Power operated systems for aerating turf on sports playing fields comprised of power operated blowers, flow control valves and couplings for controlling the flow of air in the supply lines, and electrical control panels, and supply lines, namely subterranean flow lines and perforated pipes disposed below the playing field connected to the power operated blowers for creating a flow of air through the turf

'aerat':5 'air':26,61 'blower':15,55 'compris':11 'connect':50 'control':17,22,33 'coupl':20 'creat':57 'dispos':45 'electr':32 'field':10,49 'flow':16,24,40,59 'line':30,37,41 'name':38 'oper':2,14,54 'panel':34 'perfor':43 'pipe':44 'play':9,48 'power':1,13,53 'sport':8 'subterranean':39 'suppli':29,36 'system':3 'turf':6,64 'valv':18

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