Tamper resistant closure mechanism for a utility vault

摘要

A nut configured to threadably engage an external thread of a bolt is provided. The nut generally comprises an upper portion that defines a first thread, a lower portion that defines a second thread, and a sidewall portion that connects the upper portion and the lower portion. The upper portion may be separated from the lower portion by a gap, and the sidewall portion may include a first sidewall spaced apart from a second sidewall.

主权项

1. A tamper resistant closure mechanism for selectively securing a lid to a utility vault, comprising:
a utility vault having a plurality of sidewalls and an opening; a cap operably engaged to said utility vault; a lid sized to rest on said cap and cover said opening of said utility vault; a locking assembly interconnected to said cap and comprising:
an upper portion having an aperture configured to receive a bolt;a lower portion spaced apart from the upper portion by a gap, the lower portion comprising a first lower portion plate opposed by a second lower portion plate, the first lower portion plate and the second lower portion plate each having a leading edge with an arcuate portion configured to matingly engage an external thread of the bolt; anda sidewall portion, the sidewall portion comprising a first sidewall opposed by, and spaced apart from, a second sidewall, wherein the first sidewall integrally connects the upper portion and the first lower portion plate, and wherein the second sidewall integrally connects the upper portion and the second lower portion plate.