Abstract:
A grouting material which is self-dispersing when brought into contact with a volume of water containing liquor or slurry and is settable to a solid mass after such dispersion, the material comprising a composition, composition X, which comprises a blend of: Component (A): a cementive constituent forming from 10 per cent to 95 per cent by weight of the composition; component (B): a disintegrating mechanism promoting constituent forming from 2 per cent to 75 per cent by weight of the composition; component (C): an optimal swelling constituent which forms from 0 per cent to 50 per cent by weight of the composition; component (D): a binder constituent which forms from 0.1 per cent to 10 per cent by weight of the composition; the percentages of components A, B, C and D adding to 100 per cent.
Abstract:
An extensible and retractable linear drive (5) connects a tractor unit (1) and a trailer unit (2) and is controlled by a control unit (11). The progress of the tractor/trailer combination is assisted by alternately forcibly increasing and forcibly decreasing the distance between the tractor and trailer units (1, 2).
Abstract:
An automatically-regulated, self-flushing method of filtering a liquid suspension includes passing the suspension through a granular filter material. The flow of suspension is halted to relieve the pressure in the system, so facilitating the settling of the removed particles down the filter. Further settling of the particles may be achieved by passing an airstream through the filter material. A reverse flow of the filtrate then effects a backwashing action on the filter material so that further settling of the particles is encouraged. The filter material may be contained in a drain passage which follows a generally sinuous path. The drain passage may serve a waste landfill site in which toxic, hazardous or domestic waste is disposed.
Abstract:
A method, apparatus and computer program for diagnosing a mode of operation of a machine by collecting operating measurements (50) and extracting features (52) from those measurements to characterise operation of the machine in each of a number of known operating modes (54). Collecting further measurements and extracting further features and then comparing those features with the previously extracted features to identify a confidence level for each known operating mode (58). By using the confidence levels it possible to identify the operating mode of the machine.
Abstract:
A vehicle (10) such as a vehicle for agricultural use of the type commonly known as a tractor, comprises a chassis (11), a front axle means (18) and a rear axle means (40) suspended from the chassis (11) by rear axle suspension means (42-45), the rear axle suspension means being non-reactive and preferably self levelling, and there being a towing means (60) secured to the rear axle (40) by which an implement may be towed.