Patent ID: 11920318
Assignee: OBJECTVIDEO LABS, LLC
Field: Measurement (Instruments)
Classification: CPC E  F  G  H | IPC E  F  G  H

Claim 13:
14. The manhole device of claim 9, wherein:
the one or more sensors include (i) a first set of one or more sensors configured to detect when the manhole cover reaches a lower-raised position of the manhole cover and (ii) a second set of one or more sensors configured to detect when the manhole cover reaches a higher-raised position of the manhole cover,
the lower-raised position of the manhole cover is higher than a resting position of the manhole cover with respect to the bottom surface of the canister such that a space between a lip of the manhole cover and a lip of the canister is greater when the manhole cover is in the lower-raised position when compared to the resting position, and
the higher-raised position of the manhole cover is higher than the lower-raised position of the manhole cover with respect to the bottom surface of the canister such that the space between a lip of the manhole cover and a lip of the canister is greater when the manhole cover is in the higher-raised position when compared to the lower-raised position.