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| Number | Title | Issue Date |
| 7048529 | Mould for curved panels The invention relates to a mold for the manufacture of curved insulating panels, which comprises an upper half-mold (2) and a lower half-mold (3) opposite each other. The structure of both said half-molds is formed by a respective chain of modul... | 05/23/2006 |
| 6969041 | Method of forming concrete structures using panels having flexible barriers A forming panel and method for using the same in construction of self-sustaining concrete wall structures is provided wherein a flexible barrier element is provided along a margin on the forming panel for impeding the flow of water and fine particles of a concrete m... | 11/29/2005 |
| 6932105 | Antifreezing guard for pipes A system and kit for forming an inexpensive protective plenum around pipes subject to freezing is disclosed. The system uses tubes formed of thin, flexible material, such as plastic tubes, to form the plenum. The plenum may be installed in sections with the sections... | 08/23/2005 |
| 6761555 | Device for automatically producing an opening or cavity in the side of a ceramic product during molding in a mould A device for producing an opening or cavity in the side of a ceramic product during product molding in a mould with a molding cavity delimited by a molding surface which has a window, comprising a deformable punch, joined on the window, designed to project into or r... | 07/13/2004 |
| 6530865 | Double tapered article A method of forming a molded article and a molded article itself having a passage therein which has a cross-sectional dimension adjacent an end which is less than at a location which is spaced from the end are disclosed. In the method an elongate, rigid m... | 03/11/2003 |
| 6400429 | Method for producing a liquid crystal display device A liquid crystal display device includes: a pair of substrates; polymer walls; and a display medium interposed between the pair of substrates, including a liquid crystal region partially provided with or completely surrounded by the polymer walls. The liq... | 06/04/2002 |
| 6015005 | Respective inflatable arbors for making backdraft cavity in sand core and for forming part of core lift device insertable in cavity Tooling includes an inflatable arbor for forming a backdraft cavity in a foundry sand core. A core handling device includes an inflatable arbor, similar to the one used for forming the backdraft cavity in the sand core, whereby the lifting device arbor, w... | 01/18/2000 |
| 5714080 | Self-actuating molds for vertically casting concrete pipe A gated mold for casting concrete pipe requires no wedges or bolts for securement. A core mold may be contracted by lifting at an actuation point, and expanded by resting on a base ring. An external mold may be expanded by lifting at an actuation point, a... | 02/03/1998 |
| 5679279 | Collapsible core seam cover for concrete making apparatus A shield or cover combined with a collapsible core used in machines for making concrete pipe lined with a plastic liner. The cover is mounted on the outside of the core between the core and the liner and extends the full length of the seam between the sta... | 10/21/1997 |
| 5651911 | Removable insert for forming recess A removable insert for forming a recess in wet concrete which locates a pulling iron or anchor in wet concrete, and when the concrete hardens the insert is removed, and the anchor may be engaged by a hook and cable to move the resultant concrete structure... | 07/29/1997 |
| 5433418 | Selectively-flexible mold having a shell supported by a collapsible truss structure A selectively-flexible, selectively-rigid, reusable, one-piece mold is used to fabricate a composite part having a complex shape on an outer surface of the mold. Disposed within the interior of the shell is a grid-type support truss structure having a plu... | 07/18/1995 |
| 5279491 | Molding apparatus including core for molding zero-draft hole A molding apparatus including at least two mold parts movable relative to each other between an open position and a closed position, the mold parts defining, when in the closed position, a mold cavity having the shape of an object to be molded, and an exp... | 01/18/1994 |
| 5139404 | Apparatus for making lined pipe An apparatus for making concrete pipe having vinyl liners. An expandable core is used to hold a tubular vinyl liner. The core has over-center latches which lock the core in an expanded position to hold the liner against the outside surface of the core. Th... | 08/18/1992 |
| 5137251 | Pour window for a concrete form A pour window for a metal concrete form flexible to a predetermined arcuate shape. A window panel of a generally rectangular shape forms part of a door which is pivotally mounted at one edge thereof for movement between an open and a closed position there... | 08/11/1992 |
| 5131834 | Silicone gel isostatic pressurizing bag and method of use and manufacture An isostatic pressurizing bag for consolidating a composite part has an outer flexible elastomer having a fixed resilient outside surface. The outer elastomer surrounds a closed chamber. A thermally expandable inner elastomer is located in the closed cham... | 07/21/1992 |
| 5125617 | Adjustable radius walers for forming Forms for a cylindrical wall of poured concrete are made of plywood sheets nailed to horizontally-spaced beams, to which are clamped transversely arranged walers. The walers are assembled in strings and the string are in parallel spaced relationship. The ... | 06/30/1992 |
| 5090888 | Die casting mold part A die casting mold part, which may be mounted on or applied to a die casting mold to provide for the molding and shaping of a variety of projections from the molded article and a simple and sure release from the mold of such projections including a plural... | 02/25/1992 |
| 5080576 | Apparatus for forming an internal groove in a molded part A die apparatus permits the formation of an internal recess in a molded part. The die apparatus includes first and second mold members which are movable between an open and closed position. A core pin assembly includes a first core pin element and a secon... | 01/14/1992 |
| 5029803 | Device for adapting a formwork element to given radii of a circular formwork The present invention provides for a device for adapting a formwork element, including a formwork lining and at least two formwork beams, to a given curvature of circular framework. A device includes a web engaging a space between two formwork beams and a... | 07/09/1991 |
