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US 12,208,546 B2Granted
Manhole urethane mold and method of producing the same
AssigneeOldcastle Infrastructure, Inc.
InventorsJacob Nohl, Alec Gausman, Craig Knochenmus
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Abstract
Process and mold embodiments are described herein for creating polyurethane molds that allow for the production of manhole bases.
Claims2
A method of manufacturing a manhole component, comprising:
- creating a first mold having a void defining at least one channel extending from a first end to a second end;
- inserting a reinforcing structure into the first mold, said reinforcing structure including a plate with one or more lifting attachments, said plate positioned such that the at least one channel is positioned on one side of the plate and the one or more lifting attachments are positioned on an opposite side of the plate;
- pouring a polymer into the first mold;
- curing the polymer to create a second mold;
- attaching one or more hole formers to said second mold to create a modified second mold;
- using said one or more lifting attachments, positioning said modified second mold in a structure;
- and
- using said modified second mold, pouring a concrete manhole component.
5 more elements
Dependencies are inferred from the claim text.