906835 |
Removable mold insert for wing or wingless type precure tread production
A method and apparatus for producing both wing-type and wingless tire treads from a single mold. The mold includes a main portion, a pair of first inserts which are selectively attachable to the...
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5766644 |
Pressure compression mould for the production of tires
The pressure compression mould for the production and/or revulcanisation of tires forms a hollow space where the pressure and the temperature can be regulated. Each sidewall of the compression...
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5709830 |
Method for winged or wingless type precure tread production
A method and apparatus for producing both wing-type and wingless tire treads from a single mold. The mold includes a main portion, a pair of first inserts which are selectively attachable to the...
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5705023 |
Adjustable recapping ring
An adjustable recapping ring includes a pivoted handle mounted to one end of a split ring. A rigid link is releasably connected between the handle and the remaining end section. The rigid link...
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5698064 |
Apparatus for manufacturing recapped tire
An apparatus for manufacturing a recapped tire includes: a vulcanizer in which is filled a fluid for vulcanization for adhering by vulcanization a base tire and a tread; a rim to which the base...
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5658419 |
Curing envelope spreader for use in a tire retreading process
A curing envelope spreader used to encase a tire during a tire retreading process. The curing envelope spreader includes a frame and a plurality of a curing envelope engaging means mounted to the...
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5494551 |
Segmented matrix apparatus for forming a tread pattern in a retread tire
Apparatus for forming a tread pattern on a retread tire casing includes a plurality of rigid matrix segments each having a contoured tread pattern thereon. Each matrix segment is removably secured...
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5462630 |
Apparatus for producing precured retreaded tire
The present invention relates to a method of producing a precured retreaded tire, etc., and the purpose of the invention is to produce the tire with saving space and power. Here, a precured...
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5458727 |
Direct extrusion cushion-gumming and skive-filling of tire casings for retreading
A tire retreading device has a tread feeding device for feeding the tread to a tire casing and an extruder for extruding a cushion gum layer onto the tire casing. The extruder has a first and a...
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5342473 |
Apparatus for applying hot cushion gum to a tire carcass
Apparatus (10) for applying hot cushion gum (E) in a strip (12) of predetermined thickness and width to the crown surface (14) of a tire carcass (16) having a sagittal plane (68). The apparatus...
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5204036 |
Method of molding tires
A method for molding articles, particularly tires, of different diameters/circumferences including a plurality of pitches defining a mold cavity, the pitches having transverse faces in generally...
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5154794 |
Tire envelope expander
An envelope expander for mounting an annular envelope of a flexible resilient material upon a tire supported upon a tire support with the tire axis in a horizontal position includes a vertically...
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5151148 |
System for retreading tires
A method and system for retreading tire carcasses (10) with precured treads utilizing time and temperature in conjunction with an envelope pressure system. A precured rubber tread (12), is applied...
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5151150 |
Manually contractable ring for sealing an envelope against a bead of a tire during retreading
A split ring assembly for sealing an envelope against a bead of a tire to be retreaded includes a one-piece split metal ring having aligned overlapping end portions in the form of an interfitting...
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5089079 |
Retread ring
A retread curing ring assembly that includes a conical frustum seat insertable within an opening of a tire carcass to be cured. The retread curing ring captures the edge portions of an elastomeric...
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4966640 |
Adjustable tire recapping apparatus
A curing ring device for a precured tread rubber recapping apparatus of the type wherein a tire assembly with a strip of tread rubber in place on a tire carcass is surrounded by a flexible...
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4895502 |
Tread ring venting and pressurization system
Tire mold vents (34) in communication with a sealed cavity (35) are pressurized for limiting the quantity of rubber entering the vents (34) and for assisting the stripping of the vulcanized tire...
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4881488 |
Equipment for automating the distribution of preparatory solution used in the recapping of tire treads
A conveyor on which tires are suspended, with sufficient travel to ensure that they dry out following treatment, for conveying them through a distribution chamber for the solution, equipped with...
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4869759 |
Method and apparatus for replacing sidewall of tire
A method and apparatus for installing sidewall replacement members on a used tire carcass by attaching sidewall members to the pre-buffed and cement coated sidewalls of the tire carcass, covering...
