Abstract: A steerable toy vehicle includes a first steering plate having a proximal end and a distal end, the first steering plate having a first steering plate pivot point at its distal end, and a second steering plate having a proximal end engaged with the proximal end of the first steering plate so that rotation of the second steering plate in a first rotational direction causes the first steering plate to rotate in a second rotational direction. The vehicle includes at least one tire rotatably coupled to the first steering plate, and at least one tire rotatably coupled to the second steering plate. Rotation of either one of the first or second steering plates in a first rotational direction causes the toy vehicle to steer left, and rotation of the same one of the first or second steering plates in a second rotational direction causes the toy vehicle to steer right.

Abstract: A system for monitoring the passage of people through a controlled location, the system comprising; a security access device for selectively allowing and preventing the passage of one or more people through the controlled location; a thermal imaging device for obtaining movement and temperature information relating to people passing through the controlled location; and processing means for analysing the detective movement and temperature information for use in controlling the operation of the security access device.

Abstract: A non-intrusive device for attachment to a pipe or vessel through which a fluid flows for monitoring the accumulation of deposits on the interior surface of the pipe or vessel. The device comprises a tubular member having an internal cross-sectional configuration substantially matching that of the pipe or vessel. Additionally, the tubular member is made of an electrically insulating material and having associated therewith three spaced electrodes for monitoring the change of dielectric constant within the pipe or vessel.