US2016376781A1PendingUtilityA1

Polymer manhole base

35
Individually held — no corporate assignee on recordPriority: Mar 15, 2013Filed: Jun 23, 2016Published: Dec 29, 2016
Est. expiryMar 15, 2033(~6.6 yrs left)· nominal 20-yr term from priority
Inventors:Vincent A. Bussio
E03F 5/021Y10T137/7025E02D 29/12E03F 5/024E02D 29/10E02D 29/124
35
PatentIndex Score
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Cited by
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Claims

Abstract

A polymer manhole base may comprise a base portion having an upper surface. An annular sidewall may extend upward from the base portion and may circumscribe the upper surface. The manhole base may have a wastewater trough connecting a wastewater inlet and a wastewater outlet. An interior frame may correspond to the inlet or outlet.

Claims

exact text as granted — not AI-modified
1 . A manhole base comprising:
 a base portion having an upper surface;   an annular sidewall extending upward from the base portion and circumscribing the upper surface, said annular sidewall having a wastewater inlet opening and a wastewater outlet opening formed therein such that a laterally extending flowpath passes into and from said wastewater inlet opening and extends to and through said wastewater outlet opening;   a wastewater trough formed in the upper surface of the base portion, the wastewater trough defining at least a lower portion of the flowpath and extending between the wastewater inlet and the wastewater outlet; and   an interior frame extending radially inwardly from an inner surface of the sidewall, wherein the wastewater trough and the interior frame collectively surround at least a portion of the flowpath;   wherein the annular sidewall comprises an inner diameter.   
     
     
         2 . The manhole base of  claim 1 , wherein the interior frame comprises a medial surface, a lateral surface, an inner surface, and an outer surface. 
     
     
         3 . The manhole base of  claim 2 , wherein the inner surface and outer surface of the interior frame are annular. 
     
     
         4 . The manhole base of  claim 2 , wherein the inner surface of the interior frame is annular and the outer surface of the interior frame is polygonal. 
     
     
         5 . The manhole base of  claim 2 , wherein the interior frame is disposed against the annular sidewall and wherein a thickness of said frame is at least two times a thickness of the annular sidewall. 
     
     
         6 . The manhole base of  claim 1 , wherein a thickness of the interior frame is between 1/30th and ⅛th of the inner diameter. 
     
     
         7 . The manhole base of  claim 1 , wherein a thickness of the interior frame is between 1/24th and 1/10th of the inner diameter. 
     
     
         8 . The manhole base of  claim 1 , wherein a thickness of the interior frame is between 2 and 8 inches. 
     
     
         9 . The manhole base of  claim 1 , wherein the manhole base comprises a resin and an aggregate mixture. 
     
     
         10 . The manhole base of  claim 1 , wherein a thickness of the annular sidewall is less than 1/12th of the inner diameter. 
     
     
         11 . The manhole base of  claim 1 , wherein the wastewater trough comprises a ninety-degree bend. 
     
     
         12 . The manhole base of  claim 1 , wherein the wastewater trough is y-shaped. 
     
     
         13 . The manhole base of  claim 1 , wherein the inner diameter of the annular sidewall is between 48 inches and 60 inches. 
     
     
         14 . The manhole base of  claim 1 , further comprising a bench formed on the upper surface. 
     
     
         15 . The manhole base of  claim 14 , wherein the bench comprises a slope of between 1 degree and 45 degrees. 
     
     
         16 . The manhole base of  claim 1 , wherein the manhole base comprises a monolithic structure. 
     
     
         17 - 42 . (canceled) 
     
     
         43 . A manhole base comprising:
 a base portion having an upper surface;   an annular sidewall extending upward from the base portion and circumscribing the upper surface, said annular sidewall having a wastewater inlet opening and a wastewater outlet opening formed therein such that a laterally extending flowpath passes into and from said wastewater inlet opening and extends to and through said wastewater outlet opening;   a wastewater trough formed in the upper surface, the wastewater trough defining at least a lower portion of the flowpath and extending between the wastewater inlet and the wastewater outlet; and   an interior frame extending radially inwardly from an inner surface of the sidewall and surrounding at least a portion of the flowpath;   a bench formed on the upper surface;   wherein the annular sidewall comprises an inner diameter;   wherein a thickness of the annular sidewall is less than 1/12th of the inner diameter;   wherein the manhole base comprises a resin and an aggregate mixture;   wherein the interior frame comprises a medial surface, a lateral surface, an inner surface corresponding to the trough, and an outer surface;   wherein a thickness of the interior frame is between 1/24th and 1/10th of the inner diameter;   wherein the interior frame is disposed against the annular sidewall and wherein a thickness of said frame is at least two times a thickness of the annular sidewall;   wherein the inner diameter of the annular sidewall is between 48 inches and 60 inches;   wherein the bench comprises a slope of between 1 degree and 45 degrees;   wherein the manhole base comprises a monolithic structure;   wherein the frame forms part of an enclosed passage that completely circumscribes a portion of the flowpath.   
     
     
         44 . The manhole base of  claim 5 , wherein a thickness of said frame is at least three times a thickness of the annular sidewall. 
     
