B - Operations – Transporting – 05 – B
Patent
B - Operations, Transporting
05
B
299/13
B05B 3/02 (2006.01) B05B 3/04 (2006.01) B05B 15/06 (2006.01)
Patent
CA 1050588
TITLE: RESILIENT SPRINKLER RISER Abstract of the Disclosure A resilient sprinkler riser is described for mounting a pulsating type sprinkler head wherein a nozzle is utilized to direct a spray jet of water in a radial direction from a vertical axis of rotation while a pivoted deflector member operates to rotate the nozzle about the vertical axis. The riser includes a flexible tube that is coaxially mounted within an elongated closed helical tension spring. The spring is fastened at its lower end relative to the tube while its upper end is free to slide coaxially over the tube length. The spring is pretensioned to hold the pipe in an upright con- dition under the reaction forces exerted by a jet of water exiting through the sprinkler nozzle. However, the spring tension is not sufficient to hold the tube in an upright condition when excessive external lateral forces are applied. When this happens, the riser will deflect in the direction of the force. When the force is removed, the riser will spring back to a normal upright condition.
268883
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