Invention Grant
US08136744B2 Extendable sprinkler device 失效
可扩展喷水装置

Extendable sprinkler device
Abstract:
An extendable sprinkler device comprises a base cylinder having a first end fluidly communicable with a second end via a through passageway. A primary extension assembly is coupled within the through passageway of the base cylinder and is positionable between collapsed and extended positions. The primary extension assembly comprises a primary extension cylinder having a first end fluidly communicable with a second end via a through passageway. A stop is coupled to the first end of the primary extension cylinder. An actuator cylinder is coupled within the primary extension cylinder. The actuator cylinder comprises a first end fluidly communicable with a second end via a through passageway. The second end of the actuator cylinder is coupled with the second end of the primary extension cylinder.
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