Abstract: A protective book cover includes a pair of pocket sections for removably receiving the front and back covers of a book with the open ends of the pocket sections disposed toward each other. The pocket sections fit snugly on the book cover juxtaposed the book binding. The flap on one section is inserted into the other section while the flap on the other section secures both sections together.

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: A protective book cover includes a pair of pocket sections for removably receiving the front and back covers of a book with the open ends of the pocket sections disposed toward but spaced from each other by a distance less than the width of each pocket and with the pocket sections connected together by a spline joined to the outer members of the pocket sections.