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US 9,821,380 B1Granted
Quick release hole saw
AssigneeHole Dynamics, LLC
InventorScott Terris
Life of this patent
Estimating the term…
Abstract
A hole saw assembly having a drive shaft, drive disk and hole saw blade. The drive disk has a plurality of radially extending projections that engage with engagement slots in the side of the hole saw blade.
Claims4
A quick release hole saw engagement mechanism, comprising:
- a drive shaft;
- a drive disk non-rotateably connected to the drive shaft and having a plurality of drive latch support pins, wherein the drive disk is configured to mate with a cylindrical hole saw cutting blade;
- a spring-loaded drive collar disposed about the drive shaft, wherein the drive collar comprises an internal annular channel;
- and
- a plurality of drive latches each comprising a first end configured to floatingly engage with the internal annular channel, an elongate pivot hole configured to receive the latch support pins of the drive disk, and a second end configured to radially engage with the hole saw cutting blade;
- wherein axial movement of the drive collar causes the first end of the drive latch to move in an axial direction, the drive latch to simultaneously slide and pivot about the support pins, and the second end of the drive latch to move in a radial direction to engage and disengage with the hole saw cutting blade.
3 more elements
Dependencies are inferred from the claim text.