Patent ID: 9149827
Filing Date: 2015-10-06
Classification: B05B

Abstract:
1. An irrigation sprinkler, comprising: an outer case having an upstream end and a downstream end; a riser having a downstream end and an upstream end and telescopically extensible from the outer case including a nozzle at the downstream end of the riser; a coil spring surrounding the riser and normally holding the riser in a lower retracted position within the outer case, the coil spring being dimensioned and configured to permit extension of the riser to a raised upper position when pressurized water is introduced into the outer case; and a shock absorber comprising at least one spring member; the shock absorber positioned between a lower-most upstream end of the riser and a rigid structure in the upstream end of the case for lessening the forces otherwise exerted on the riser during rapid retraction of the riser.