Apparatus for establishing adjustable depth bed in trenches for utility lines and encasing the lines
First Claim
1. A movable unit for placing one or more utilities in an excavated trench, comprising:
- a hopper for receiving select material provided from a source;
a conveyor that receives select material from said hopper and dispenses the material from an outlet on the bottom of the excavated trench as the unit moves to establish a bedding;
a guide for placing a length of at least one utility on said established bedding as the unit moves; and
an outlet on said hopper from which material is dispensed onto the bedding to encase the at least one utility previously placed on the bedding.
1 Assignment
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Accused Products
Abstract
A mechanized unit that places a predetermined and adjustable depth of a selected bedding material on the bottom of a trench in the ground, then places on the bed a continuous length of a utility or utilities having a predetermined spatial relationship with each other and then encases the utility or utilities with additional select material to a predetermined and adjustable depth of cover in a continuous operation. The unit has a single hopper that receives and contains the material that is used both to form the bed and also to encase the one or more utilities laid on the bed. The hopper conveys material in the direction of movement of the unit and the material is dispensed from the conveyor into the trench to form the bed. An adjustable height blade is provided which both sets the bed height and also smoothes the bed upper surface. As the unit moves, the utility or utilities are laid on the bed upper surface. Thereafter, material is dispensed from the bottom of the hopper on top of and around the utility or utilities to encase them. An adjustable height blade is also provided to set the height of the encasement and also to smooth out its upper surface.
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Citations
18 Claims
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1. A movable unit for placing one or more utilities in an excavated trench, comprising:
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a hopper for receiving select material provided from a source;
a conveyor that receives select material from said hopper and dispenses the material from an outlet on the bottom of the excavated trench as the unit moves to establish a bedding;
a guide for placing a length of at least one utility on said established bedding as the unit moves; and
an outlet on said hopper from which material is dispensed onto the bedding to encase the at least one utility previously placed on the bedding. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification