Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – By means advancing along terrain and guiding pipe or cable...
Reexamination Certificate
2006-02-02
2009-10-27
Bagnell, David J (Department: 3672)
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
By means advancing along terrain and guiding pipe or cable...
C405S181000, C405S174000, C405S175000
Reexamination Certificate
active
07607863
ABSTRACT:
A trench box, including a pair of oppositely disposed parallel elongated sidewalls defining a work volume, distal and proximal support members extending between the sidewalls, and a track positioned between the sidewalls. Track adjusting members extend between the track and the support members and a movable tram connecting plate is connected to the track. An actuator is coupled to the track and energizable to move the tram connecting plate and a tool module is operationally connectable to the tram connecting plate. A pipe dispensing assembly and a gravel hopper assembly are positionable within the working volume.
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Andrish Sean D
Bagnell David J
Brannon C. John
Brannon & Associates PC
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