Granted Patent B2

US 12,486,721 · App. 18/627,045 · Granted Dec 2, 2025

Inventors: Jonathan E. Schmitz (Wauwatosa, WI); Terry L. Timmons (Oconomowoc, WI); Karly M. Schober (Milwaukee, WI); Dane Laitinen (Wauwatosa, WI); Andrew Medeiros-Nicholson (Wauwatosa, WI); Paul W. Eiche (Oconomowoc, WI); Casey A. Ketterhagen (Hartland, WI); Sara Burch (Milwaukee, WI); Guo Qian Qin (Dongguan, CN)

Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION

E21B7/027B25H1/0042E21B3/02

Abstract

Claims (25)

1 . A drill assembly comprising:

a core drill; and

a stand upon which the core drill is mounted, the stand including

a base supportable upon a mounting surface;

a mast defining a longitudinal axis and extending upward from the base;

a carriage moveably coupled to the mast and configured to support the core drill thereon;

first and second legs pivotably coupled to the base between a deployed position, in which the legs extend away from the base, and a stowed position, the first and second legs being located on opposite sides of the base;

a biasing member that biases each of the legs towards the stowed position; and

a leg extension formed on a distal end of each of the legs, wherein the leg extension is pivotable between a deployed position, in which the leg extensions are oriented perpendicular to the respective legs, and a stowed position, in which the leg extensions are oriented coaxial with the respective legs.

2 . The drill assembly of claim 1 , wherein the first and second legs are pivotable relative to the base about respective pivot joints oriented parallel with the longitudinal axis of the mast.

3 . A drill stand comprising:

a base supportable upon a mounting surface;

a mast defining a longitudinal axis and extending upward from the base;

a carriage moveably coupled to the mast and configured to support a core drill thereon;

a spindle assembly for moveably adjusting the carriage along the mast;

a handle assembly for rotating the spindle assembly; and

a lock assembly that is operable to secure the carriage in a selected position on the mast, the lock assembly including

a first adjustment dial positioned on a first side of the carriage,

a second adjustment dial positioned on a second side of the carriage, and

a locking member operably coupled to the first and second adjustment dials to selectively secure the carriage on the mast.

4 . The drill stand of claim 3 , wherein the lock assembly further comprises an elongated shaft coupled to the first and second adjustment dials, the elongated shaft having an eccentric portion that engages with the locking member, and a biasing member that biases the locking member into engagement with the eccentric portion.

5 . The drill stand of claim 4 , wherein the locking member includes a recess that receives the eccentric portion of the shaft.

6 . The drill stand of claim 5 , wherein the locking member includes a first set of teeth that selectively engage with a second set of teeth formed on the mast.

7 . The drill stand of claim 5 , wherein the biasing member includes a pair of compression springs positioned on each side of the eccentric portion of the shaft.

8 . The drill stand of claim 7 , wherein the compression springs extend between the locking member and a cover fastened to the carriage.

Assignments (4)

Priority Claims (1)

Continuity (3)

References Cited (99)