Abstract: A fixture plate includes a base having a contact face configured to support a dental model having a model identifier on a bottom surface. A bore extends through the base to one or more channels formed in the contact face and that extend from the bore. A viewing port extends through the base and has a transparent material inserted therein to seal the viewing port at the contact face. The viewing port and the transparent material enable the model identifier to be accessed from underneath the contact face when the dental model is on the contact face. A protrusion extends from the contact face and is configured to interface with an aperture of the dental model to retain the dental model in a specific orientation. The channels are configured to provide a suction force applied through the bore to hold the dental model against the contact face.

Abstract: A dry powder inhalation treatment for pulmonary arterial hypertension includes a dose of dry particles comprising greater than 25 micrograms of treprostinil enclosed in a capsule. The dry particles can include treprostinil, a wetting agent, a hydrophobicity modifying agent, a pH modifying agent and a buffer. A method of treating a patient having pulmonary arterial hypertension includes providing a patient a dry powder inhaler, providing the patient at least one capsule for use in the dry powder inhaler, the capsule including at least 25 micrograms of treprostinil.

Abstract: A mold base of an embodiment is a mold base for use in manufacture of a mold that has a porous alumina layer over its surface, including: a base; and an aluminum alloy layer provided on the base, wherein the aluminum alloy layer contains aluminum, a non-aluminum metal element, and nitrogen. The aluminum alloy layer of the mold base of an embodiment of the present invention has high specularity.

Abstract: The invention relates to a mote molding machine which comprises a molding chamber (3), a front plate (1) closing the molding chamber at a front end and a rear plate (2) closing the molding chamber (3) at a rear end, opposite the front end. The plates shift gradually during the mote compression and extraction phases. The machine comprises a first shifting system for shifting the front plate and which comprises at least one first electric motor (4), and a second shifting system for shifting the rear plate and which comprises at least one second electric motor (5).

Abstract: A nano pattern writer includes an array of nano needles extending from a groove in a substrate. A first portion of each nano needle is located in a respective groove of the first layer and the second portion extends from the groove. The nano pattern writer includes a second layer covering the first layer such that the first portion of the nano needles is secured between the first layer and the second layer.

Abstract: An apparatus for the preparation of pulp molded plate includes a press and a three-piece mold including an upper die (1), a surrounding frame (2) and a lower die (3), wherein one of the dies is a moving die and the other is a fixed die, and lower die is always within the press, and moves in relation to the upper and lower dies. The apparatus also includes a rigid matrix and a flexible punch with a retractable die bar, which are installed respectively on the upper die and lower die, so as to prepare a heterotypic pulp-molded plate with a convex part. Also disclosed is a pulp molded plate prepared by this preparation apparatus.

Abstract: Embodiments of the disclosure relate to a mold for making a membrane. A mold may include a cylindrical female portion having a diameter D. The female portion may include a concave face having substantially the same diameter D as the lower portion and a radius of curvature R. The mold may also include a cylindrical male portion having a diameter substantially equal to D. The male portion may have a central cylindrical portion with a height H extending from the lower terminus and a diameter of D-G, wherein G is the annular thickness of a spacing gap extending radially outward from the central portion. The male portion may also have a centered, convex lower face with a diameter of D-G and a radius of curvature R. The mold may also include a tubular body portion support member configured to receive a portion of the female and male portions.

Abstract: A mold for nanoimprint lithography assisted by a determined wavelength is disclosed. According to some aspects, a layer made from a first material including, on a first face, a layer made from a second rigid material in which n structured zones with micrometric or nanometric patterns (n?1) are made, and, on the face opposite said first face, a layer made from a third rigid material in which n recesses are formed, opposite the n structured zones. The n recesses are filled with a fourth material to form n portions. The transmittance at the determined wavelength of the layer of third material is lower than the transmittance of any one of the n portions; and the transmittance of the layers of first, second, and third materials at the determined wavelength ?det is such that the transmission of a light with determined wavelength ?det through said layers is lower than the transmission of the light through any one of the n portions and the layers of first and second materials.

Abstract: A transfer device that transfers a fine transfer pattern formed on a master mold to a molded material, includes a first transfer unit that transfers the fine transfer pattern formed on the master mold to a replica mold made from a material that transmits light; and a second transfer unit that transfers a fine transfer pattern formed on the replica mold by the first transfer unit to the molded material.

