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| Number | Title | Issue Date |
| 7160090 | Tire mold with helically extending heating conduit An apparatus for transferring heat into a product, such as a tire, formed at least in part by molding is provided. The apparatus includes a mold that has a central axis with a forming surface disposed radially outward from the central axis. A heating conduit is incl... | 01/09/2007 |
| 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 turbulence generating devices include apertures to guide air from a supply du... | 12/19/2006 |
| 7114935 | Curing envelope for and method of retreading tires The present invention provides for proper air bleed without using air wicking fabric strips and/or the perforated polyethylene material or the like. Instead, an inside surface of a curing envelope is molded with a unique embossed pattern which is designed to channel... | 10/03/2006 |
| 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 mechanism (16) including a front coil (21) disposed so... | 08/01/2006 |
| 6943328 | 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 mechanism (16) including a front coil (21) disposed so... | 09/13/2005 |
| 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 assembly in a C mold comprising a tread ring and a sidewall ring and curing... | 03/29/2005 |
| 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 sidewall and the peripheral tread of the tire assembly. A second portion ... | 08/31/2004 |
| 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 elastomeric annular sealing rim captured on the rim. An inflatab... | 06/18/2002 |
| 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 a tire. A plurality of grooves are molded in a tire confro... | 07/17/2001 |
| 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 a first motor, the buffing tools are carried by a second ... | 06/26/2001 |
| 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 the extruded elastomer. The extruder has at least one die ... | 07/18/2000 |
| 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 reinforced with a stretchable fabric material and engagable wit... | 05/02/2000 |
| 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 from the first shoulder and a second uncured wing portion ext... | 08/03/1999 |
| 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 accelerate the cure rate and uncured tire compound placed o... | 06/01/1999 |
| 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 main portion. The pair of first inserts is capable of moldin... | 05/25/1999 |
| 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 mould is designed with an elastic and flexible annular disc me... | 06/16/1998 |
| 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 main portion. The pair of first inserts is capable of moldin... | 01/20/1998 |
| 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 includes a rod pivotally mounted to the handle and an adjustab... | 01/06/1998 |
| 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 tire is mounted; an envelope which is annular and covers an o... | 12/16/1997 |
| 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 frame. Each of the curing envelope engaging means is movabl... | 08/19/1997 |
| 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 to a respective matrix segment holder. Each matrix segment... | 02/27/1996 |
| 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 retreated tire means a tire made by linking a plate rubber member... | 10/31/1995 |
| 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 second lip defining the extrusion die. The first lip, positio... | 10/17/1995 |
| 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 (10) includes a motor (M) for rotating the tire carcass (16),... | 08/30/1994 |
| 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 face-to-face abutment in a closed position of the mold cavit... | 04/20/1993 |
| 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 disposed rigid gate-like frame having a central opening of a... | 10/13/1992 |
| 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 fork and tongue. Laterally offset circumferentially overlap... | 09/29/1992 |
| 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 to tire carcass (10) having a cushion gum (16) disposed th... | 09/29/1992 |
| 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 envelope draped over the tire carcass and a tread strip be... | 02/18/1992 |
| 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 envelope. The curing ring device which seals the envelope around t... | 10/30/1990 |
| 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 (28) from the mold. Passages (40) in the mold communicate fl... | 01/23/1990 |
| 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 devices for discharging jets of the solution; a movable arm ... | 11/21/1989 |
| 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 each sidewall member with a flexible sidewall mold, placing... | 09/26/1989 |
| 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) or by forming the ends on both sides of the opened section ... | 08/29/1989 |
| 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 envelope. The curing ring device which seals the envelope around t... | 02/28/1989 |
| 4780949 | Tire retreading equipment A tire retreading tube for use with a tire retreading rim formed from a pair of axially-adjacent rim sections, one of said sections having a cutout for the reception of the valve stem extending from the tube body and being formed with threads adjacent the... | 11/01/1988 |
| 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 tire casing to form a new tread layer. The accessory essen... | 09/13/1988 |
| 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 vulcanization in the vulcanization press; and whereby the thus ... | 06/02/1987 |
| 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 the tire. A bottom mold cavity forming member having a rin... | 03/31/1987 |
| 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 carcass. Grills are attached to the opposite sides of the... | 12/02/1986 |
