Hydraulic and earth engineering – Earth treatment or control – Chemical
Reexamination Certificate
2005-04-05
2005-04-05
Shackelford, Heather (Department: 3673)
Hydraulic and earth engineering
Earth treatment or control
Chemical
C405S269000
Reexamination Certificate
active
06874976
ABSTRACT:
A common feature of the method and apparatus for multipoint grouting resides in using a multiple injection apparatus having a plurality of unit pumps in one plant, driven independently of each other and controlled by a centralized control device. The plurality of the unit pumps are connected through ducts to a plurality of injection pipes each having an outlet, inserted in a plurality of injection points in ground. By operations of the plurality of the unit pumps, ground improving material is injected from the plurality of the outlets into the plurality of the injection points in the ground.
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Kyokado Engineering Co. Ltd.
Saldano Lisa M.
Shackelford Heather
Venable LLP
Voorhees Catherine M.
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