Abstract: A pin box for connecting a trailer to a tow vehicle includes a hollow receiver tube attached to a pair of support beams positioned on opposite sides of the receiver tube. A forward mounting bracket for attaching the pin box to a frame of the trailer is disposed between the two support beams. The mounting bracket is fixedly attached to both support beams. A second mounting bracket is attached to the ends of the support beams opposite the receiver tube. The pin box also includes a hitch connector that is slideably engageable with the receiver tube. The hitch connector may be positioned within the receiver tube at a plurality of discrete predetermined locations. An attaching means is provided for securing the hitch connector to the receiver tube at each of the predetermined locations. The hitch connector may be configured to include a king pin connector or a gooseneck connector. Differently configured hitch connectors may be interchangeably connected to the receiver tube.

Abstract: A wheel spring support frame for attaching a leaf spring to the underside of the frame of a vehicle. The support frame has a substantially U-shaped cross-section with parallel sidewalls connected by an upper member attached to the vehicle's frame. The sidewalls have spaced, downwardly projecting flanges which oppose the flanges of the other sidewall. Reinforcing spacers extend between the sidewalls, adjacent to the flanges. Each flange has an aperture aligned with the aperture of the opposing flange for accepting a fastener. The ends of the leaf spring are supported by the fasteners.

Abstract: A locking mechanism having a latch and linkage system that automatically unlocks the lid on trash bins when the trash bin is lifted into the air and then automatically re-locks the lid when the trash bin is placed back on the ground. A leg and pod assembly is attached to the linkage system and pulls the linkage system pivotably downward to move the latch away from the lid when the bin is lifted and thereafter pushes the linkage system upward to pivotably move the latch to secure the lid when the bin is repositioned.