Abstract: A laminate nanomold includes a layer of perfluoropolyether defining a cavity that has a predetermined shape and a support layer coupled with the layer of perfluoropolyether. The laminate can also include a tie-layer coupling the layer of perfluoropolyether with the support layer. The tie-layer can also include a photocurable component and a thermal curable component. The cavity can have a broadest dimension of less than 500 nanometers.

Abstract: A laminate nanomold includes a layer of perfluoropolyether defining a cavity that has a predetermined shape and a support layer coupled with the layer of perfluoropolyether. The laminate can also include a tie-layer coupling the layer of perfluoropolyether with the support layer. The tie-layer can also include a photocurable component and a thermal curable component. The cavity can have a broadest dimension of less than 500 nanometers.

Abstract: An imprint method for imprinting a pattern of a mold onto a resin material on a substrate. The imprint method includes a step of forming a processed area in which an imprint pattern corresponding to the pattern of the mold is formed, and an outside area formed of a periphery of the processed area, by bringing the mold into contact with the resin material formed on the substrate, so that a portion of the resin material is extruded from the processed area into the outside area, a step of forming a protection layer for protecting the processed area, and a step of removing a layer of the resin material in the outside area, while the imprint pattern formed on a layer of the resin material in the processed area, is protected by the protection layer, so as not to be removed.

Abstract: The present invention aims to provide a molding machine which allows a simplification of a sand filling operation, and the prevention of the formation of a bridge and an air channel in the sand tank, so that the sand filling operation of the molding machine being able to be performed steadily.

Abstract: A method for operating a rotary press, comprising a rotor rotatably driven about a vertical axis that has a die-plate and upper and lower rams which, while being guided vertically in guides of the rotor, interact with holes of dies in the die-plate wherein at least one compression station is provided and has an upper and a lower pressing roller past which the presser rams run along and by which they are moved towards the die-bore for the purpose of compacting the material in the die-hole, wherein the upper and lower rams are lifted subsequent to the compression procedure, causing the lower ram to eject a compact from the die and the compact to be stripped by a stripper in the direction of a discharge chute, characterized in that while an compact ejection procedure is under way the upper ram stands upright on top of the compact and is lifted therewith and the stripper seizes the compact laterally while the upper ram is still standing upright on top of the compact.

Abstract: A method of making a golf ball having a secondary surface texture created on the fret areas by the dimple making procedure. The secondary surface is created on a hob prior to the primary dimple pattern being formed therein, and which largely obliterates the secondary surface texture except for the fret areas and the outer inside surface of the perimeter of the dimples where the depth of the dimple is less than the depth of the secondary surface texture.

Abstract: An apparatus comprises a molding unit having a punch and a mold cavity movable along a path between an open position in which said punch and said mold cavity are distanced apart from each other to receive a dose of plastics therebetween, and a closed position in which said punch and said mold cavity interact to form an item by pressing said dose, said punch being kept not above said cavity along said path.

Abstract: A laminate nanomold includes a layer of perfluoropolyether defining a cavity that has a predetermined shape and a support layer coupled with the layer of perfluoropolyether. The laminate can also include a tie-layer coupling the layer of perfluoropolyether with the support layer. The tie-layer can also include a photocurable component and a thermal curable component. The cavity can have a broadest dimension of less than 500 nanometers.

Abstract: The present invention includes a template for patterning liquids disposed on a substrate. The template includes a body having opposed first and second surfaces with one surface having at least one recess and the other surface having a patterning region. In one embodiment, the template may be mounted to a fluid chamber having an inlet and a throughway. The template may be connected to the throughway and the inlet is connected to a fluid source.

Abstract: A method for manufacturing a nano pattern writer includes forming one or more grooves on a first layer, depositing a substance on the first layer to form a film on the first layer, polishing the film on the first layer to thereby form a patterned film that fills the one or more grooves on the first layer, placing a second layer over the patterned film to thereby form a layered structure interposing the patterned film between the first layer and the second layer, and removing a part of the first layer and the second layer to thereby expose portions of the patterned film.

Abstract: There is provided a nanoimprint apparatus. The nanoimprint apparatus transfers a pattern formed on a surface of a mold to a transfer layer which is formed partially or entirely on a side surface of a substantially cylindrical or columnar substrate. The nanoimprint apparatus includes: a first jig which is in contact with the substrate 102; a second jig which rotatably supports the first jig; a press unit which is connected to the second jig to press the substrate on the mold 104 through the first and second jigs; and a movable holding unit which holds the mold and moves the mold 104 in a direction substantially perpendicular to a pressing force.

