Patent ID: 7905679
Filing Date: 2011-03-15
Classification: E02D,Y10T

Abstract:
1. A one-piece, unitary manhole cover comprising: an upper face; an outer circumferential edge; a lifting channel defined in said upper face; said lifting channel extending to said outer circumferential edge and defining a drainage opening in said outer circumferential edge, said channel including a channel floor having a first portion and a second portion, said second portion having a curved shape; and a lifting bar bridging said channel and spaced from said channel floor, said lifting bar including a lower surface facing said channel floor, said lower surface having a first portion and a second portion, wherein said first portion of said lifting bar lower surface is generally planar and wherein said second portion of said lifting bar lower surface includes a downwardly protruding lobe aligned above said curved second portion of said channel floor such that said lobe and said curved second portion of said floor cooperate to receive and provide leverage for a lifting tool.