Tool Bit Storage System

Patent metadata

Field	Value
Publication number	US-2020047327-A1
Application number	US-201916545860-A
Country	US
Kind code	A1
Filing date	Aug 20, 2019
Priority date	Aug 13, 2018
Publication date	Feb 13, 2020
Grant date	—

Abstract

A drill bit cooling system is provided. After drilling use, the drill tip of a drill bit reaches higher temperatures than a shank or flute of the drill bit. Compartments are provided that are sized in length and width (diameter) to accommodate the drill bit and a cover or back plate with an increased melting temperature facilitates the storage of hot drill tip. By using different components to construct the drill bit holder, a lightweight and versatile cooling system permits the drill bit to be rapidly interchanged on a power tool or drill, without melting through the storage device. This helps the operator interchange drill bits while working on a workpiece without waiting for each drill bit to cool prior to storing and replacing the drill bit.

First claim

What is claimed is:

1 . A cooling bit holder storage system, comprising:
a first compartment extending along a longitudinal first compartment axis, first compartment comprising:
a first opening;
a first end located opposite first opening along first compartment axis; and
a first material having a first melting temperature;
a second compartment extending along a longitudinal second compartment axis parallel to first compartment axis, second compartment comprising:
a second opening;
a second end opposite second opening on second compartment axis; and
a second material having a second melting temperature; and
a cover plate coupled to both first and second ends perpendicular to first and second compartment axes, cover plate comprising a third material having a third melting temperature that is higher than first and second compartment melting temperatures.

2 . The cooling bit holder storage system of claim 1 , further comprising a first length extending from first opening to first end of first compartment; and a second length extending from second opening to second end of second compartment; wherein second length is greater than first length.

3 . The cooling bit holder storage system of claim 1 , wherein cover plate comprises two semi-circular side portions with a first radius and a second radius, wherein the semi-circular side portions are coupled by a rectangular middle portion, and wherein first radius matches a radius of first end of first compartment and second radius matches a radius of second end of second compartment.

4 . The cooling bit holder storage system of claim 1 , wherein first compartment and second compartment are hollow cylinders with a first radius extending perpendicular from first compartment axis to an internal wall of first compartment and a second radius extending perpendicular from second compartment axis to an internal wall of second compartment; wherein second radius is greater than first radius.

5 . The cooling bit holder storage system of claim 1 , further comprising a slot extending through first compartment and second compartment perpendicular to first and second compartment axes, wherein the slot is adjacent to first and second ends, wherein cover plate is a flat cover plate extending through the slot.

6 . The cooling bit holder storage system of claim 1 , wherein cover plate couples to an insert that extends into first and second compartments, wherein cover plate covers first and second ends and the insert extends into the internal walls of first compartment and second compartment, wherein the insert has a higher melting temperature than first or second compartment melting temperatures.

7 . The cooling bit holder storage system of claim 1 , wherein first compartment and second compartment are hollow cylinders and cover plate extends perpendicular to first and second compartment axes in a radial direction, wherein a first radius of cover plate matches a radius of the cylindrical first compartment at first end and a second radius of cover plate matches a radius of the cylindrical second compartment at second end.

8 . The cooling bit holder storage system of claim 1 , further comprising connectors that couple first compartment to second compartment, the connectors comprising a bore that extends through the connector in a direction orthogonal to first and second compartment axes and between first compartment and second compartment.

9 . The cooling bit holder storage system of claim 8 , wherein cover plate couples to the connectors with a fitting that passes through the bore between first compartment and second compartment.

10 . The cooling bit holder storage system of claim 8 , wherein cover plate comprises two bent portions that extend parallel to first and second longitudinal axes, wherein the two bent portions couple to the bore between first compartment and second compartment.

11 . A storage bit holder for cooling drill bits, comprising:
a first compartment comprising:
a first material extending along a first longitudinal axis;
a first opening opposite a first end; and
a first radius orthogonal to first longitudinal axis;
a second compartment comprising:
a second material extending along a second longitudinal axis;
a second opening opposite a second end; and
a second radius orthogonal to second longitudinal axis; and
a cover plate comprising a third material and coupled to a bore perpendicular to first and second longitudinal axes, cover plate extending over first end of first compartment and second end of second compartment, wherein the third material is different from first material and second material, and wherein first radius is less than second radius.

12 . The storage bit holder of claim 11 , further comprising a first length between first opening and first end along first longitudinal axis and a second length between second opening and second end along second longitudinal axis, and wherein second length is greater than first length.

13 . The storage bit holder of claim 11 , further comprising rings coupled to at least one of first compartment or second compartment, wherein the rings protrude beyond an outer surface of at least one of first or second compartments and define a flat attachment surface.

14 . The storage bit holder of claim 11 , further comprising an insert coupled to cover plate that extends into first compartment and second compartment, the insert comprising a fourth material having a higher melting temperature than first or second compartments, the insert thermally insulating first and second ends and sides of first compartment and second compartment.

15 . The storage bit holder of claim 11 , wherein first material is the same as second material.

16 . The storage bit holder of claim 15 , wherein first compartment and second compartment are a single integral component.

17 . A cooling system for a drill bit, comprising:
a drill bit having a temperature at a drilling tip of the drill bit that is greater than a temperature of a shank of the drill bit; a first compartment comprising:
a first material with a first melting temperature extending along a first longitudinal axis;
a first opening opposite a first end; and
a first radius orthogonal to first axis;
a second compartment comprising:
a second material with a second melting temperature extending along a second longitudinal axis parallel to first axis;
a second opening opposite a second end; and
a second radius orthogonal to second axis; and
a cover plate comprising a third material with a third melting temperature; wherein the temperature of the drilling tip of the drill bit is higher than first melting temperature of first compartment and higher than second melting temperature of second compartment and is less than the third melting temperature of cover plate.

18 . The cooling system for a drill bit of claim 17 , further comprising an insert coupled to cover plate, the insert comprising a fourth material with a fourth melting temperature that is higher than the third melting temperature of cover plate; the insert lining cover plate and interior walls of first compartment and second compartment.

19 . The cooling system for a drill bit of claim 17 , wherein first compartment and second compartment are cylindrical with a first radius of first compartment extending from first axis to an interior wall of first compartment, and a second radius of second compartment extending from second axis to an interior wall of second compartment, wherein second radius is greater th

Assignees

• Milwaukee Electric Tool Corp

Inventors

• Richman Zachary W
• Squiers Grant T
• Eisenhardt Scott D

Classifications

• B25H3/003 Primary

  Holders for drill bits or the like · CPC title