Abstract: Disclosed herein are a stamper which has anodized alumina formed on the surface thereof and which will not cause macroscopic unevenness or color unevenness on the transcribed surface; a method for producing the same; and a method for producing a molded material without macroscopic unevenness or color unevenness on the transcribed surface thereof by using such a stamper. The stamper includes alumina which has a microasperity structure and which is formed by anodization on the surface of a prototype aluminum mold having an aluminum purity of 99.5% or more, an average crystal-grain diameter of 1 mm or less, and an arithmetic mean surface roughness Ra of 0.05 ?m or less. The use of this stamper enables the production of a molded material which does not have macroscopic unevenness or color unevenness on the transcribed surface thereof and which is suitable for use as an antireflection article and the like.

Abstract: [Problems] To provide equipment for molding a mold with a molding flask, which can easily be used with a mold molding auxiliary tool such as a sleeve on a model plate and, at the same time, can realize high productivity, is less likely to cause the wear of the model plate, and can mold a mold with a molding flask having uniform strength. [Means to solve problems] The equipment for molding a mold with a molding flask, is characterized in that it comprises: a means for introducing molding sand that introduces molding sand into a molding flask and a filling frame, using compressed air, the molding flask and the filling frame being mounted on a model plate in a superimposed state; the means for introducing molding sand comprising a shielding means having a plurality of feet that can enter the filling frame and can be temporarily held at the position that is spaced apart at the predetermined distance from the model part of the model plate, which model part faces the plurality of feet.

Abstract: An object of the present invention is to provide a stamper for transferring fine pattern and a method for manufacturing the stamper, the stamper has a fine structure layer to improve a continuous transferring property of the resinous stamper, and to allow accurate and continuous transferring. In order to achieve the above object, the present invention provides a stamper for transferring fine pattern, including: a fine structure layer on a supporting substrate, in which the fine structure layer is a polymer of a resinous compound whose principal component is silsesquioxane derivative having a plurality of polymerizable functional groups.

Abstract: The present invention includes a conforming template for patterning liquids disposed on substrates. The template includes a body having opposed first and second surfaces. The first surface includes a plurality of recessed regions with a patterning region being disposed between adjacent recessed regions. Specifically, the recessed regions define flexure regions about which each patterning region may move independent of the remaining patterning regions of the template. In one embodiment the template is mounted to a fluid chamber having an inlet and a throughway. The template is connected to the throughway and the inlet is connected to a fluid source to facilitate deformation of the template to conform to a profile of a surface adjacent thereto.

Abstract: An apparatus for the forming of sand cores adapted to convey sand, tamp a sand core, and militate against an undesirable exposure of uncured sand to catalyst gases, while providing a non-tortuous flow path for sand. The apparatus for the forming of sand cores comprises a core box, a gassing manifold, a blow tube, a sand magazine, a connector tube, and a tamping pin.

Abstract: The present invention relates to a master for manufacturing a mold, a mold for manufacturing a display device, a manufacturing method of the mold using the master, and a manufacturing method of the display device using the mold in an imprinting process. A master for manufacturing a mold according to one or more embodiments of the present invention comprises a substrate, and a master pattern formed on the substrate and comprising an embossed portion, wherein the embossed portion comprises levees formed on both edges thereof. A side surface of the embossed portion may form an angle of about 60 to 90 degrees with a surface of the substrate. When the mold manufactured using the master is used in the imprinting process to manufacture the display device, air bubbles are kept away from the side surface of a resin pattern. Accordingly, defects of the wire pattern of the display device may be prevented.

Abstract: An in-mold reprint manufacturing system for thin film texture includes a texture reprint device having a first mold and a second mold and an injection molding machine having a foil feeder, a foil feeder rewinder, a cavity moving plate, and a core fastening plate. The first mold and the second mold of the texture reprint device are pressed onto a thin film to generate a texture on the thin film. The foil feeder and the foil feeder rewinder continuously make the thin film with the texture pass through the core fastening plate. The cavity moving plate has a repeated movement to the core fastening plate to produce a product with the texture by the injection molding way. An in-mold reprint manufacturing method for thin film texture is also disclosed.

Abstract: A die for forming a lost wax ceramic core allows the formation of non-parallel separating spaces between adjacent portions of the core. The core will eventually form cooling channels in an airfoil. The die for forming the core includes a plurality of moving parts having rib extensions. At least some rib extensions are non-parallel to form the non-parallel spaces. The die includes two main die halves that come together to form several of the spaces. Inserts move with those die components and come together to form other spaces. At least one of the inserts contacts surfaces on one of the die halves, such that the non-parallel spaces are formed.

