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US 11,408,461 B2Granted
Captive bolt assembly for utility boxes
AssigneeNewBasis West, LLC
InventorsJoe Durkee, Chris Branson
Life of this patent
Estimating the term…
Abstract
A durable captive bolt assembly for use with subterranean utility boxes is described. The disclosed bolt assembly includes a fastener, a conical spring, a rigid washer, a deformable washer, and a bushing. The point and threads of the fastener are designed to clear debris from an internally threaded nut and reduce or eliminate cross threading, galling, and electrolysis.
Claims13
A utility box comprising:
- a utility box body designed to withstand subterranean conditions;
- a utility box cover comprising a plurality of openings for passing a fastener through the utility box cover and a plurality of bolt recesses;
- a plurality of internally threaded nuts;
- and
- a utility box fastener assembly wherein the fastener assembly comprises a lag screw, a conical spring, a rigid washer, a deformable washer, and a bushing, and wherein the lag screw comprises auger threads to remove dirt or debris from an internally threaded nut.
2 more elements
A utility box comprising:
- a utility box body designed to withstand subterranean conditions;
- a utility box cover comprising a plurality of openings for passing a fastener through the utility box cover and a plurality of bolt recesses;
- a plurality of internally threaded nuts;
- and
- a utility box fastener assembly comprising:
- a lag screw comprising a point, a shank, and a head wherein the shank is at least partially threaded with auger threads to remove dirt or debris and wherein the threaded portion of the shank is at least two inches long;
- a bushing;
- a deformable washer;
- a cone spring;
- and
- a rigid washer, wherein the cone spring is configured to compress as one of the plurality of internally threaded nuts is threadedly engaged onto the shank.
8 more elements
Dependencies are inferred from the claim text.