The main object here is the production of shapes, parts, and tolerances not obtainable m compression or transfer molding Pultrusion is a special, increasingly used technique for pulling resin soaked fibers through an onfice, as it offers significant strength improvements Any thermoset, granular molding compound can be
The pole can also be cast to provide for a press fit, slip joint at the butt of the pole which allows the pole to be interconnected with other similarly cast poles for extended There is no history of the use of ductile iron for utility pole purposes, however, such material, if centrifugally cast into a hollow, tapered geometric shape as
The present invention in an embodiment provides an improved utility vault cover or lid which is manufactured from a fiberglass reinforced polymer matrix material producing a reduced weight and increased strength cover which is lighter, stronger, has improved UV characteristics and slip resistance and is less expensive to
Panels formed by this method are limited to the width of the pultrusion machine (typically two feet, but a maximum of four feet) No ,, to Delorme The Delorme patent discloses forming a fiberglass sandwich roof panel on a continuous bed by sealing a foam layer to top and bottom face sheets made of glass cloth
This is an improvement over the idea of clamping a piece of wood in place because the flip stop can be flipped out of the way when not in use and replaced instantly However, the system components could also be made of other materials and by other processes, such as molded, extruded or pultruded plastic, by metal
Natural and wood fiber plastic composites are among the most rapidly growing markets within the plastics industry Applications for these The stress strain curve also becomes non linear near failure, as the fiber aspect ratio decreases, due to slip between the fibers and the matrix For a large fiber aspect ratio (l d )
Although the joints of the present invention will slip under extreme seismic loads to dissipate the energy, the joints will, however, remain elastic due to their construction Furthermore, no part of the joint becomes plastic or yields when subjected to the loading and the slip This allows a moment resisting frame utilizing the
, Continuous pipe making machines are used to make fiberglass reinforced plastic pipe for the transport of fluids A slip seal joint is less reliable If conventional continuous pipe or tube making equipment (such as but not limited to extrusion, pultrusion, filament winding, continuous braiding) is used,
The German specification describes a plastic step with grid configured profile rods on either side of the step which profile rods provide bearing locations for the step chain and trailing rollers The step includes a box profile which extends from one profile rod to the other beneath the non riser end of the step There are a
The hybrid diving board may include a primary diving board having a flat skid resistant top surface and a bottom surface extending between a first end and a second Non limiting and non exhaustive embodiments are described with reference to the following figures, which are not necessarily d n to scale, wherein like
All design and operating requirements under OH amp S and insurance guidelines including non skid, steps, rails, weight, safety bars and loading capacity were met Trust Ryman The recent fascination for plastic tanks based on low initial cost has had an unfortunate but we believe temporary effect on fibreglass tanks.
The strip , which is preferably continuously formed via pultrusion, includes a polymer matrix having embedded fibers of two types to concrete or steel, e.g when installing electrical conduit on concrete walls or attaching wooden furring strips to steel beams, but they are generally not used in structural applications.
The preferred embodiment will be discussed in the context of a pole which elevates a bank of pre aimed lighting fixtures such as disclosed in U.S Ser No ,, issued as U.S Pat No ,, on Mar , The pole is slightly tapered to slip fit over a slightly tapered upward end of a concrete base that is rigidly
Pultruded products have numerous advantages over conventional building materials Relative to structural steel and aluminum, and to conventional building lumber, pultruded fiber reinforced thermoplastics are stronger, lighter, more corrosion and rot resistant, are less electrically conductive, and have greater dimensional
No , filed on , , for a THERMALLY ISOLATED PERIMETER FOUNDATION, both to the selfsame inventor Michael G Butler who is the inventor of Integral connector is appropriately of high quality RPVC extrusion, or of construction structural quality glass fiber reinforced plastic pultrusion such as
The composite fiber and resin reinforcement is a fiber reinforced polymer (FRP) composite comprising a thermoset polyurethane resin matrix and a plurality of fibers Typical uses will be Existing patents and procedures for reinforcements bonded to wood do not include the use of thermoset polyurethane resin Thermoset