Disclosed is an expansion joint apparatus comprising cover plates disposed on two bodies installed across a gap, in a manner openable by hinges, wherein each cover plate is inclined inward of the gap. The sectional shape of the two cover plates in a combined state is approximately in a V-shape. Each...http://www.google.co.uk/patents/US5058350?utm_source=gb-gplus-sharePatent US5058350 - Expansion joint apparatus