Abstract: The invention relates to an indentation apparatus (1) comprising a force frame (13) and a positioning frame (14). An indentation tool (5) is pressed into a work piece (7) in order to master a mould. The work piece (7) is supported by the base (6). An actuator (2) is mounted in the force frame (13). The actuator (2) and the indentation tool head (4) are connected with a rod (3). The rod (3) is fixed with flexible (swivel) joints (15) to said indentation tool (4) and said actuator (2) in order to physically decouple said force frame (13) and said positioning frame (14) from forces. Also a force sensor (9) is installed between the indentation tool (4) and the positioning frame (14). In order to keep the positioning frame unloaded, the balance force delivered by said force frame actuator (2) should be approximately equal to the indentation force. The signal of the force sensor (9) is interpreted by control electronics (10).

Abstract: Disclosed is a tool for turning a hex screw at the top of a denture compress containing denture flasks which comprises a hex key wrench having a shaft of finite length. Turning the hex screw in one direction causes pressure to be applied to a plate beneath it, and to the denture flasks within the compress. At one end of the shaft there is a handle perpendicular to the shaft, a T-handle. At the opposite end of the shaft a plurality of hex keys of different sizes are formed, in a contiguous relationship, the largest hex key being closest to the shaft and the smallest being furthest from the shaft. The T-handled hex key is supported by a frame which is attached to a flat base plate. The frame is perpendicular to the plane of the base plate, which has either within its surface or on its surface means for temporarily securing the dental compress thereto.

Abstract: A hydraulic power unit 15 of a match-plate molding machine comprises a hydraulic pump 20 for supplying oil, a piping system 21, 25, and 26 that fluidly communicates with first and second hydraulic cylinder systems 7 and 10 for supplying the oil from the hydraulic pump 20 to them to perform a squeeze step, an accumulator 22 that is provided within the piping system, first and second electromagnetic directional control valves 23 and 24 for controlling the flow of the oil from the hydraulic pump 20 to the first and second hydraulic cylinder systems 7 and 10, first and second pressure sensors 27 and 28 for measuring pressures of the oil of the first and second hydraulic cylinder systems 7 and 10, and for generating output signals that correspond to the measured value, and a controller 29 for receiving the output signals from the first and second pressure sensors 23 and 24, and for controlling the turns of the first and second electromagnetic directional control valves 23 and 24 based on the output signals and the

Abstract: For easy sanitary maintenance, stable topping of ingredients on rice, and formation of a roll in good appearance, a manufacturing apparatus of rolled sushi is provided with a roll forming sheet (S) fitted to a drive roller (12) and a back tension roller (13) rotating in forward and backward directions so as to be capable of transferring, conveying and winding the rice seasoned with vinegar (P) expanded on the roll forming sheet (S) by rotation of the rollers (12, 13), fitting grooves (20) provided at outer peripheries of the drive roller (12) and the back tension roller (13), fitting shafts (21) provided at end portions of the roll forming sheet (S) for detachably and slidingly inserting into the fitting grooves (20), and a pair of opening and closing rollers (14, 15) provided in an intermediate portion between the drive roller (12) and the back tension roller (13).

Abstract: A caplet having press-fit gelatin capsule shell halves includes one or more dimples formed in one or both ends of the caplet shells, which significantly reduces the thickness of the gelatin which thereby dissolves more quickly, allowing the medicament to be rapidly released into the body's digestive system. In one embodiment of the invention, the closing pins used to press the conventional capsule shell halves onto a core include a raised projection for debossing the dimples. As holding blocks of a press-fit machine move to encapsulate a caplet, closing pins form compressed dimples in at least one or preferably both ends of the gelatin capsule shell as the shells are applied to the core.

Abstract: A machine for the manufacture of flexible moulds is described, in particular for the obtainment of lipsticks or the like, which comprises a female mould including at least one moulding cavity fillable with a plastic fluid, a male mould including at least a male stem and means to insert said male stem into said cavity of the female mould after the same has been filled with said plastic fluid and to extract it from the same after a prefixed cooling period suitable to transform said fluid plastic into a flexible mould.

