Sprinkler system
Patent 5040729 Issued on August 20, 1991. Estimated Expiration Date: 
February 15, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 15, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 471247 1337744 1710888 2879083 2907590 3684179 3784233 3900221 Expansion joint Coupling device InventorApplicationNo. 480713 filed on 02/15/1990US Classes:239/201, Embedded or buried sprinkler239/207, Multiple spray heads connected for serial flow239/269, With flexible or articulated flow line section285/147.1, Plural swivels285/181, Serially connected, adjustable285/276, With ball, ring or pin detent285/921SNAP-FITExaminersPrimary: Kashnikow, AndresAssistant: Grant, William Foreign Patent References
International ClassB05B 015/08AbstractA sprinkler system employs an articulated riser for adjustable sprinkler head positioning. The system allows for positioning each sprinkler head to compensate for ground irregularities by adjusting the position of the riser. The riser may be supplied for field use in assembled condition for direct fixed connection to T joints on the water main without excess ground digging. This substantially reduces part count for field use and system installation time. The joints of the riser provide leakproof movable connections which allow for the position adjustments of the riser and connected head.Field of SearchWITH FIXED SUPPORT FOR OR GROUND INSTALLED SUPPLY MEANS (E.G., STATIC CONSTRUCTIONAL INSTALLATIONS)Embedded or buried sprinkler With sprinkler head elevating means Elevating means responsive to flow of spray fluid With spring assisted retraction Multiple spray heads connected for serial flow With flexible or articulated flow line section Serially connected, adjustable Packed With ball, ring or pin detent SNAP-FIT ELBOW | |
