Precast concrete meter pit and method and apparatus for making same
AssigneePrecast Concepts, LLC
InventorsEdward J. Anderson, Geoffery S. Parrington, Eugene J. Pelchat, JR.
Life of this patent
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Abstract
A precast concrete meter pit consisting of a plurality of precast concrete hollow elongated cylindrical wall sections in end to end relation to one another is fabricated by utilizing a slip form packerhead apparatus in which the wall sections are formed with an annular slip ring when concrete is injected into the slip form apparatus.
Claims20
A meter pit comprising elongated precast wall sections of generally cylindrical configuration in end-to-end relation to one another, said pit being made from the steps comprising:
- (a) securing a slip ring within a concentric jacket;
- (b) positioning a pallet having said concentric jacket attached thereto on a turntable;
- (c) lowering a packerhead assembly within said jacket, said packerhead assembly having a concentric rollerhead provided with a trowel, said trowel having a-radially inwardly and downwardly inclined lower edge;
- (d) injecting concrete into an annular space between said jacket and said rollerhead for downward flow until the space is entirely filled;
- (e) raising said rollerhead and trowel as said annular space is being filled followed by removing said jacket;
- and
- (f) removing said slip ring from said wall sections.
A meter pit comprising a hollow, elongated precast concrete pipe of generally cylindrical configuration having a plurality of wall sections, said pit being made from the steps comprising:
- (a) positioning a pallet on a bottom plate and turntable, said pallet having an aligned outer concentric jacket, means for separating said plurality of wall sections from one another and an inner concentric rollerhead provided with a trowel having a radially inwardly and downwardly inclined lower edge which defines an inner beveled edge surface of meter pit;
- (b) injecting concrete into an annular space between said jacket and said rollerhead for downward gravity flow until the space is entirely filled;
- (c) raising said rollerhead and trowel as said annular space is being filled followed by removing said jacket;
- and
- (d) removing said separating means.
In apparatus for making a precast concrete meter pipe wherein a packerhead assembly includes a trowel assembly and a rollerhead assembly, a jacket in outer spaced concentric relation to said packerhead assembly, a slip ring positioned within said jacket and means for rotating said rollerhead assembly, the improvement comprising:
- said trowel assembly being of generally cylindrical configuration and terminating in a radially inwardly and downwardly inclined lower edge;
- and
- an annular pallet positioned beneath said trowel assembly having a riser circumscribing an inner annular edge thereof and extending upwardly within said trowel assembly.
A meter pit comprising a plurality of precast concrete hollow elongated cylindrical wall sections in end-to-end relation to one another, a first of said sections having a circular support ledge, said circular support ledge projecting radially inwardly from one end of said first section and a second of said sections including circumferentially spaced notches at one end.
Dependencies are inferred from the claim text.