1662 results about "Closed cell" patented technology

Disclosed are aromatic polyester polyols, polyol based resin blends, and rigid closed-cell polyisocyanate-based foams made using the polyol based resin blends. The resin blends generally comprise:(a) an aromatic polyester polyol reaction product formed by inter-esterification of a phthalic acid based material; a hydroxylated material having a functionality of at least 2; and a hydrophobic material; and(b) a C4-C7 hydrocarbon blowing agent. Also disclosed is a method for preparing rigid closed-cell polyisocyanate-based foams comprising reacting a polyisocyanate and a polyol based resin blend.

A modular stent comprises at least one stent module including an intermediate segment consisting of one of either a closed-cell segment or a Z-segment and a pair of end segments connected to respective longitudinal ends of said intermediate segment, each end segment consisting of the other of said closed-cell segment or Z-segment, each closed-cell segment consisting solely of at least one annular closed-cell ring and each Z-segment consisting solely of at least one annular Z-ring. A method of manufacturing a stent form a small diameter tube includes laser-cutting the small diameter tube to define a plurality of longitudinally adjacent Z-rings, providing interconnector portions of said tube integrally joining facing aligned or offset Z-rings, expanding the small diameter tube, and removing predetermined interconnector portions from the expanded tube to provide the predetermined desired arrangement of interconnected closed-cell rings and Z-rings.

The invention consists of a hands-on, physically simulated human or animal body interior, containing physically simulated representations of all of the solid organs, hollow viscera, bladders, glands, major ducts, large and medium-sized blood vessels, muscle groups and interstitial tissues. The organs and vessels are life-sized and are composed of molded or sculpted open cell or closed cell foam rubber of varying density and load deformation, matching the physical properties of the specific biologic organs or tissues simulated. The organs, tissues and vessels may be treated with pigments, sealants and / or hardening agents to reflect the contours, appearances, densities, textures, elasticity, and deformability of normal or pathologically-altered internal organs and tissues. Organs contain molded vascular channels, reversibly attached to the larger blood vessels of the simulator. The model has a pressurized, watertight, simulated vascular system, monitored by electronic sensors.

A medical device includes a polymer scaffold crimped to a catheter having an expansion balloon. The scaffold, after being deployed by the balloon, provides a crush recovery of about 90% after the diameter of the scaffold has been pinched or crushed by 50%. The scaffold has a pattern including an asymmetric closed cell connecting links connecting the closed cells.

Continuous polymeric extrusion nucleation systems and methods useful for making polymeric microcellular foamed materials, including crystalline and semi-crystalline polymeric microcellular materials, are provided. Pressure drop rate is an important feature in some embodiments, and the invention provides systems for controlling these and other parameters. One aspect involves a multiple-pathway nucleator that is separated from a shaping die by a residence chamber. Another aspect involves a die for making advantageously thick articles, including a multiple-pathway nucleation section. Microcellular material can be continuously extruded onto wire, resulting in a very thin, essentially closed-cell microcellular insulating coating secured to a wire. Other very thin microcellular products can be fabricated as well.

A protective helmet is described comprising: an outer layer (1); an inner layer (5) for contact with a head of a wearer; and an intermediate layer (3, 4) comprising an anisotropic cellular material comprising cells having cell walls, the anisotropic cellular material having a relatively low resistance against deformation resulting from tangential forces on the helmet. The anisotropic material can be a foam or honeycomb material. The foam is preferably a closed cell foam. The helmet allows tangential impacts to the helmet which cause less rotational acceleration or deceleration of the head of the wearer compared to helmets using isotropic foams while still absorbing a significant amount of rotational energy.

A wall plate for a wall thermostat blocks intrusion air from the thermostat. The wall plate has a wire passage aligned with the wall penetration through which the thermostat wires emerge. The wall plate member directs any intrusion air that flows out the penetration away from the cavity of said thermostat. An insulating layer, e.g., a closed-cell foam sheet, in the wall plate insulates the thermostat from direct thermal contact with the wall. The closed-cell material closes around the thermostat wires. Bosses or feet on the thermostat back plate create a standoff between the wall plate and the thermostat.

