Abstract: A portable traffic control device having a housing, two generally parallel and independently rotatable shafts beyond extending the housing length, and a plurality of blades connected to each shaft. Each shaft rotates such that the blades on that shaft either protrude up through openings in the top of the housing or extend horizontally within the housing. When a shaft is rotated such that its blades protrude upward, the blades remain protruding and puncture the tires of vehicles driving over the housing in a first direction. The blades are pushed downward into the housing by contact with tires of vehicles driving over the housing in the opposite direction. Biasing means rotates that shaft pushing the blades up to their protruding position. The device is modular in that two or more devices may be detachably connected in series wherein all of the first shafts and all of the second shafts rotate in unison.

Abstract: A portable speed bump unit having a plurality of speed bump cells removably and pivotally connected together to form a single PSB unit of variable length. Each speed bump cell comprises a plastic base having a rectangular footprint, a raised top surface, and a cross-sectional profile that is generally trapezoidal or semi-circular in shape. The speed bump cells are interconnected via one or more hinge bars that are pivotally connected together, thereby allowing two adjacent speed bump cells to be folded together such that an entire PSB unit can be rolled up for easy retrieval, portability, and storage purposes and simply unrolled to an extended position for deployment and use. Alternative embodiments of a portable speed bump unit incorporate safety features, e.g.

Abstract: A portable tire deflation device designed for a law enforcement officer to deploy across a lane of traffic. The device is a band of spring steel being about 10-12 feet in length and about 5-8 inches in width, divided into multiple segments wherein each segment has a strip of hollow steel spikes that are removably secured in the strip. Furthermore, each strip of spikes is offset from the strips in the other segments of the band. At least one or more of the segments also has an elongated aperture that is aligned with a strip of spikes in an adjacent segment. To store the device, a user simply starts at one end and rolls up the band. A hook and loop fastener, e.g., VELCRO®, strip is used to secure the device in the rolled up position. Due to the fact that the strips of spikes in each segment of the band are offset, the spikes can be easily rolled up.

Abstract: A tire deflating blade system is disclosed having a plurality of tire deflating blade system modules that can be adjacently and pivotally connected together to form a tire deflating blade system of variable length. Each tire deflating blade system module comprises a base being generally rectangular in shape and having an end profile that is generally trapezoidal in shape. One or more blades are permanently disposed in the base and are rotatably connected to a shaft that runs longitudinally through the base, such that the blades can be moved between a retracted position for storage and an armed position for deflating tires upon the longitudinal movement of the shaft. The blades are very strong having a plurality of sharpened edges and at least two points. A cover plate is positioned over each blade to ensure safety while handling and storing the device while the blades are in the retracted position, thereby preventing anyone and any thing from being cut by the blades.