Hole saw drill guide

Patent metadata

Field	Value
Publication number	US-9969010-B2
Application number	US-201514874780-A
Country	US
Kind code	B2
Filing date	Oct 5, 2015
Priority date	Mar 6, 2015
Publication date	May 15, 2018
Grant date	May 15, 2018

Abstract

A hole saw drill guide is described. The drill guide can be used when drilling holes in pipe or tubes. The hole saw drill guide includes a guide tube base assembly and an arbor shaft assembly. The guide tube base assembly is chained or otherwise secured to a pipe. The arbor shaft assembly is removably engaged with the guide tube base assembly and during use of the device, rotates within a guide tube of the base.

First claim

What is claimed is:

1. A hole saw drill guide comprising: a guide tube base assembly including a guide tube defining a distal edge, a hollow interior and a linear slot extending from the distal edge along at least a portion of the length of the guide tube; an arbor shaft assembly including a central shaft, an outer housing, a plurality of bearings for rotatably supporting the central shaft within the outer housing, and an outwardly projecting guide pin engaged with the outer housing; wherein the arbor shaft assembly is sized to be insertably received within the hollow interior of the guide tube and upon positioning the guide pin of the arbor shaft assembly within the slot defined by the guide tube, the central shaft of the arbor shaft assembly is rotatably supported within the guide tube of the guide tube base assembly while allowing linear displacement of the entire arbor shaft assembly relative to the guide tube base assembly, thereby coupling the outer housing of the arbor shaft assembly to the guide tube of the guide tube base assembly.

2. The hole saw drill guide of claim 1 wherein upon positioning the guide pin of the arbor shaft assembly within the slot defined by the guide tube, the axis of rotation of the central shaft of the arbor shaft assembly coincides and is aligned with the longitudinal axis of the guide tube.

3. The hole saw drill guide of claim 1 wherein the guide tube base assembly further includes securing provisions for releasably securing the guide tube base assembly to a workpiece.

4. The hole saw drill guide of claim 3 wherein the securing provisions include a chain releasably affixed to the guide tube base assembly and chain adjustment provisions.

5. The hole saw drill guide of claim 3 wherein the securing provisions include a strap for releasably affixing the guide tube base assembly to the workpiece.

6. The hole saw drill guide of claim 1 wherein the guide tube base assembly further includes a mounting base that defines a hollow interior, the guide tube secured to the mounting base.

7. The hole saw drill guide of claim 6 wherein the guide tube base assembly further includes a vacuum port in communication with the hollow interior defined by the mounting base.

8. The hole saw drill guide of claim 6 wherein the mounting base defines an underside having a V-shaped configuration.

9. The hole saw drill guide of claim 1 wherein the central shaft defines a proximal end and an opposite distal end, the arbor shaft assembly further including a power drill connection at the proximal end of the central shaft.

10. The hole saw drill guide of claim 9 , the arbor shaft assembly further includes a hole saw engaged at the distal end of the central shaft.

11. The hole saw drill guide of claim 10 wherein the hole saw is releasably engaged at the distal end of the central shaft.

12. The hole saw drill guide of claim 11 wherein the hole saw includes a pilot drill.

13. The hole saw drill guide of claim 9 wherein the power drill connection is removably engageable with the central shaft.

14. The hole saw drill guide of claim 1 wherein the plurality of bearings include a proximal bearing assembly and a distal bearing assembly, each disposed between the central shaft and the outer housing.

15. A hole saw drill guide comprising:
a guide tube base assembly including a mounting base, a guide tube extending from the mounting base and defining a distal edge, a longitudinal axis, and endwall, a hollow interior and slot extending between the distal edge and the endwall along at least a portion of the length of the guide tube, the slot being parallel with the longitudinal axis;
an arbor shaft assembly including a central shaft, an outer housing, a plurality of bearings for rotatably supporting the central shaft within the outer housing, and an outwardly projecting guide pin engaged with the outer housing;
wherein the arbor shaft assembly is sized to be insertably received within the hollow interior of the guide tube and upon positioning the guide pin of the arbor shaft assembly within the slot defined by the guide tube, the central shaft of the arbor shaft assembly is rotatably supported within the guide tube of the guide tube base assembly,
wherein the mounting base includes chain adjustment provisions that include a chain and an adjustment nut, such that rotation of the adjustment nut results in linear displacement of the chain to either lengthen or shorten the length of the chain and upon positioning and tightening the chain about a pipe or workpiece, the chain extends directly under a location at which a hole or aperture is to be formed.

16. The hole saw drill guide of claim 15 wherein upon positioning the guide pin of the arbor shaft assembly within the slot defined by the guide tube, the axis of rotation of the central shaft of the arbor shaft assembly coincides and is aligned with the longitudinal axis of the guide tube.

17. A hole saw drill guide comprising:
a guide tube base assembly including a guide tube defining a hollow interior and an S-shaped slot extending along at least a portion of the length of the guide tube;
an arbor shaft assembly including a central shaft, an outer housing, a plurality of bearings for rotatably supporting the central shaft within the outer housing, and an outwardly projecting guide pin engaged with the outer housing;
wherein the arbor shaft assembly is sized to be insertably received within the hollow interior of the guide tube and upon positioning the guide pin of the arbor shaft assembly within the slot defined by the guide tube, the central shaft of the arbor shaft assembly is rotatably supported within the guide tube of the guide tube base assembly.

18. The hole saw drill guide of claim 17 wherein the S-shaped slot extends partially along the length of the guide tube.

19. The hole saw drill guide of claim 17 wherein the S-shaped slot extends along the entire length of the guide tube.

20. The hole saw drill guide of claim 17 wherein upon positioning the guide pin of the arbor shaft assembly within the slot defined by the guide tube, the axis of rotation of the central shaft of the arbor shaft assembly coincides and is aligned with the longitudinal axis of the guide tube.

21. A hole saw drill guide comprising:
a guide tube base assembly including a guide tube defining a distal edge, a hollow interior, a linear slot extending from the distal edge along at least a portion of the length of the guide tube, and at least one slot shoulder between the distal edge and the slot;
an arbor shaft assembly including a central shaft, an outer housing, a plurality of bearings for rotatably supporting the central shaft within the outer housing, and an outwardly projecting guide pin engaged with the outer housing;
wherein the arbor shaft assembly is sized to be insertably received within the hollow interior of the guide tube and upon positioning the guide pin of the arbor shaft assembly within the slot defined by the guide tube, the central shaft of the arbor shaft assembly is rotatably supported within the guide tube of the guide tube base assembly, thereby coupling the outer housing of the arbor shaft assembly to the guide tube of the guide tube base assembly.

Assignees

• Ridge Tool Co

Inventors

• Chartier Glen R
• Tunningley James
• Krondorfer Harald
• Rosenthal Jörg

Classifications

• B23B47/281 Primary

  Jigs for drilling cylindrical parts · CPC title

• B23B2215/72

  Tubes, pipes · CPC title

• Y10T408/50

  with product handling or receiving means · CPC title

• B23B2270/30

  Chip guiding or removal · CPC title

• B25H1/0064

  Stands attached to the workpiece · CPC title