Methods and apparatus are provided for receiving, detecting and transmitting geophysical data from a plurality of electrodes placed in the soil utilizing a dynamically reconfigurable wireless control unit that is located on each electrode. Data from the control units is transmitted by a wireless signal to a centralized data processor for analysis. Control data is provided from a central control processor to the control unit by wireless transmission. The control unit, which is positioned, include...

The present invention provides a method of combining various types of data and software in order to arrive at a composite graphical representation of a construction site, including surface and subsurface features. A 2-D or 3-D graph of subsurface contoured surfaces is created. A 3-D wire-frame model of surface and subsurface features is created. Aerial photographs of the site can be incorporated and the aerial photographs contoured surfaces and wire-frame model are to produce a complete Visual R...

A method is provided for detecting and locating anomalies in soil subjacent to an existing structure. Electrodes are placed into the soil both outside the structure and through the structure's foundation. Electrical resistivity data is collected using these electrodes. This electrical resistivity data is analyzed to create an electrical resistivity map or model. Inspection of the map or model can allow the operator to detect and locate resistivity anomalies which may correspond to geological ano...

A method is provided for detecting and locating anomalies in soil subjacent to an existing structure. Electrodes are placed into the soil both outside the structure and through the structure's foundation. Electrical resistivity data is collected using these electrodes. This electrical resistivity data is analyzed to create an electrical resistivity map or model. Inspection of the map or model can allow the operator to detect and locate resistivity anomalies which may correspond to geological ano...

A conduit system comprising a conduit openable along its length, from either of its ends, or intermediate its ends. The conduit includes an outer body or shell fabricated of substantially inelastic metal, and an inner flexible liner. The conduit defines a seam along its length, and the seam sections are connectable together by means of spaced hook members integrally connected to the body portion of one seam section and each projecting into an opening defined adjacent the opposite seam section. T...

An electric motor comprising a shaft 300 on which is mounted n motor modules (where n is an integer). Each motor module consists of two generally disc-shaped rotors 302 having a coil 304 sandwiched between them. Each rotor/coil module is separated from the adjacent module by an insulative spacer element 306 and a PTFE disc 308 which is mounted on the shaft 300 concentrically with the rotors 302 and the coil 304. The axis about which each coil 304 is wound is substantially in line with the axis o...

The present invention may include a separation tank with an outer chamber and an inner chamber positioned within the outer chamber. An inlet and an outlet may be in communication with the outer chamber. A first opening may provide access between the inner chamber and the outer chamber. An inlet channel may extend between the inlet to a second opening in the inner chamber. A plurality of lower baffles positioned between the outer chamber and the inner chamber and adjacent to the first opening may...

An internal combustion engine includes one or more pistons (4), each of which is mounted to reciprocate in a respective cylinder (2) and is pivotably connected to a connecting rod (6) which is connected to a respective crank on a crankshaft (7). The connecting rod (6) is pivotably connected to one end of an elongate link (14), which is pivotably connected to the associated crank at a point intermediate its ends and whose other end constitutes a rod (18) which is restrained by a mounting (20, 24)...

Pad devices disposed between a lift sling and a load. The pad permitting relative sliding motion between the load and the sling without the sling and the load being in direct contact. This avoids damage to the sling and/or the load during the lift.

In order to improve the response of a signal transducer of the type which converts an electrical signal into a different form of energy, for example a loudspeaker, and in particular to cause the output produced by the transducer to constitute a more faithful reproduction of the original electrical signal, the input of the signal transducer is connected to a first signal path which provides a signal component proportional to the signal to be reproduced, and to at least one second signal path conn...