Abstract: A clamp assembly is provided for securing a panel or fairing to an I-beam, and comprises a pair of side blocks and a clamping block, together with a single bolt to secure them in place. Each of the side blocks as an inclined wedge surface, and the T-shaped clamping block has similarly sloped wedge surfaces along the sides of the leg of the T. When a bolt this passed through side legs of the side blocks, and through or under the clamping block, a sliding and wedging action between the inclined and sloped wedge surfaces occurs. Moreover, a clamping action between the top surface of the clamping block and the lower surface of the lower flanges of the I-beam is also induced.

Abstract: A drag reduction plate is provided for trailers that are towed by vehicles along a roadway or highway, where the trailer typically has a box-like construction having a bottom, top, front, back, and sides, and at least one wheel set near the back end and below the bottom thereof. The drag reduction plate is a rigid or semi-rigid plate secured to and depending vertically downwardly from the bottom of the trailer and being disposed along a portion of the length of the trailer forwardly of the at least one wheel set. A drag reduction structure comprises a drag reduction plate and a pair of deflector plates also depending vertically downwardly from the bottom of a trailer; and extending outwardly and rearwardly from the rear end of the rigid or semi-rigid plate in a region which is forward of the at least one wheel set. The outer edges of the deflector plates are located at positions which are wider than the outer width of the wheel set.

Abstract: A clamp assembly is provided for securing a panel or fairing to an I-beam, and comprises a pair of side blocks and a clamping block, together with a single bolt to secure them in place. Each of the side blocks as an inclined wedge surface, and the T-shaped clamping block has similarly sloped wedge surfaces along the sides of the leg of the T. When a bolt this passed through side legs of the side blocks, and through or under the clamping block, a sliding and wedging action between the inclined and sloped wedge surfaces occurs. Moreover, a clamping action between the top surface of the clamping block and the lower surface of the lower flanges of the I-beam is also induced.