Method and apparatus for forming a trench

Details Method and apparatus for forming a trench Method and apparatus for forming a trench

1989-07-07

1991-02-19

Corbin, David H.

Hydraulic and earth engineering

Earth treatment or control

Shoring, bracing, or cave-in prevention

249 10, 405118, E02B 500

Patent

active

049938789

ABSTRACT:
A device for forming a trench having a pair of frame members, connecting rods disposed between the frame members to maintain the frame members in a fixed position relative to each other, anchoring means attached to the frame members for positioning the frame members relative to the ground and a form removably held in a fixed position between the frame members having an upper surface and a shaped lower surface, the shaped lower surface providing means for molding a moldable trench composition into the shape.

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patent: 4472078 (1984-09-01), Karbstein
patent: 4787773 (1987-05-01), Kehler
patent: 4844655 (1989-07-01), Aleshire

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