34 results about "I-joist" patented technology

A system and method of manufacture providing reinforced structurally functional load-bearing members, including but not limited to using thermoplastic materials, such as High Density Polyethylene (HDPE), reinforced such as with an aluminum alloy or carbon fiber core element. Among its possible uses, the present invention has application for provision of structural support members, such as an illustrative I-joist product having a vertical center member preferably comprising HDPE, and top and bottom flanges having structurally meaningful reinforcement. The center member and flanges preferably comprising HDPE provides a relatively hard, durable, substantially weather-resistant structure.

A system and method used in residential and commercial construction of floors, ceilings and roofs, where a beam and hanger together support a joist/rafter to which sheathing is applied. Hanger design features include bendable stiffeners that provide pinching structural support for opposing sides of an engineered wood I-joist web after the joist/rafter is seated into the bridge of the hanger, providing a superior structural interface connection, less material cost, and no contact between the hanger and sheathing which reduces unwanted noise in finished construction. Additional strengthening of the structural/load-bearing interface between the joist/rafter and beam may include selected horizontally-extending dato, groove, cut, or other detail formed in the support beams during their manufacture/milling and rearwardly-extending protections on the hanger configured to engage the detail.

This application relates to I-joists which are configured to resist fire damage. Specifically, the present application relates to reinforcing I-joists with reinforcing members configured to provide structural support and/or to provide a physical barrier to fire. This may help the I-joists to maintain structural integrity during a fire and so help improve safety during evacuation of a building and during fire-fighting operations.

An off-highway truck body comprising a plurality of tube-style support members, wherein each tube-style support member comprises one or two pieces of square tubing, wherein the truck body comprises two sidewalls, a floor, a front wall and a canopy, and wherein one side of each tube-style support member is welded to the outside of the sidewall, floor, front wall or canopy. The pieces of square tubing are preferably comprised of steel. The present invention optionally comprises a forward wedged front wall and a side-sloped canopy. The present invention also encompasses a tube-style tailgate and an alternate embodiment in which I-beams are used in lieu of square tubing.

The first product is Composite Guardrail Post (CGP). CGP is designed overcome all these drawbacks by substituting standard timber posts with metal jacket composite posts. The second product is Composite Floor Joist (CFI). The current invention (CFI) is similar to TJI in concept, but uses all composite material for both flanges and webs. Also, the connections between flange and web are much stronger, enabling the development of composite actions to the fullest extent.

A hole saw for cutting standardized holes in the web portion of an I-joist features a light weight saw body having a flywheel configuration and preferably three inserted cutting blades fixed within clamp cavities in an offset to the circumference, which is dimensioned in accordance to standard web heights. The flywheel configuration provides for smooth operation at high rotational speeds in combination with intermittent actuation of the circumferentially arrayed cutting blades.

A system and method of manufacture providing reinforced structurally functional load-bearing members, including but not limited to using thermoplastic materials, such as High Density Polyethylene (HDPE) or polypropylene (PP), reinforced such as with an aluminum alloy, glass-reinforced polyurethane (foamed or unfoamed), or carbon fiber core element. Among its possible uses, the present invention has application for provision of structural support members, such as an illustrative I-joist product having a vertical center member preferably comprising a thermoplastic material, and top and bottom flanges having structurally meaningful reinforcement. The center member and flanges preferably comprising a thermoplastic material provides a relatively hard, durable, substantially weather-resistant structure. Certain embodiments of the present invention include reinforcing members having a plurality of lobes or arms. Additional embodiments include indentations along the reinforcing members, such as the arms, to aid in bonding between the thermoplastic outer material and reinforcing member within the thermoplastic material.

Adhesive composition derived from tannin-furfuryl alcohol catalyzed by acid in a two-part aqueous system is used to bond a variety of wood substrates to give good bond strength and high percentage of wood failure. The reactivity of the mixed adhesive can be controlled by the proper selection of acid catalyst, catalyst concentration, and adhesive composition. This gives adhesive with a wide range of open time during processing. This adhesive system can be either cold set or heat activated. It can also be cured by radio frequency similar to typical industrial settings. These characteristics make this adhesive system suitable for a number of engineered wood applications such as finger joint, Glulam, I-joist, and LVL.

