Invention Grant
- Patent Title: Manhole frame with one or more handholds
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Application No.: US15813483Application Date: 2017-11-15
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Publication No.: US10030352B2Publication Date: 2018-07-24
- Inventor: Ronald Armstrong
- Applicant: Ronald Armstrong
- Agency: Oyen Wiggs Green & Mutala LLP
- Agent Bruce M. Green
- Main IPC: E02D29/12
- IPC: E02D29/12 ; E02D29/14

Abstract:
A manhole frame having one or more handholds near the entrance to the manhole so that the ladder rungs can be made lower and the access space at the entrance to the manhole thereby increased. The handhold can be cast into the cover-supporting lip, or can be a movable handle which is below the level of the manhole when not in use or extended above ground level when in use.
Public/Granted literature
- US20180073213A1 MANHOLE FRAME WITH ONE OR MORE HANDHOLDS Public/Granted day:2018-03-15
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