A new concept wall system is provided, wherein the Exterior Insulation and Finish System cladding is created using components with no water absorption, a very low vapor permeability and sealing properties, accommodated with an installation technology which extend the materials properties to the assembly, together with bonding and sealing the intersections and terminations, creating a Non-Permissive to water and vapor diffusion, Exterior Insulation and Finish System (NP-EIFS). The present invention relates to an EIFS cladding having two air and vapor barriers, one applied to the substrate, a continuous liquid membrane with sheathing joints sealed to be moisture barrier for inside vapors, and an exterior weather and vapor barrier which is created using closed cell extruded polystyrene insulation boards, special assembled with joints sealed, to create a non-permissive insulation envelope of the enclosure. Another object of the invention is to provide waterproof and air / vapor-proof details, a new concept of flashing and sealant application around windows / doors and other constructive elements to avoid thermal bridges and air leakage inside thermal envelope and wall assembly. Methods of installation are included.

A fire suppression system for a container including a first tank containing a first liquid component of a two-part foam and a second tank containing a second liquid component of the foam. The system also includes at least one liquid component release device configured to be selectively capable of releasing the first and second components from their respective containers upon receipt of a signal from a fire detector upon detection of a fire. The two-part foam components are propelled through the system by a pressurized propellant that, upon release of the release device, causes the exit of the foam components from their respective tanks, through a mixing conduit to at least one nozzle. The nozzle is configured to spray the liquid component foam mixture into the container wherein the foam cures into a substantially semi-rigid, closed cell foam that is substantially impermeable and may have charring and / or intumescence properties.

The invention relates to the field of shoes in general, and more specifically to the application of microspheres in shoe material formulations to yield desired shoe properties. Even more specifically, the invention relates to a shoe component prepared from a closed cell foam incorporating microspheres to yield controlled cell size, cell size distribution and expansion characteristics. In another embodiment, the invention also relates to an inner sole for a shoe prepared from the reaction product of a polymer matrix component and a curing agent where the curing agent is incorporated in microspheres to yield a material conformable to the user's foot shape.

An improved closed-cell foam sheet stock and method for producing constant force characteristics in elastomer cushions. A closed cell foam is formed as a corrugated cardboard with regular cavities and support elements between two surface sheets. The resulting stock material possesses similar flexibility to foam stock but with an elongated force curve. A method for modifying this or other corrugated elastomers for efficient constant force curves is further provided where alternating support members are conjoined or buttressed to fold in controlled sigmoid shape under load. The resulting collapsible truss or space frame structure produces a cushion with improved cushioning, load distribution, shock absorption and resistance from lateral collapse while folding uniformly and efficiently to a smooth, compact and comfortable support under full compression. The orthopedic constant force profile allows uses in shoes, furniture, mattresses, sports padding, aircraft seats or packaging applications and extends the dynamic range of more resilient elastic, plastic or foam materials including very lightweight closed cell foam. For packaging applications both the collapsing truss or the less sophisticated corrugated profiles provide lighter weight and improved impact absorption over solid closed-cell foams.

A modular stent comprises at least one stent module including an intermediate segment consisting of one of either a closed-cell segment or a Z-segment and a pair of end segments connected to respective longitudinal ends of said intermediate segment, each end segment consisting of the other of said closed-cell segment or Z-segment, each closed-cell segment consisting solely of at least one annular closed-cell ring and each Z-segment consisting solely of at least one annular Z-ring. A method of manufacturing a stent form a small diameter tube includes laser-cutting the small diameter tube to define a plurality of longitudinally adjacent Z-rings, providing interconnector portions of said tube integrally joining facing aligned or offset Z-rings, expanding the small diameter tube, and removing predetermined interconnector portions from the expanded tube to provide the predetermined desired arrangement of interconnected closed-cell rings and Z-rings.

