Patent ID: 9725237
Date: 2017-08-08
CPC Classifications: B65D

Claim:
1. A device for the sealing of a manhole, the device comprising: a contact disc selectively securable to the manhole; and a sealing assembly comprising an inflatable air bladder, a first retention member, and a second retention member, the contact disc and the sealing assembly being rotatably connected together by a plurality of notched posts that are connected to the second retention member, the sealing assembly being configured to environmentally seal the manhole, the sealing assembly being rotatably connected to the contact disc such that the sealing assembly may be freely rotated relative to the contact disc while the contact disc is secured to the manhole, the first retention member and the second retention member each having an outer diameter that is larger than an outer diameter of the inflatable air bladder when the inflatable air bladder is in an undeployed state.