Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Plural pipe sections
Reexamination Certificate
2007-04-23
2008-12-16
Singh, Sunil (Department: 3672)
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Plural pipe sections
C405S174000, C175S022000
Reexamination Certificate
active
07465124
ABSTRACT:
A ground piercing pipe tool for carrying and depositing pipes of different inner diameter under a ground surface, comprising a ground piercing tip and impact-receiving end cap respectively connected to forward and rear ends of a rod and characterized by at least one of the tip and end cap being releasably connected to the rod so as to allow the pipes to receive the rod and further characterized by the tip and end cap having radially spaced outer supports dimensioned to engage inner surfaces of different ones of the pipes at tip and end cap ends thereof and to longitudinally support the pipes on the rod for selective deposit under the ground surface upon removal of one of the tip or end cap.
REFERENCES:
patent: 790910 (1905-05-01), McClintock
Meads Robert R.
Singh Sunil
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