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US 5,393,165 AGranted
Anchor bolt repair coupling with preloading jack and epoxy injection
OwnerRobert L. Rowan, Jr.inventor
Life of this patent
Estimating the term…
Abstract
An improved device for repairing failed anchor members that hold machinery to foundations is provided. An anchor bolt repair coupling engages a failed anchor member through the use of grips, a preloading jack, and epoxy injection to facilitate the repair of the failed member.
Claims31
A repair coupling for repairing a broken anchor bolt, which comprises:
- a coupling base having an internal wall defining an internal chamber opened at one end, and having a threaded portion at another end for receiving a threaded member;
- a plurality of grips each having a serrated face located in said internal chamber for gripping said broken anchor bolt;
- a preloading jack for preloading the repair coupling to a predetermined level, said preloading jack having a jacking surface;
- and
- engaging means for engaging the grips against said broken anchor bolt, at substantially said preloading level.
2 more elements
A repair coupling for repairing a broken anchor member, which comprises:
- a coupling base having an outside surface, an internal wall defining an internal chamber open at one end, and a threaded receptacle at another end for receiving a first anchor member;
- a plurality of grips located in the chamber for gripping the broken anchor member;
- a spacing means for positioning the grips within the chamber;
- and
- a preloading jack for preloading the repair coupling to a predetermined level having a jacking surface and an external threaded portion capable of mating with the threaded receptacle of said coupling base.
2 more elements
A method for repairing a failed anchor member comprising the steps of:
- removing foundation surrounding the failed member to produce a repair region of sufficient depth to expose a portion of the failed member;
- removing all but a short stub of the exposed portion of the failed anchor member;
- installing upon the failed anchor member a repair coupling comprising a coupling base having an internal wall defining an internal chamber open at one end and having a threaded portion at another end for receiving a threaded member, a plurality of grips located in said internal chamber for gripping said failed anchor member, and a preloading jack having a jacking surface for applying a preload to the repair coupling to a predetermined level;
- and
- activating the preloading jack to preload said repair coupling to a predetermined level.
2 more elements
Dependencies are inferred from the claim text.