Dynasauer Corp.

Phillip E Burba

Richard L Palinkas

William R Beaman

A vibration isolating mount for use with a vibratory pile driver and extractor is comprised of a pair of identical plates that are spaced from each and are interconnected by a polyether-based urethane center member. Each of the plates are provided with pluralities of attachment holes for attaching the vibration isolating mount between an exciter and a suspension housing of a vibratory pile driver and extractor. Each of the plates is also provided with pluralities of lug holes that are filled with the polyether-based urethane of the center member and provide a mechanical connection between the plates and the center member in addition to a chemical bond adhering the plates to the center member. The structural characteristics of the vibration isolating mount and the polyether-based urethane employed in constructing the mounts provide a vibration isolating mount that is capable of sustaining larger shear stress forces than prior art mounts and is more capable of resisting deterioration by exposure to the environment than are prior art vibration isolating mounts.

Vibration isolating mount for vibratory pile driver and extractor

A replaceable pipe liner assembly for a pipe assembly used to dispense abrasive materials has a plurality of tubular liner sections positioned in end-to-end engagement along the length of straight pipe sections of the pipe assembly, and further includes T-shaped liner sections for lining T fittings of the pipe assembly. The tubular liner sections and T-shaped liner sections are easily replaceable, and each is of molded, one-piece, construction, and of resilient abrasive resistant material such as polyurethane. The tubular liner sections interfit in end-to-end engagement to axially align the sections and present a smooth inner liner wall.

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Kirkwood, MO, United States of America

Phillip E Burba