Abstract: An I-beam clamp comprises a body having a seat and defining a medial plane extending through and perpendicular to the seat and a normal plane aligned with the seat; a pair of pads mounted to the body for movement between respective closed positions beyond the seat, on opposite sides of and in spaced relation to the medial plane and in spaced relation to the normal plane, and open positions, whereat each pad is disposed, relative to its closed position, in a direction away from both the normal plane and the medial plane; and an actuator for effecting movement of the pads between their closed positions and their open positions. Clamp pairs can be secured to a disabled trailer undercarriage and a brace can be disposed between each pair. A saddle can be secured to each pair to urge the brace towards the undercarriage and support same for towing.

Abstract: A dolly is disclosed and includes a pair of wheels; a frame mounted to the wheels and movable to an engagement position beneath the forward end of a trailer; a fifth wheel assembly; a mounting assembly and a clamp system. The fifth wheel assembly includes a track and a fifth wheel mounted thereto for movement parallel to a translation axis defined by the track. The mounting assembly connects the fifth wheel assembly to the frame for movement between a raised position, whereat the fifth wheel is positioned to receive the trailer kingpin upon movement of the frame to the engagement position, and a lowered position, whereat the forward end of the trailer is supported on the frame. The clamp system is mounted to the frame and selectively locks same against rotation relative to the trailer, to permit the trailer to be towed from its rearward end.

Abstract: An I-beam clamp comprises a body having a seat and defining a medial plane extending through and perpendicular to the seat and a normal plane aligned with the seat; a pair of pads mounted to the body for movement between respective closed positions beyond the seat, on opposite sides of and in spaced relation to the medial plane and in spaced relation to the normal plane, and open positions, whereat each pad is disposed, relative to its closed position, in a direction away from both the normal plane and the medial plane; and an actuator for effecting movement of the pads between their closed positions and their open positions. Clamp pairs can be secured to a disabled trailer undercarriage and a brace can be disposed between each pair. A saddle can be secured to each pair to urge the brace towards the undercarriage and support same for towing.

Abstract: A dolly is disclosed and includes a pair of wheels; a frame mounted to the wheels and movable to an engagement position beneath the forward end of a trailer; a fifth wheel assembly; a mounting assembly and a clamp system. The fifth wheel assembly includes a track and a fifth wheel mounted thereto for movement parallel to a translation axis defined by the track. The mounting assembly connects the fifth wheel assembly to the frame for movement between a raised position, whereat the fifth wheel is positioned to receive the trailer kingpin upon movement of the frame to the engagement position, and a lowered position, whereat the forward end of the trailer is supported on the frame. The clamp system is mounted to the frame and selectively locks same against rotation relative to the trailer, to permit the trailer to be towed from its rearward end.