Coring tool alignment system
AssigneeSewer Tap Inc.
InventorsTracy F. Wadley, Richard F. Keif
Life of this patent
Estimating the term…
Abstract
A compact assembly for aligning a coring tool relative to a pipe sidewall. The coring tool includes a hollow, cylindrical hole saw mounted to an arbor that has an elongated pilot shaft centered in the hole saw. The assembly is made up of a base plate that is attachable to the pipe sidewall. A tubular sleeve is mounted to the base plate and has a bore diameter sized for receiving the pilot shaft as the hole saw is advanced toward and saws through the pipe wall, and the entire assembly is sized to fit inside the hole saw as the hole saw saws through the pipe sidewall.
Claims16
An assembly for aligning a coring tool relative to a pipe sidewall, wherein the coring tool includes a hollow, cylindrical hole saw mounted to an arbor that has an elongated pilot shaft centered in the hole saw, the assembly comprising:
- a base plate attachable to the pipe sidewall, wherein the base plate includes a clamping device configured to secure the base plate to a wall defined by an existing hole, said clamping device being adjustable to secure the base plate to walls defined by existing holes having different diameters;
- a tubular sleeve mounted to the base plate and having a bore diameter sized for receiving the pilot shaft as the hole saw is advanced toward and saws through the pipe sidewall;
- wherein the base plate is sized to fit inside the hole saw as the hole saw saws through the pipe sidewall.
A method of aligning a coring tool relative to a pipe sidewall through which a hole is to be made, wherein the coring tool includes a hollow, cylindrical hole saw mounted to an arbor that has an elongated pilot shaft centered in the hole saw, the method comprising the steps of:
- drilling apertures in the pipe sidewall;
- moving a base plate having a sleeve thereon for receiving the pilot shaft into contact with the pipe;
- attaching the base plate to the pipe sidewall with fasteners, wherein the apertures receive the fasteners;
- and
- advancing the hole saw through the pipe sidewall with the pilot shaft received in the sleeve and so that the base plate moves inside of the hole saw as the hole saw is advanced through the pipe sidewall.
A method of aligning a coring tool relative to a pipe sidewall through which a hole is to be made in a manner that enlarges an existing hole formed in the pipe sidewall, wherein the coring tool includes a hollow, cylindrical hole saw mounted to an arbor that has an elongated pilot shaft centered in the hole saw, the method comprising the steps of:
- drilling apertures in the pipe sidewall:
- moving a base plate having a sleeve thereon for receiving the pilot shaft into contact with the pipe;
- attaching the base plate to the pipe sidewall with fasteners, wherein the apertures receive the fasteners;
- and
- advancing the hole saw through the pipe sidewall with the pilot shaft received in the sleeve and so that the base plate moves inside of the hole saw as the hole saw is advanced through the pipe sidewall to enlarge the existing hole.
Dependencies are inferred from the claim text.