| 5028368 | Method of forming lined pipe A method for making concrete pipe. Vinyl liners are held by an expandable liner carrying device. The carrying device is expanded so as to hold the liner in engagement with the outer surface, forming a liner/carrier assembly. Concrete reinforcing bars are ... | 07/02/1991 |
| 5022838 | Multi-axis rotational distributing apparatus Multi-axis rotational polymeric mixture distributing apparatus includes a raw material supplying portion, a supporting portion, a raw material mixing portion, a polymeric mixture distributing portion, a polymeric mixture accepting portion and a control po... | 06/11/1991 |
| 5006055 | Apparatus for manufacturing an otoplastic An apparatus for manufacturing an otoplastic. An otoplastic is manufactured directly in the ear of a hearing-impaired person in that a deformable envelope is pulled over a die or over a shell or over an overlayed over-shell. This apparatus is then supplie... | 04/09/1991 |
| 4998705 | Apparatus for forming voids in concrete An apparatus for forming voids in concrete which includes baseplates secured to a wood supporting deck or form for a concrete floor by a plurality of removable screws and a removalbe sleeve attached to each baseplate and having a height generally equal to... | 03/12/1991 |
| 4954209 | Apparatus for producing molded articles The invention is an apparatus for molding an article made of layed up materials having opposed principle surfaces, such as one that is hollow tubular shaped. In detail, the invention includes a first mold part for forming one surface of the article on whi... | 09/04/1990 |
| 4917346 | Concrete form shuttering A form for erecting structures having an plan shape, any generatrix and possibly changing wall thickness includes an inner form (1) and an outer form (2). Circumferentially closed support rings (5,6) are arranged horizontally spaced from the inner form as... | 04/17/1990 |
| 4790508 | Concrete casting form including retractable core A core form is disclosed for casting a structurally reinforced concrete structure for use on a slab with an outer container form having rigid walls extending vertically comprising a casting core positioned internal the outer form and having vertically ext... | 12/13/1988 |
| 4742985 | Formwork assembly for a poured concrete structure A formwork assembly for a poured concrete structure includes a plurality of formwork panels and girder-like members for supporting the panels. The panels comprise a concrete surface forming sheet and laterally spaced flange-like support members on the out... | 05/10/1988 |
| 4729541 | Formwork for round or polygonal construction There is disclosed a formwork for round or polygonal constructions with a formwork face having an adjustable curvature or circumference. The formwork has a chain of booms which are spaced apart from the formwork face and are composed of individual boom po... | 03/08/1988 |
| 4728073 | Formwork for forming reservoirs and pools Formwork (15) for moulding walls of reservoirs in any desired curved configuration. The formwork utilizes a flexible panel (18) having a form surface (17) on one side against which the reservoir wall may be moulded and connector means (37) on the other si... | 03/01/1988 |
| 4723751 | Inflatable form for concrete structures A cylindrical inflatable bag when inflated is used as a form for a concrete structure. A large number of parallel anchor straps extend around a portion of the cylinder in planes perpendicular to the longitudinal axis of the cylinder. Each strap is fixed t... | 02/09/1988 |
| 4621787 | Prestressable passage core In a method of using an elongate steel core for making passages in a body of castable material, preferably concrete which is cast in an outer mould, the core is prestressed prior to casting, and to disengage the core from the finished body, the prestress ... | 11/11/1986 |
| 4619433 | Apparatus for erecting arcuate walls of concrete or the like Apparatus for erection of arcuate walls of poured concrete has one or more deformable sheathings secured to turnable supports which are movably secured to one another by composite girders having alternating rigid variable-length links and fixed-length con... | 10/28/1986 |
| 4582275 | Collapsible mandrel A collapsible, cantilevered mandrel is disclosed comprising a core rotatable about a longitudinal axis, a tubular shell having a longitudinal slit to permit collapsing of the shell, means for rigidly mounting an arcuate segment of the shell to the core su... | 04/15/1986 |
| 4578028 | Expandable core pin for blow-molding a container having a neck-portion with internal attachment means A radially expandable core pin is disclosed for blow-molding a thermoplastic container having a body-portion and a neck-portion, with such neck-portion including a dispensing orifice and internal attachment means. The core pin is radially expandable to co... | 03/25/1986 |
| 4503759 | Baking plate A baking plate is provided, which is adapted to cooperate with a second baking plate to define a cavity for receiving dough to be baked. The baking plate has on one side a generally flat dough-treating surface and on the opposite side a rear surface. The ... | 03/12/1985 |
| 4477399 | Method and apparatus for manufacturing a foam insulated water heater A method for insulating a water heater with foamed insulation comprises inflating a tube in the cavity between the shell and the tank to define a boundary for the cavity into which the insulating material is injected. The device is deflated after the foam... | 10/16/1984 |
| 4462787 | Cantilevered mandrel assembly A rotatable mandrel for making cylindrical molded articles has a plurality of aligned identical and collapsible cylindrical mandrel sections supported upon a cantilevered shaft, the cylindrical sections having a truss supported relatively thin exterior wa... | 07/31/1984 |
| 4384839 | Core mold for bent pipes A core mold for bent pipes including a main body formed of a plurality of hollow cylindrical members connected to each other, the angle between adjacent hollow cylindrical members being fixable at any desired value. The main body may be mounted to a shaft... | 05/24/1983 |
| 4310138 | Self-supporting shrinking mandrel A self supporting shrinking mandrel including an actuator with a plurality of legs, each terminated by a cross member. The legs and cross members are inserted into grooves of a plurality of support members. The grooves and cross members cooperate to hold ... | 01/12/1982 |
| 4278490 | Sleeve for changing diameter of collapsible mandrel A collapsible mandrel having a longitudinally slit tubular shell providing a molding surface for glass fiber reinforced plastic pipe is provided with a removably mountable longitudinally slit sleeve as a molding surface for pipe of larger diameter.... | 07/14/1981 |
