Back to results
US 2021/0154750 A1Published application
Hole saw arbor
OwnerHarry Omer MORRISON, JR.inventor
Life of this patent
Estimating the term…
Abstract
A hole saw arbor with mechanically automated plug removal to automatically remove the center plug of debris following drilling with the hole saw. A slidable collar is placed in an upper position on a threaded shaft to drill with the hole saw, and slid to a lower position on the threaded shaft for automated function of an ejection plate to rise within the hole saw to slowly eject a plug of removed material.
Claims16
A hole saw arbor comprising:
- a threaded shaft;
- a slidable collar adapted to slide along the threaded shaft without rotation;
- an ejector mounted to a first end of the threaded shaft;
- and
- a non-threaded shaft at a second end of the threaded shaft opposite the first end,
- wherein the slidable collar is adapted to secure a hole saw for rotation with the threaded shaft.
3 more elements
A hole saw system comprising:
- a hole saw;
- and
- a hole saw arbor comprising:
- a threaded shaft;
- a slidable collar adapted to slide along the threaded shaft without rotation;
- a mechanical feature mounted to a first end of the threaded shaft;
- and
- a non-threaded shaft at a second end of the threaded shaft opposite the first end, wherein
- the slidable collar is adapted to secure a hole saw for rotation with the threaded shaft.
6 more elements
A method of mechanically ejecting a plug of removed material from inside a hole saw after drilling, comprising:
- sliding a slidable collar from an upper drilling position where the slidable collar is mated to the base of a hole saw, to a lower ejection position where the slidable collar is slid away from the base of the hole saw;
- holding the hole saw from rotation with rotation of a power drill;
- and
- power rotating the shaft of the hole saw arbor to move an ejector from a first drilling position within the hole saw, to a second ejection position wherein the ejector moves toward a cutting edge of the hole saw.
1 more element
Dependencies are inferred from the claim text.