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4861247 |
Expandable ring for sealing an envelope against the bead of a tire to be retreaded
A spreadable ring for sealing an envelope at the bead of the tire to be retreaded during the pressure and heat treatment in an autoclave. The ring is spread with the aid of cut-outs (a lap joint)...
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4808256 |
Tire recapping apparatus
A curing ring device for a precured tread rubber recapping apparatus of the type wherein a tire assembly with a strip of tread rubber in place on a tire carcass is surrounded by a flexible...
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4770741 |
Accessory for a tire tread builder
The invention relates to an accessory for an "orbitread" tread builder, or the like, whereby waste rubber crumbs or buffing dust can be used for the formation of a tread strip to be applied onto a...
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4670082 |
Machine for retreading pneumatic tires
This invention relates to a method for applying a tread to a tire, whereby around a toroidal tire a layer of non-vulcanized rubber is applied, which will form the tread area of the tire after...
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4653992 |
Cure press for retreading tires
A segmented matrix cure press retreads pneumatic tires by vulcanizing a tread strip onto a tire casing. The press centers the tire and provides a tailored support to the entire casing periphery of...
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4626300 |
Method and apparatus for vulcanizing retreaded tires
The invention pertains to the method and apparatus for vulcanizing retreaded tires wherein an annular precured tread is bonded to a tire carcass by bonding material interposed between the tread and...
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4624732 |
Tire envelope sealing apparatus for recapping tires
A device for use in vulcanizing a premolded, precured tire tread to a tire casing in a tire retreading operation, for sealing a retreading envelope against the tire carcass in the bead area of the...
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4600467 |
Apparatus and method for tire recapping
In combination with a tire casing, including a pre-formed, pre-cured, or uncured tread disposed about its periphery, and a curing envelope covering said tread and at least the outwardly facing side...
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4588460 |
Method and apparatus for recapping a tire with a flexible segmented mold
A method and apparatus for retreading a tire includes a mold segment (14) having open ends (16) and (18). A tire carcass (10) has a layer of uncured rubber (12) built up on the surface thereof. The...
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4583928 |
Apparatus for rebuilding portions of molded elements, particularly vehicle tires
As arc section of the casing 11 of a tire 10 to be retreaded is engaged on the outside by a mold element 15 defining a hollow mold chamber 17 and on the inside by a mushroom shaped counter mold...
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4579619 |
Tire retreading apparatus
A retreading curing ring is disclosed. The ring includes a body member which defines a circular platform. A plurality of clamps are mounted at circumferentially spaced locations on the body...
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4559093 |
Method for retreading vehicle tires
A method for retreading vehicle tires. A carcass is provided with a prevulcanized tread and an unvulcanized tie-gum layer between the carcass and tread. A microwave applicator is located above the...
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4557775 |
Tie-gum layer for retreading vehicle tires
A tie-gum layer for retreading vehicle tires. In carrying forth retreading of a vehicle tire, a prevulcanized carcass is provided with a prevulcanized tread and an unvulcanized tie-gum layer...
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4529367 |
Universal tubeless tire curing apparatus
Apparatus usable with a tire mold for curing large off-the-road tubeless tires having varying bead-to-bead spacing. The apparatus includes a lower barrel which supports a vertically moveable...
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4323414 |
Self-sealing curing rim for tubeless earthmover tire
A curing rim for a vehicle tire is shown. A flanged first sleeve (13) is adapted to seal the bottom bead of a large tubeless tire (10). A flanged sealing sleeve (14), having a cylindrical inner...
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4299647 |
Tire retreading apparatus
Annular envelope-sealing members are permanently affixed to and carried by the rim means upon which an envelope-enshrouded tire is mounted preparatory to its treatment within a heated pressure...
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4298420 |
Locking device for curing rims
A curing rim comprising two abutting, coaxial, relatively rotatable sleeves (11, 12), one having radially inward bosses (20) and the other having axially projecting hooks (21) which can rotate into...
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4298321 |
Equipment for the injection molding of motor vehicle tire treads
The invention provides a process for the injection molding of treads on a tire carcass which comprises feeding an elastomeric composition for molding the tire's tread to a plurality of equalization...
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4274897 |
Method and apparatus for vulcanizing tires
In a method and apparatus for securing a pre-cured tread to a tire during vulcanization to retread the tire, a sealing grid having annular rings disposed thereon to contact the sides of an envelope...
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