Manhole cover locks, lockable manhole covers, and methods for locking a manhole cover
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United States of America Patent
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Sep 19, 2017
Issued Date -
N/A
app pub date -
Sep 14, 2016
filing date -
Sep 15, 2015
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A locking assembly attachable to a manhole cover includes an arm disposable in a lowered position with the arm disposed in a first orientation engageable with a manhole frame supporting the manhole cover to inhibit removal of the manhole cover from a manhole frame, and disposable in a raised position and in a second orientation operable to allow removal of the manhole cover from the manhole frame. In an embodiment, the locking assembly may include the arm attached to a movable member having a spiral, helix, or curved groove and in which the movable arm is receivable in a bushing and a pin receivable in the groove.
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