Abstract: The present invention includes a conforming template for patterning liquids disposed on substrates. The template includes a body having opposed first and second surfaces. The first surface includes a plurality of recessed regions with a patterning region being disposed between adjacent recessed regions. Specifically, the recessed regions define flexure regions about which each patterning region may move independent of the remaining patterning regions of the template. In one embodiment the template is mounted to a fluid chamber having an inlet and a throughway. The template is connected to the throughway and the inlet is connected to a fluid source to facilitate deformation of the template to conform to a profile of a surface adjacent thereto.

Abstract: A process is disclosed for hydrolyzing an oil or fat by mixing and feeding an oil-phase substrate and a water-phase substrate to a packed layer with an immobilized enzyme packed therein. The oil or fat is subjected to a hydrolytic reaction under feeding conditions such that a shear stress factor (?w), which is applied to a surface of said immobilized enzyme and is expressed by the following formula (1): ?w=(?P/L)×dp×?/(1??)??(1) wherein ?P represents a maximum pressure loss [MPa] through said packed layer during said hydrolytic reaction, L represents a thickness [m] of said packed layer, dp represents a weight-basis average particle size [m] of particles of said packed, immobilized enzyme, and ? represents a void volume [-] of said packed layer, remains within a range of from 1×10?4 to 1.4×10?3 MPa.

Abstract: Compositions and methods are provided for producing multilayered artificial organs comprising heterogenous polylayers. Polylayers comprising homogenous cell populations are created on one side of a biocompatible substrate such that a chimeric interface is produced between the heterogenous polylayers. Cellular interaction at the chimeric interface produce an interstitial biomaterial with morphological and functional characteristics that resemble the natural in vivo organ. An artificial organ is produced by creating a first cultured polylayer of cells derived from an isolated population of smooth muscle cells on a substrate in the shape of an organ, and creating a second cultured polylayer of cells derived from a cell population different from the smooth muscle cell population.

Abstract: A molding die has a shell having a penetration hole, a lower pattern installed in the lower opening of the shell, and an upper pattern slidably disposed from the upper opening of the shell. The shell includes an outer shell and an inner shell disposed inside of the outer shell. The inner shell is includes plural split shells. The inner shell can be separated from the outer shell. The inner shell, lower pattern, and upper pattern form a cavity. As a result, if the molded product sticks to the inner circumference of the shell, the molded product can be easily taken out of the molding die by disassembling the shell. Further, a molded product having an excellent dimensional precision can be manufactured.

Abstract: A molding press for simultaneously molding a product and laminating a pattern layer to the surface of the molded product comprising a bottom mold plate, a top mold plate, a mold ring element surrounding the mold plates and moveable independently of the top and bottom mold plates, an upper surface on said mold ring for engaging a peripheral edge of the top mold plate, and a flat groove in said mold ring upper surface which is slightly deeper than the thickness of a pattern layer to be laminated to the top surface of the final molded product.

Abstract: A method for manufacturing rubber molds using a mold making apparatus having first and second discs of rubber mold material with models of articles to be cast positioned therebetween includes a bottom plate having a centrally located portion which engages the first sheet of rubber mold material and an outer reduced thickness flange, and a top plate which overlies the bottom plate. The top plate has a centrally located portion which engages the second sheet of rubber mold material and an outer reduced thickness flange corresponding to the flange of the bottom plate when disposed over the bottom plate. A plurality of thumb turn members are provided for tightening the top plate towards the bottom plate by hand. The arrangement is such that the models disposed between the first and second discs of rubber mold material form mold cavities therein.

Abstract: The present invention relates to a master disk used as a matrix for manufacturing a stamper by transferring, which is used for reproducing an optical disk, the master disk according to the present invention is provided with an appointed number of calibration tracks formed at an appointed pitch symmetrically relative to the center of guide tracks in the area including a position corresponding to an edge portion of a center hole of the stamper, whereby the center hole of the stamper can be easily formed concentrically with the guide tracks of the master disk and the tolerance of diameter of the center hole or the eccentricity between the center of the center hole and the center of the guide track can be easily measured.

Abstract: A three station turret-type apparatus is provided with a first station including structure for receiving a quantity of soil to be compressed into a building block, a second station for compressing the soil into the desired building block and a third station for ejecting a formed building block from the apparatus. A rotary table is equipped with peripherally spaced sleeves for successive registry with the three station positions and each sleeve comprises a mold in which the desired block is to be formed. The sleeves are removable and replaceable and one form of sleeve is constructed to have an auxiliary smaller plan area sleeve removably mounted therein. Further in the second station position, a stationary bottom plate closes the lower end of the sleeve registered therewith and the bottom plate faced with a urethane elastomer material. A pressure head opposes and is movably toward and away from the stationary plate and is faced with a similar urethane elastomer material.

