Patent ID: 6695526
Filing Date: 2004-02-24
Classification: E02D

Abstract:
An adjustable manhole apparatus configured to be positioned over a manhole extension, the apparatus comprising:a) a frame, configured to be directly disposed on the manhole extension, having: 1) a bottom edge, designed to be rotatably disposed on the manhole extension; 2) an angled top edge, forming an angle between approximately two to ten degrees with the bottom edge; and 3) a flange, extending outwardly from the bottom edge and configured to abut the upper surface of the manhole extension to support the frame on the manhole extension; and 4) a shoulder, formed at the angled top edge of the frame: and 5) a vertical wall, surrounding the shoulder of the frame: b) a rotatable ring, rotatably and directly disposed on the base ring, having: 1) a bottom edge, designed to be rotatably and directly disposed on the shoulder of, and between the vertical wall of, the angled top edge of the frame; and 2) an angled top edge, forming an angle between approximately two to ten degrees from the bottom edge of the rotatable ring; and 3) a shoulder, formed at the angled top edge of the rotatable ring: and 4) a vertical wall, surrounding the shoulder of the rotatable ring: and c) a cover, removably and directly disposed on the shoulder of, and between the vertical wall of, the rotatably ring, configured to cover access to the manhole extension.