Hydraulic and earth engineering – Foundation – Columnar structure
Reexamination Certificate
2006-10-03
2006-10-03
Lagman, Frederick L. (Department: 3673)
Hydraulic and earth engineering
Foundation
Columnar structure
C405S254000, C405S252100, C405S231000
Reexamination Certificate
active
07114886
ABSTRACT:
A structural helical pile having an elongate shaft member defining a longitudinal axis. The structural helical pile also comprises a radially extending, generally helical load bearing member integral with the shaft member and projecting outwardly from the longitudinal axis of the shaft member. The helical load bearing member has a leading edge and a trailing edge. The respective leading and trailing edges intersect the shaft member in spaced relationship along the longitudinal length of the shaft member. The helical load bearing member further comprises at least one rib integrally formed therein. In this aspect, each rib extends outwardly from the longitudinal axis of the shaft member and has a substantially uniform cross-sectional thickness.
REFERENCES:
patent: 5575122 (1996-11-01), Hamilton et al.
patent: 6352391 (2002-03-01), Jones
patent: 6394704 (2002-05-01), Saeki et al.
patent: 2002-348864 (2002-12-01), None
Cantsink Manufacturing, Inc.
Lagman Frederick L.
Needle & Rosenberg P.C.
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