Abstract: In order to remove a thin-walled wax model adhering to the walls of a first core piece and a second core piece, after solidifying, from a multi-part device for making thin-walled wax models, without damaging the wax model, after the external pressure is released, a mold-opening moment is generated simultaneously and abruptly in axially opposite directions by spring-loaded push-off bolts or directly by leaf springs in the upper parting faces and lower parting faces of the device. As a result, both the lower closing plate and the upper closing plate are separated from the annular casing and the wax model is separated from the core pieces, by a maximum of 3 mm, axially in opposite directions because the adhesion of the wax model to the walls of the core arrangements is overcome simultaneously and abruptly. Subsequently the two core arrangements and the casing are transported away from one another in an axial direction relative to one another, so that the wax model is freed.

Abstract: A device for aiding in preparing a die member of a platen press to have recesses in registry with tools of a punch member characterized by a pressing station having an upper and lower bolster for receiving a pressure-forming device and a stack including at least one backup member, a die member and the punch member so that as the pressure device acts on the stack at least the outline of the tools of the punch member is transferred to a surface of the die member. The pressure device utilizes a hydraulic plate having a recess covered by a membrane which membrane is engaged by flexible support blades or members on its outer edge which are held there by an outer frame formed of blade guides. The device also includes a transport arrangement for moving the stack between the pressure station and an unloading station.

Abstract: A chocolate candy having its upper surface sculpted as the image of a person's face and a method for sculpting a person's face from a photograph onto a chocolate candy by adapting a photographic image of a person's face, converting the adapted image onto a transfer medium or die, and then embossing such adapted image onto chocolate candy.

Abstract: A dental press or jig for rigidly positioning during a short curing period, a matching pair of dentures held in occlusal alignment with one or both having a contacting layer of relining material pressed against a respective model of the patient's mouth, all clamped together by the press within a body of plaster of Paris. The laterally-open press is formed of a pair of annular plates or disks, vertically spaced apart a constant distance by three, upstanding, peripheral posts which are thus tensioned against opposite faces of the composite workpiece. Each plate is formed with plaster escape-channels leading to catch basins on the outer faces, the basins being defined by a reinforcing pattern of diametric ribs within a peripheral rim which render the plates unbendable under pressure. The assembly may be molded of glass-reinforced terephthalate resin for high tensile and flex resistant properties.

Abstract: A mold for use in making decorative marshmallows. A mold body forms a positive male punch mold having an exterior bottom surface of decorative shape. A handle is attached to the body and is upstanding therefrom. The mold is pressed into flour to form impressions in the flour. The impressions are then filled with a marshmallow mixture which sets up forming decorative marshmallows having the shape of the original positive mold.

Abstract: This provides a way of producing a sand mould which does not require heavy echanical presses or violent vibration to ensure sand properly fills tight patterns in a mould. Sand is put into a buffer zone 40 via a feed device 2,3. Below the buffer zone 40 is a flask 10 and pattern plate 14, and the space between the buffer zone 40, the flask 10 and the plate 14 defines a charging chamber through which the sand must fall to produce the mould. This space, and preferably the buffer zone as well, is evacuated. This eliminates air resistance to the falling sand and, as a result, the sand fills the mould properly. The sand is allowed to fall after the vacuum has been established. The reason for evacuating the buffer zone is to bleed the sand of air. It is preferred that the pressure in the charging chamber is reduced further than that in the buffer zone, since a difference in pressure will further accelerate the sand towards the pattern plate.

Abstract: A transparent, generally cylindrical, wide-mouth pressure retaining vessel or container cast of synthetic resin with a surrounding side wall formed by successively downwardly inset, annular wall segments, and externally reinforced by integral vertical ribs with successive annular edges of the inner stepped face providing support ledges adapted to hold removable shelves upon which freshly cast dentures, acrylic hobby items, pressure-curable art objects, etc. as well as fermentable foodstuff and gas-generating chemicals may be placed for exposure to externally applied and/or internally generated fluid pressure (gas or liquid). Necessity for retention clamps is eliminated by a threadedly mounted closure which carries a manually operable, threaded piston stem disposing a piston in an open-bottom chamber of the cover, which chamber projecting into a container full of liquid causes the latter to fill the piston chamber upon the cover being mounted on the container.