Boom and counter boom of the crane 2.13 Trolleys for the movement of the load m 1 and counterweight m2. The trolley shown in Fig. 13, consists of a chassis or metal base and four wheels which are to move into two rails. The rails that belong to the boom are longer than those of the counter boom.
Water easily passes though this EZ-Dry polyurethane foam. * Outdoor furniture such as seat and back cushions and mattresses. * Boat or marine cushions, golf carts, pool, patio or grading cushions. * Can also be used under Phifertex material and for filtering or padding whatever is exposed to large amounts of water.
Spex seat base pans offer a lightweight yet very strong base, and easily install to the wheelchair frame.The seat pan provides a solid base platform for cushions and has all the hole positions for mounting hip guides, armrests, and any other postural accessories to.Unique design is width adjustable for growth and versatility, and to suit different wheelchair widths. Hard mounting clamps: Seat pan is bolted to frame. 2  For permanent fixture to wheelchair frame (no drillings required). 3  For transit use the hard mounting clamps must be used. 4  WC20 and ISO 16840-4 certified in motor vehicle transportation.