Hydraulic and earth engineering – Drainage or irrigation
Reexamination Certificate
2005-06-07
2005-06-07
Lagman, Frederick L. (Department: 3673)
Hydraulic and earth engineering
Drainage or irrigation
C239S728000
Reexamination Certificate
active
06902351
ABSTRACT:
A method and means for reducing stress in a pivot irrigation pipeline by permitting the pipeline to be separated from the center pivot structure while maintaining the pipeline in alignment with the center pivot structure. The alignment assembly of this invention facilitates the reconnection of the pipeline to the center pivot structure when the irrigation system is going to be used to irrigate.
REFERENCES:
patent: 4074783 (1978-02-01), Arndt et al.
patent: 5435495 (1995-07-01), Davis
patent: 6036122 (2000-03-01), Gerdes et al.
Christensen Dale A.
McGee Ricky D.
Lagman Frederick L.
Thomte Dennis L.
Thomte Mazour & Niebergall
Valmont Industries, Inc.
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