156 results about "Corrugated plastic" patented technology

A cooling assembly for a dual electronic image assembly having an open and closed gaseous loop. A closed gaseous loop allows circulating gas to travel across the front surface of a pair of electronic image assemblies and through a heat exchanger. An open loop allows ambient gas to pass through the heat exchanger and extract heat from the circulating gas. An optional additional open loop may be used to cool the back portion of the electronic image assembly (optionally a backlight). The cooling assembly can be used with any type of electronic assembly for producing an image. Some embodiments use cross-flow heat exchangers comprised of corrugated plastic.

Moisture resistant foundation footing form sections constructed from corrugated plastic are disclosed. Supports for holding sections of reinforcing bar, and connecting the side walls of the form sections are included. Also disclosed are tabs and notches in the side walls for use with stakes to connect adjacent form sections. Form sections are disclosed for constructing a corner in a foundation footing form. Step-down forms are disclosed for constructing a foundation footing form on a construction site having surfaces of different elevations. The form sections can be secured in position with stakes, and leveling devices for leveling the form once it is secured in position are disclosed. The form sections disclosed herein can be reused, but they do not attract insects and therefore they do not have to be removed from finished foundation footings.

The panel attachment system includes opposite upper and lower tracks attached to the edges of an opening in a building structure, and one or more panels that secure removably to the tracks to protect the opening from extreme weather, such as hurricane force winds. The upper track has a generally “h” shaped cross section and secures the upper edge of the panel therein. The lower track has a generally “F” shaped cross section, and holds the heads of a series of threaded fasteners in the channel of the track. The threaded shanks of the fasteners protrude outwardly normal to the building structure, pass through holes formed in the lower edge of the panel, and are secured by corresponding nuts. Two or more panels may be joined to cover a wider opening. The panels may be formed of corrugated plastic material.

A modular synthetic grass playing surface system formed from a plurality of modular units. Each modular unit has a synthetic grass layer placed upon predetermined sized pallets having a pre-installed elastomeric layer. A layer of resilient particle infill is optionally introduced to the top surface of the modular unit. A corrugated plastic sleeve is optionally installed around each formed modular unit while the modular unit is stored and moved. A plurality of modular units are then installed onto a relatively flat surface to form the playing surface in a desired shape and size.

The invention discloses an internal rib-reinforced outer corrugated plastic wound structural wall pipe and a manufacturing method thereof. The pipe comprises a pipe body formed by winding and welding special-shaped strips spirally, wherein the pipe body comprises a cylindrical pipe wall, a hollow reinforcing rib wound on the pipe wall spirally and a reinforced internal rib which is positioned in the hollow reinforcing rib and is perpendicular to the pipe wall; the reinforced internal rib divides the hollow reinforcing rib into two hollow cavities which are parallel; and the welded combinationsurface is positioned at the position of the reinforced internal rib. The pipe is formed by winding the plastic special-shaped strips of which two sides are provided with tubular bulges with the hollow cavities spirally and fusing by molten gel. In the manufacturing method, the pipe is formed by winding the plastic special-shaped strips of which the two sides are provided with the tubular bulges with the hollow cavities spirally and fusing by the molten gel, so an obtained plastic corrugated pipe is provided with the hollow reinforcing rib wound on the outer side of the pipe wall, and has high ring stiffness, the combined action of pipe clay and high strength. In addition, by a structure of the reinforced internal rib, the stability of the hollow reinforcing rib can be improved effectively, so that the stability of the wound corrugated pipe is superior to that of other wound corrugated pipes and dual-wall corrugated pipes.

A microphone mounting system for an acoustic, stringed instrument that places the microphone in sufficient proximity to the instrument sound hole to capture the warmth and tone of the instrument while assisting in feedback control, and without altering or damaging the finish or structure of the instrument. The system includes a grip, such as a corrugated plastic tube, attached to a microphone and wedged into the instrument sound bole to be held in place through frictional engagement. The microphone is connected to an instrument cable coupler, clamped to the side of the instrument, which is then connected to a sound amplification system.

A hollow conduit, being primarily round, or having n sides wherein n is greater than or equal to three, and process for making the conduit is described herein. The hollow conduit is comprised of a polymer inner conduit having a pair of opposed ends and an interior and exterior surface. An overmolded corrugated polymer is bonded between at least a portion of the ends and at least a portion of the exterior surface of the inner conduit. The overmolded polymer has at least one flexible position retaining means at least partially embedded within. The flexible position retaining means within the overmolded polymer may be a metallic wire. The inner conduit may be a thermoset, and the overmolded corrugated plastic may be a thermoplastic.