A double-sided self-adhesive reinforced foam tape comprising a release liner having upper and lower surfaces which are release surfaces, a first layer of pressure sensitive adhesive applied to the upper release surface, a layer of flexible polymeric film, preferably polyester film, applied to the first pressure sensitive adhesive layer, a layer of flexible foam, preferably closed cell PVC flexible foam, thermally bonded to the flexible polymeric film layer, and a second layer of pressure sensitive adhesive applied to the flexible foam layer. A length of material for use as a double-sided tape is provided, along with a method of making the length of material. An alternative embodiment, suitable for die-cutting, including a second release liner applied to the second pressure sensitive adhesive layer is provided. The tape may be used in automobiles and other applications.

An in-line skate wheel includes an polyethylene closed cell foam ring surrounding the outer cylindrical surface of a hard plastic hub. Polyurethane is molded onto the outer cylindrical surface of the hub and surrounding the polyethylene ring. The polyethylene ring is provided with a substantially lower density than the density of the polyurethane.

Methods for making scaffolds for delivery via a balloon catheter are described. The scaffold, after being deployed by the balloon, provides a crush recovery of about 90% after the diameter of the scaffold has been pinched or crushed by 50%. The scaffold structure has patterns that include an asymmetric or symmetric closed cell, and links connecting such closed cells.

The present invention relates to a delivery apparatus for delivering a self-expanding neurovascular stent that allows for smooth movement of the apparatus along a typically tortuous vascular path, ease of stent deployment, and ease of stent retractability being pushed and pulled through the delivery apparatus. The apparatus includes an outer catheter, and an inner shaft located coaxially within the outer catheter. The stent is mounted on the distal section of the inner shaft and preloaded within the outer catheter distal region. The inner shaft includes at least one stent blocking member disposed in the distal section. The self-expanding stent has proximal, middle and distal ends and is comprised of a plurality of closed cells. The self-expanding stent includes locking members which interlock with the blocking member(s) disposed on the inner shaft so as to lock the stent onto the inner shaft within the outer catheter, and to enable the stent retractable together with the inner shaft being out of and retrieved back to the outer catheter. More specially, the invention may be used in the treatment of blood vessel blockage and aneurysms which occur in the brain.

A wall fabrication system and method is provided. In an embodiment, an assembly line comprises one or framing stations and one or more insulation stations. The frame stations are configured to build a wall frame consisting of wall studs and a covering such as drywall. The wall studs and drywall define cavities in the frame which are to be insulated. Optionally, mechanical components such as electrical and plumbing can be installed. The wall section is then transferred to the insulation station. The insulation station is configured to fill the cavities in the wall frame with closed cell foam which is injected in flowable form into each cavity.

The invention relates to a base comprising a closed cell foam core sheet having a closed cell foam layer with a density gradient between the center of the core and the surfaces of the core. The invention also relates to a method of making such a base by adding a first concentration of a first blowing agent to a first polymer to form a first mixture, adding a second concentration of a second blowing agent to a second polymer to form a second mixture, and extruding the mixtures to form the closed cell foam core sheet. The invention also relates to a method of making such a closed cell foam core sheet base comprising the steps of adding a blowing agent to a polymer to form a mixture, melting the mixture, extruding the mixture from a die, and rapidly quenching the mixture against a high heat transfer surface.

A product comprises a fiber cement substrate, and a porous, closed cell foam joined to a substantial portion of a major surface of the fiber cement substrate.

The combination of insulating material with microwave interactive food packaging for enhanced cooking properties is disclosed. An insulating microwave packaging material (200) and a method of making the same are also disclosed. In one embodiment, the insulating microwave packaging material (200) is formed by bonding a microwave interactive material substrate (205) that creates sensible heat upon exposure to microwave energy to a second substrate (210) along bond lines (212) arranged in a pattern to form closed cells (214). Upon impingement of the insulating microwave packaging material (200) by microwave energy in a microwave oven, the closed cells (214) expand to form insulating pockets (216). One side of the insulating pocket (216) bulges and lofts above the opposite side. When a food product is situated on the insulating microwave packaging material (200), the insulating pockets (216) insulate the food product from the microwave oven environment.

