Device for dislodging entraining and separating coarse and fine particulate matter layered on a synthetic playing surface

摘要

PCT No. PCT/GB92/00890 Sec. 371 Date May 18, 1994 Sec. 102(e) Date May 18, 1994 PCT Filed May 18, 1992 PCT Pub. No. WO92/20272 PCT Pub. Date Nov. 26, 1992A device for renovating synthetic grass playing surfaces which optionally include a layer of particulate material. The device comprises a plenum chamber (10) which directs a fast moving jet of air against the particulate so as to dislodge it and direct the particulate into a manifold (11) which partially surrounds the plenum chamber. The manifold is designed to separate out the fine particles and direct them to a collection area, and to lay the coarse particulate back on the surface. Filtering and collection apparatus is also described.