Abstract: A gear box 1 has an input shaft 2, an output shaft 4 and a counter-shaft 6. A headcut gear 8 mounted on the input shaft 2 intermeshes with a first counter-shaft 10 mounted on the counter-shaft 6. A second counter-shaft gear 12, intermeshes with a corresponding gear 16, mounted on the output shaft 4. The first two counter-shaft gears 10, 12 are interlocked by virtue of inter-engaging means comprising, for instance, a protrusion 24 from one of the two gears and a protrusion receiving recess 30 in the other of the two gears 10,12. Interlocking the two gears 10,12 prevents one rotating relative to the other in the event, say, of a torque spike.

Abstract: Floor or wall covering is provided and comprises a decorative opaque surface layer bonded to a sheet backing obtained by comminuting, softening and resheeting a sheet material comprising a fibrous reinforcement, a layer of foamed vinyl resin and pigmented decoration. The fibrous reinforcement is normally of glass fibres and particulate inorganic filler is incorporated into the mass that is resheeted.

Abstract: A floor or wall covering is disclosed which comprises a foamed polymeric layer including raised areas separated by recessed areas and a protective layer over the upper surface of the covering and comprising a first non-foamed layer and a second non-foamed layer and in which the second non-foamed layer is discontinuous and leaves part at least of the first non-foamed layer uncovered and has a gloss different from that of the first non-foamed layer or at least one of the first and second non-foamed layers is discontinuous and provides the protective layer with a difference in thickness that imparts a pattern in relief to the said covering.

Abstract: Floor or wall covering is provided and comprises a decorative opaque surface layer bonded to a sheet backing which is either rejected decorative cushioned vinyl wall or floor covering or is a sheet obtained by comminuting and softening such wall or floor covering and forming the resultant mass into a sheet.