Abstract: A tomographic flow imaging system comprising three or more capacitance electrodes positioned around a pipe through which a flow to be monitored passes. The capacitance between each pair of the electrodes is measured, and an output is derived from the measured capacitances which is representative of the distribution of material within the pipe. A predetermined voltage signal is applied to one electrode at a time, and the electrodes other than said one electrode are connected to sources of equal fixed potential. The capacitance of each pair of electrodes is measured by measuring charge flowing between the said other electrode of the pair and the source of potential to which it is connected.

Abstract: A power transmission mechanism for a motorized hand tool, comprising a socket, a first spring set in said socket, a first rotary member inserted in said socket and stopped against said first spring, a revolving shaft inserted through said first rotary member, said first spring and said socket and connected to a power unit, a second rotary member inserted in said first rotary member, a cap attached to said first rotary member at an opposite end, and a second spring retained between said second rotary member and said cap, wherein said gap and said first rotary member are forced to move backwards toward said socket, when the resisting force which acts onto said tool surpasses the driving force from said revolving shaft, causing said second rotary member to disconnect from said first rotary member and said revolving shaft.

Abstract: An antitheft device for attachment to a steering wheel of an automobile comprising an elongated body member having two parallel passageways extending along an axis therein, first hook means secured to the body member for engagement with a portion of the steering wheel wherein the first hook means engage the wheel from the inside thereof with the body member extending outward beyond the periphery of the steering wheel, a first elongated rod member adapted to move in telescopic fashion in one of the passageways of the body member along the axis, second hook means secured to the first rod member for engaging the inside portion of the steering wheel diametrically opposed to the first hook means, a second elongated rod member adapted to move in telescopic fashion in a direction reverse to the first rod member, and means associated with the body member engaging the rods within the passageways that allows the rod members to extend with respect to the body member to be locked at any of a plurality of positions and ha