Locks – Special application – For closures
Patent
1996-01-22
1999-02-16
Boucher, Darnell M.
Locks
Special application
For closures
70 63, 70 77, 70379R, 70DIG34, B65D 5514
Patent
active
058709118
ABSTRACT:
A lock for meter boxes and similar enclosures includes an outer case with a central bore mounted on an electric meter box. Inside the bore are two extrusions of unequal length spaced 90 degrees apart. A sleeve having a deep bore is held in the case by a screw, and a spring assembly transmits motion from the screw to the sleeve. The sleeve includes a flange at its end with an arcuate cutout portion which spans both extrusions. The sleeve further includes several internal grooves for retaining a barrel type lock which prevents access to the screw. A heavy cover plate is welded to the top of the sleeve so that it overlays and retains the door of the meter box. To unlock the meter box lock, the barrel lock is removed to allow access to the screw. As the screw is unscrewed, the sleeve moves with the screw until the flange on the sleeve clears the shorter extrusion. The sleeve then rotates with the screw until the flange engages the longer extrusion. In this position, the cover plate no longer overlays the door, and the door can be opened.
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Swing Guard Lock Product Data and Field Instructions E.J. Brooks Company Apr. 1987.
Boucher Darnell M.
Davis Jeffrey M.
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