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US 8,052,359 B2Granted
Countersink assembly
AssigneeWoodworker's Supply, Inc.
InventorsJohn Wirth, Jr., Jay L. Sanger, Paul Brutsman, Mark K. McCool
Life of this patent
Estimating the term…
Abstract
A countersink assembly including a countersink sleeve body with a distal cutting edge, a longitudinal bore to receive and secured to a drill bit, and a flute extending from the distal cutting edge. A depth stop collar having a longitudinal bore is disposed on and secured to the countersink sleeve body. In an example embodiment, the longitudinal bore of the depth stop collar includes at least one passage for chip egress. In addition or in the alternative, the flute includes a flat surface and a part cylindrical surface extending from the distal cutting edge along the length of the flute at an angle to the longitudinal bore of the countersink sleeve body so as to present a slight down-cut spiral.
Claims20
A countersink assembly comprising:
- a countersink sleeve body with a distal cutting edge, a longitudinal bore through the countersink sleeve body to receive a drill bit, at least one flute extending from the distal cutting edge along at least a part of an outer surface thereof, and a mechanism for selectively securing the countersink sleeve body to a drill bit disposed in said longitudinal bore;
- and
- a depth stop collar having a longitudinal bore to receive and be slidable along the countersink sleeve body, and a mechanism for selectively securing the depth stop collar to said countersink sleeve body disposed therein,
- wherein at least one of the longitudinal bore of the depth stop collar and the flute is configured such as to allow chip egress at least one of 1) radially through the depth stop collar and/or 2) axially between the at least one flute and the depth stop collar toward a proximal end of the assembly, and
- further including at least one longitudinally extending flat defined on an outer circumferential surface of said countersink sleeve body for engaging said mechanism for selectively securing the depth stop collar to said sleeve.
2 more elements
A countersink assembly comprising:
- a countersink sleeve body with a distal cutting edge, a longitudinal bore through the countersink sleeve body to receive a drill bit, at least one flute extending from the distal cutting edge along at least a part of an outer surface thereof, and a mechanism for selectively securing the countersink sleeve body to a drill bit disposed in said longitudinal bore;
- and
- a depth stop collar having a longitudinal bore to receive and be slidable along the countersink sleeve body, and a mechanism for selectively securing the depth stop collar to said countersink sleeve body disposed therein,
- wherein at least one of the longitudinal bore of the depth stop collar and the flute is configured such as to allow chip egress at least one of 1) radially through the depth stop collar and/or 2) axially between the at least one flute and the depth stop collar toward a proximal end of the assembly, and
- wherein the longitudinal bore of the depth stop collar has a non-circular cross-section so as to include at least one radial recess extending radially outward from a remainder of the longitudinal bore, said recess defining an axial passage having a width generally corresponding to a width of said flute of the countersink sleeve body.
2 more elements
A countersink assembly comprising:
- a countersink sleeve body with a distal cutting edge, a longitudinal bore through the countersink sleeve body to receive a drill bit, at least one flute extending from the distal cutting edge along at least a part of an outer surface thereof, and a mechanism for selectively securing the countersink sleeve body to a drill bit disposed in said longitudinal bore;
- and
- a depth stop collar having a longitudinal bore to receive and be slidable along the countersink sleeve body, and a mechanism for selectively securing the depth stop collar to said countersink sleeve body disposed therein,
- wherein at least one of the longitudinal bore of the depth stop collar and the flute is configured such as to allow chip egress at least one of 1) radially through the depth stop collar and/or 2) axially between the at least one flute and the depth stop collar toward a proximal end of the assembly, and
- wherein each flute extends sufficiently beyond an operational range of the depth stop collar so as to allow chip egress therethrough past the depth stop collar.
2 more elements
A depth stop collar comprising:
- a cylindrical sleeve body having an annular end face and an aperture defined axially therethrough defining a longitudinal bore adapted to receive a countersink sleeve body, and
- a cap mounted to said cylindrical sleeve body so as to cover at least a portion of said end face and so as to be rotatable with respect to said cylindrical sleeve body about an axis of rotation of the countersink sleeve body, said cap being formed from a polymer having a lower coefficient of friction than a material of said cylindrical sleeve body,
- said depth stop collar including at least one cutout for defining a radial opening that communicates the longitudinal bore thereof to a radial outside thereof so as to allow chip egress radially through a side of the depth stop collar.
Dependencies are inferred from the claim text.