The invention provides a method and structural member for securing a roof or an outer wall of a building against wind forces tending to lift the roof or outer wall off the building. A structural member has a panel, said panel comprising a plurality of spaced apart beam members, and a sheathing having an inner side and an outer side, the sheathing spanning a space between adjacent beam members and being attached to the beam members such that the inner side of the sheathing is in juxtaposition with the beam members. A layer of a rigid, closed cell foam comprising a polymer adhesive composition is on substantially the entirety of said beam members and substantially the entirety of the inner side of the sheathing such that the layer on the sheathing and the beam members is substantially continuous, and adheres the sheathing to the beam members.

A three dimensional composite panel structure is provided having a thickness less than about 22.5 cm, overall density less than 0.2 g / cm, and exhibiting a global modulus greater than 1.2 GPa and stiffness greater than 15 kN-m2. The composite panel structure includes at least two fiber-reinforced mats interconnected in a spaced substantially parallel configuration by a skeletal web and a closed cell foam filling the spaces between the panels. The fiber-reinforced mats include a plurality of fibers in a low viscosity cured thermosetting resin matrix.

A display apparatus includes a display panel and a heat transfer sheet mounted adjacent to one surface of the display panel. A plurality of pores are formed in the heat transfer sheet. The heat transfer sheet may have an open cell-type structure and / or a closed cell-type structure. The open cell-type structure includes pores that are interconnected. The closed cell-type structure includes pores formed that are not in communication with each other, rather these pores may be independently formed.

The automated cell culture arrangement according to the invention comprises at least one closed cell culture module with at least one bioreactor. The closed cell culture module is a closed system, which means that within the closed cell culture module a closed sterile environment can be maintained. The automated cell culture arrangement according to the invention, further comprises at least one pump for pumping liquids within the closed cell culture module and at least one additional tool module, which is configured or configurable to act upon or to monitor the contents of a bioreactor and is movable relative to the at least one closed cell culture module or it is movable relative to one or several components of the at least one closed cell culture module.

The present invention provides a flexible finger tip stylus in a variety of configurations which can be worn on one or more fingers of a user to facilitate touching keys on a keypad, keyboard, or to close, expand or minimize a window or enter other data where needed or activate portions of a screen on a touch screen device without the need to use the entire hand to hold a pen-like stylus. The device can be made of any a variety of materials including, but not limited to: closed cell resin, flexible nylon, any flexible thermoplastic material, latex, plastic composites including latex, elastic, rubber, fabrics including elastic or lycra, and spandex, for example.

A multiple chamber self-inflating pad having a fluid impervious first chamber defined by a first flexible panel and an intermediate panel in which a first resilient member is disposed and to which the resilient member is bonded. An orifice is provided to control inflation or deflation of the first chamber. A second flexible panel is selectively bonded to the intermediate flexible panel preferably to form a gap or pocket into which a second resilient member may be removably disposed. Preferably, the first resilient member is an open cell foam while the second is constructed from closed cell foam. Alternative embodiments include the creation of a fluid impervious second chamber either fluidly linked to the first chamber or to the environment, alternative resilient materials, inclusion of radiant barriers, and the like.

The invention discloses a preparation method for an inorganic foaming fireproof insulation plate. The preparation method comprises the steps of selecting materials, preparing a superfine cement slurry, preparing a foaming liquid material and forming. As the above technical scheme is adopted, the preparation method disclosed by the invention has the characteristics of simple construction and easy industrial production; and the inorganic foaming fireproof insulation plate prepared by the method has the characteristics of lightness, good strength, high closed cell rate, low water absorptivity, small dry shrinkage value, good freezing resistance, excellent insulation performance and simple and convenient construction.

An athletic protective pad having first and second layers of breathable fabric and a foam body having a layer of perforated foam. The layer of foam is preferably closed cell foam with spaced apart perforations therethrough. The foam body is sandwiched between the first and second layers of fabric, thereby wicking moisture away from a wearer.