     
         45 . The manhole base of  claim 5 , wherein the frame forms part of an enclosed passage that completely circumscribes a portion of the flowpath. 
     
     
         46 . A manhole base comprising:
 a base portion having an upper surface;   an annular sidewall extending upward from the base portion and circumscribing the upper surface, said annular sidewall having a wastewater inlet opening and a wastewater outlet opening formed therein;   an interior frame extending radially inwardly from an inner surface of the sidewall;   wherein the interior frame forms part of a rectangle having a hole formed therein, wherein no portion of the interior frame extends outwardly beyond a perimeter of the rectangle, and wherein the hole and one of the inlet opening and the outlet opening are contiguous.   
     
     
         47 . The manhole base of  claim 46 , wherein the interior frame forms part of an enclosed passage that completely circumscribes a portion of the flowpath. 
     
     
         48 . The manhole base of  claim 46 , wherein the interior frame comprises a medial surface, a lateral surface, an inner surface, and an outer surface. 
     
     
         49 . The manhole base of  claim 48 , wherein the inner surface and outer surface of the interior frame are circular. 
     
     
         50 . The manhole base of  claim 48 , wherein the inner surface of the interior frame is circular and the outer surface of the interior frame is polygonal. 
     
     
         51 . The manhole base of  claim 48 , wherein the interior frame is disposed against the annular sidewall and wherein a thickness of said frame is at least two times a thickness of the annular sidewall. 
     
     
         52 . The manhole base of  claim 46 , wherein the annular sidewall comprises an inner diameter and a thickness of the interior frame is between 1/30th and ⅛th of the inner diameter. 
     
     
         53 . The manhole base of  claim 46 , wherein a thickness of the interior frame is between 2 and 8 inches. 
     
     
         54 . The manhole base of  claim 46 , wherein the manhole base comprises a resin and an aggregate mixture. 
     
     
         55 . The manhole base of  claim 46 , wherein the annular sidewall comprises an inner diameter and a thickness of the annular sidewall is less than 1/12th of the inner diameter. 
     
     
         56 . The manhole base of  claim 46 , further comprising a wastewater trough formed in the upper surface, the wastewater trough defining at least a lower portion of the flowpath and extending between the wastewater inlet and the wastewater outlet; and. 
     
     
         57 . The manhole base of  claim 46 , wherein the annular sidewall comprises an inner diameter, wherein said inner diameter is between 48 inches and 60 inches. 
     
     
         58 . The manhole base of  claim 46 , wherein the manhole base comprises a monolithic structure. 
     
     
         59 . A method of forming an access to a municipal wastewater system, said method comprising:
 excavating a hole;   placing a manhole base at a bottom of the hole, said manhole base comprising a base portion, an annular sidewall extending upward from the base portion, a wastewater inlet opening and a wastewater outlet opening formed in the annular sidewall, and a laterally extending flowpath extending from the inlet opening to the outlet opening;   connecting an upstream side of the municipal wastewater system to the inlet opening and a downstream side of the municipal wastewater system to the outlet opening;   placing one or more risers on top of the manhole base;   placing a cone on top of the one or more risers; and   backfilling the hole;   wherein the manhole base further comprises a thickened wall area surrounding at least a portion of the laterally extending flowpath, said thickened wall area disposed around one of the inlet opening and the outlet opening, said thickened wall area further having a thickness that is greater than a thickness of the annular sidewall.   
     
     
         60 . The method of  claim 59 , wherein the thickened wall area of the manhole base comprises an interior frame extending radially inwardly from an inner surface of the sidewall and surrounding at least a portion of the flowpath. 
     
     
         61 . The method of  claim 59 , wherein the thickened wall area forms part of an enclosed passage that completely circumscribes a portion of the flowpath. 
     
     
         62 . The method of  claim 59 , wherein the thickened wall area forms part of a rectangle having a hole in the middle, wherein no portion of the thickened wall area extends outwardly beyond a perimeter of the rectangle, and the hole is concentric with one of the inlet opening and the outlet opening. 
     
     
         63 . The method of  claim 61 , wherein the interior frame comprises a medial surface, a lateral surface, an inner surface, and an outer surface 
     
     
         64 . The method of  claim 63 , wherein the inner surface and outer surface of the interior frame are circular. 
     
     
         65 . The method of  claim 63 , wherein the inner surface of the interior frame is circular and the outer surface of the interior frame is polygonal. 
     
     
         66 . The method of  claim 59 , wherein the annular sidewall comprises an inner diameter, and a thickness of the thickened wall area is between 1/30th and ⅛th of the inner diameter. 
     
     
         67 . The method of  claim 59 , wherein a thickness of the thickened wall area is between 2 and 8 inches. 
     
     
         68 . The method of  claim 59 , wherein the thickened wall area is formed in the annular sidewall. 
     
     
         69 . The method of  claim 59 , wherein the manhole base comprises a resin and an aggregate mixture. 
     
     
         70 . The method of  claim 59 , wherein the annular sidewall comprises an inner diameter and a thickness of the annular sidewall is less than 1/12th of the inner diameter. 
     
     
         71 . The method of  claim 59 , wherein the manhole base comprises a monolithic structure.

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