An insert for I-joist web holes provides support and separation for piping, tubing and/or cabling guided through the installed I-joist's web. At the same time, the insert protects the web hole against destructive forces commonly related to the installation process and/or gravitational loads of piping, tubing and/or cabling.

A system and method for automated application of adhesive, buffer, and/or liner to I-joists, whereby a controlled amount of adhesive, glue, buffer material, and/or a protective liner, are successively applied to the exposed flange of an I-joist. An air-activated side pressure wheel first pushes one flange of an I-joist against an opposing friction-reduced straight edge, then at least one adhesive/glue head extrudes adhesive and/or buffer material onto the opposing exposed flange of the I-joist. An overhead liner applicator may then place a protective liner upon the applied adhesive and/or buffer material. An applicator roller bearing and a pressure roller bearing press the adhesive/buffer/liner to the desired mil thickness, after which the liner applicator cuts the protective liner according to the cut pattern instructions received from a controller. A cooler can be used to cool the adhesive/buffer before release liner application. The system may comprise coordinated mechanical, electrical, and pneumatic components.

A wooden joist comprises wooden top chord and bottom chords. Wooden boards are adhesively connected to the chords to form an I-joist section along a portion of the wooden joist. Wooden webs may be adhesively connected to the chords to form an open-joist section along another portion of the wooden joist. A bearing extension is defined by the wooden top chord extending beyond an end of the wooden joist Metal webs are in alignment on opposed sides of the wooden joist. Each metal web comprises a top connector end fixed to the bearing extension, a bottom connector end fixed to the bottom chord, and a structural arm between the connector ends. The metal webs are solely provided in an end region along the wooden joist, whereby the wooden joist is adapted to be in a top-chord bearing relation with a beam.

A system and method of manufacture providing reinforced structurally functional load-bearing members, including but not limited to using thermoplastic materials, such as High Density Polyethylene (HDPE) or polypropylene (PP), reinforced such as with an aluminum alloy, glass-reinforced polyurethane (foamed or unfoamed), or carbon fiber core element. Among its possible uses, the present invention has application for provision of structural support members, such as an illustrative I-joist product having a vertical center member preferably comprising a thermoplastic material, and top and bottom flanges having structurally meaningful reinforcement. The center member and flanges preferably comprising a thermoplastic material provides a relatively hard, durable, substantially weather-resistant structure. Certain embodiments of the present invention include reinforcing members having a plurality of lobes or arms. Additional embodiments include indentations along the reinforcing members, such as the arms, to aid in bonding between the thermoplastic outer material and reinforcing member within the thermoplastic material. Certain embodiments of the present invention include reinforcing members used in combination with a foamed area and a thermoplastic material.

A method and an improvement to saw systems configured to convert raw I-joists from inventory to pre-cut sizes and/or cut routed patterns in I-joists for utility pass-through applications prior to their shipment to a construction site or return to inventory, whereby a controlled amount of adhesive and a protective liner are automatically and successively applied to the top flange of each I-joist. The saw system improvement comprises coordinated mechanical, electrical, and pneumatic components.

A reinforcement bracket is provided for buckling and shearing opposing support of a wooden I-joist. The reinforcement bracket may have two substantially parallel bridging structures combined by a spacing structure while providing a central contour recess. In the case where a hole is cut into a wooden I-joist in size and/or at a location exceeding the I-joist's safety standards, the reinforcement bracket may be laterally attached to the I-joist such that both bridging structures flank the cut hole while the cut hole remains accessible due to the central contour recess. The central recess contour provides thereby for a simple attachment at a construction site irrespective an eventual pipe or the like protruding through the cut hole. The reinforcement bracket is preferably monolithically fabricated from sheet metal and scaled in conjunction with dimensional standards of commercially available wooden I-joists.