Abstract: A mobile controller unit has a radio positioning system and a two-way communication system and a rover unit also has a radio positioning system and a two-way radio communication system. The controller unit can query the rover unit to send its location data so that the rover unit can be located and if desired, found, such as in the case of a lost child or items. Relative spatial position can be displayed along with an arrow showing where the rover is, also how fast it is moving and other data.

Abstract: A mobile controller unit has a radio positioning system and a two-way communication system and a rover unit also has a radio positioning system and a two-way radio communication system. The controller unit can query the rover unit to send its location data so that the rover unit can be located and if desired, found, such as in the case of a lost child or items. Relative spatial position can be displayed along with an arrow showing where the rover is, also how fast it is moving and other data.

Abstract: A technique and device for rehabilitating or repairing waste water system components or the like, comprising a spray-applied, multi-layer liner which seals the components and imparts structural integrity. The liner comprises a primer layer, a first moisture barrier layer, a foam layer and a second moisture barrier layer. The first and second moisture barrier layers are preferably made of the same material and form a skin on both sides of the internal foam layer. The combination of the foam layer and the two moisture barrier layers imparts structural strength and rigidity to the cured liner.

Abstract: A rotary motion transmitting device having oppositely disposed toric discs mounted on its input and output shafts. Motion transmitting rollers are frictionally engaged between the toric discs for transmitting motion from one toric element to the other and tension sheets extend between opposite rollers to balance forces exerted on the rollers. Pivotal roller supports are interconnected by correlating means which point limited independent pivotal movement of the roller supports while resiliently forcing the supports into the same angular positions. Also means are provided for controlling the transmission ratio such that the output torque assumes a desired value.