Abstract: A dock support having a piling composed of an upstanding rod the lower end of which is adapted to be embedded in the bottom of a body of water and an external telescoping sleeve having a cap at its upper end which normally confronts and seats on the upper end of the rod. A passage exists between the confronting surfaces of the inner and outer telescoping members and such passage is occupied by air, rather than water. The air prevents water in the passage rising to the level at which it may freeze, but should water in the passage rise to the freezing level compressed air may be admitted to the passage via a valve under sufficient pressure to purge such water.

Abstract: A drawbar trailer for transporting very long, very heavy, substantially rigid loads, the trailer having a load support platform carried by at least one front and at least one rear axle and separable wheel assembly, the trailer comprising: an adjustable suspension system having inflatable members disposed between the platform and the front and rear axles for selectively raising and lowering the front and rear of the platform and for selectively raising and lowering the sides of the platform; the drawbar being pivotably mounted to the platform about a substantially vertical axis; a mechanism, preferably hydraulic, for turning the wheels of at least one of the front and rear axle and wheel assemblies; an automatic control system for activating the turning mechanism in response to pivotal movements of the drawbar; and, members for securing the load to the platform, whereby the tilt axes of the load support platform can be adjusted with respect to the axle and wheel assemblies, and in turn, with respect to terrain

Abstract: This invention pertains to low-shrink polyester molding resin mixtures primarily based on a certain low-shrink thermoplastic additive produced by synthesizing the vinyl copolymer thermoplastic additive in a hydroxyl terminated polymeric diluent. The resulting vinyl copolymer is dispersed in the hydroxyl containing polymeric diluent which can be post reacted with isocyanate material to produce a polyurethane-vinyl copolymer thermoplastic additive. This thermoplastic additive can be added directly to the thermosetting polyester polymer and monomer mixture to provide a low-shrink molding resin system.