Manhole

• US 9,109,342 B1
• Filed: 12/16/2010
• Issued: 08/18/2015
• Est. Priority Date: 12/23/2009
• Status: Active Grant

• Current Assignee: Monobend Technologies LLC
• Original Assignee: Monobend Technologies LLC
• Inventors: Srackangast, James V.
• Primary Examiner(s): MURPHY, KEVIN F
• Application Number:
  US12/970,502
• Time in Patent Office: 1,706 Days
• Field of Search: 137/236.1, 137/363, 137/372, 52/20, 52/21, 220/484
• US Class Current: 1/1
• CPC Class Codes: E02D 29/12 Manhole shafts; Other inspection or access chambers; Accessories therefor for underground tanks B65D90/10; for sewerage E03F5/02 ; climbing irons or ladders E06C9/00
• CPC Class Codes: E03F 5/02 Manhole shafts or other inspection chambers in general E02D29/12; Snow-filling openings; accessories covers or frames for manholes or the like E02D29/14
• CPC Class Codes: E03F 5/021 Connection of sewer pipes to manhole shaft

Abstract

A manhole for connecting fluid flow between and for providing access to an inlet pipe and an outlet pipe angularly oriented to one another in a sewage, storm water or like fluid handling system. The manhole comprises an upright housing which defines a manhole interior, the housing having first and second essentially planar upstanding outer sidewalls angularly oriented to one another at substantially the same angle as between the inlet and outlet pipes and a curved upstanding outer side wall extending between the first and second planar sidewalls. First and second openings are formed respectively through the first and second planar sidewalls into the manhole interior for receiving respective ends of the inlet and outlet pipes. A base section within the manhole interior defines a curvilinear fluid flow trough between the first and second openings for conveying fluid flow from the inlet pipe to the outlet pipe.

Claims

1. A manhole for connecting fluid flow between and for providing access to an inlet pipe and an outlet pipe angularly oriented to one another in a utility system, including a sewage or storm water utility system, the manhole comprising an upright housing defining a manhole interior, the housing being generally in the form of a circular sector defined by adjacent first and second essentially planar upstanding outer sidewalls extending generally as respective radii of the circular sector from adjacent a common center to respective outer distal wall ends, the sidewalls being angularly oriented to one another at substantially the same angle as between the inlet and outlet pipes, and a curved upstanding outer side wall extending arcuately between the outer distal wall ends of the first and second planar sidewalls, first and second openings formed respectively through the first and second planar sidewalls into the manhole interior for receiving respective ends of the inlet and outlet pipes, and a sector-shaped base section within the manhole interior defining a curvilinear fluid flow trough between the first and second openings for conveying fluid flow from the inlet pipe to the outlet pipe.

2. A manhole according to claim 1, wherein each of the first and second openings comprises an annular shoulder countersunk into the respective first and second planar outer walls for abutment with the respective ends of the inlet and outlet pipes.

3. A manhole according to claim 1, wherein the trough has a compound arcuate curvature longitudinally and transversely of the trough.

4. A manhole according to claim 1, wherein the trough is upwardly open.

5. A manhole according to claim 1, further comprising means for sealing the ends of the inlet and outlet pipes respectively to the first and second planar sidewalls within the respective first and second openings thereof.

6. A manhole according to claim 1, wherein the housing further comprises a top section spanning between the first and second planar outer walls and the curved outer wall, the top section having an opening for providing access into the manhole interior.

7. A manhole according to claim 1, wherein the trough has a curvature generally corresponding to the curved outer wall.

8. A manhole according to claim 7, wherein the first and second planar outer walls have a horizontal dimension selected to accommodate the lateral diameter of the inlet and outlet pipes.

9. A manhole according to claim 1, wherein the first and second planar outer walls have a horizontal dimension selected to accommodate the lateral diameter of the inlet and outlet pipes.