Patent ID: 7748927
Filing Date: 2010-07-06
Classification: E02D

Abstract:
1. In a manhole insert and tether apparatus having an insert body for seating in a manhole and having a tether opening, at least one tether-engaging member in the manhole wall, a tether having one end slidably extending through said tether opening and fixed to said tether engaging member and the opposite end of the tether extending above the insert body, wherein the improvement comprises a tether lock housing provided on the insert body at the tether opening; a compression fitting provided in said tether lock housing for slidably receiving the opposite end of the tether and selectively tightly securing the tether in said tether lock housing; a lock tab slidably fitted in said tether lock housing for selectively blocking access to said compression fitting and a lock removably engaging said lock tab for removably securing said lock tab on said tether lock housing and securing the insert body in the manhole.