Hydraulic solid rod for use in, for example, trench shields

Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing

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138140, 156166, 156180, 156433, 156441, 264129, 428 357, 428 361, B32B 100

Patent

active

057099170

ABSTRACT:
A hollow composite rod manufactured in a pultrusion manufacturing process includes a hollow interior space that may be filled with a liquid, such as water or oil, and subsequently sealed to greatly increase the strength of a resultant rod assembly. The composite rod includes a high strength, pultruded fiber-resin jacket that, at each end, is molded about a reinforced insert to create a fluid-tight seal therebetween. Threaded access apertures are provided through either the reinforced inserts or the jacket itself, to permit the filling or draining of fluid relative to the hollow interior space. Reinforcing sleeves or caps may be molded over a portion of the jacket's exterior to improve the composite rod's resistance to cutting and chipping-type damage.

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