Hand-held knockout punch driver

Patent metadata

Field	Value
Publication number	US-2016303755-A1
Application number	US-201615188022-A
Country	US
Kind code	A1
Filing date	Jun 21, 2016
Priority date	Apr 11, 2011
Publication date	Oct 20, 2016
Grant date	—

Abstract

A hand-held knockout punch driver includes a housing, a motor positioned within the housing, and a head unit removably coupled to the housing. The head unit includes a draw rod to which at least one of a punch or a die is attachable.

First claim

What is claimed is:

1 . A hand-held knockout punch driver comprising:
a housing; a motor positioned within the housing; and a head unit removably coupled to the housing, the head unit including a draw rod to which at least one of a punch or a die is attachable.

2 . The hand-held knockout punch driver of claim 1 , further comprising a quick-release mechanism for removably coupling the head unit to the housing.

3 . The hand-held knockout punch driver of claim 2 , wherein the quick-release mechanism includes a collar coupled to one of the housing or the head unit.

4 . The hand-held knockout punch driver of claim 3 , wherein the collar is movable between a first position in which the head unit is locked to the housing, and a second position in which the head unit is unlocked and removable from the housing.

5 . The hand-held knockout punch driver of claim 4 , wherein the head unit is adjustable relative to the housing in at least one of the first position or the second position of the collar.

6 . The hand-held knockout punch driver of claim 5 , further comprising a drive assembly positioned between the motor and the head unit, wherein the drive assembly includes an output member engageable with the head unit.

7 . The hand-held knockout punch driver of claim 6 , wherein the head unit, in at least one of the first position or the second position of the collar, is rotatable relative to the housing about a longitudinal axis of the output member.

8 . The hand-held knockout punch driver of claim 2 , wherein the quick-release mechanism includes
a plurality of radially inward-extending locking members on one of the housing or the head unit, and a plurality of radially outward-extending locking members on the other of the housing or the head unit engageable with the radially inward-extending locking members to lock the head unit to the housing.

9 . The hand-held knockout punch driver of claim 8 , wherein adjacent radially outward-extending locking members define a recess therebetween in which at least one of the radially inward-extending locking members is received to lock the head unit to the housing.

10 . The hand-held knockout punch driver of claim 1 , further comprising a drive assembly positioned between the motor and the head unit, wherein the drive assembly includes an output member engageable with the head unit.

11 . The hand-held knockout punch driver of claim 10 , wherein the output member transfers energy from the drive assembly to the head unit to impart axial movement to the draw rod.

12 . The hand-held knockout punch driver of claim 11 , wherein the output member is cylindrical.

13 . The hand-held knockout punch driver of claim 11 , wherein the head unit includes a body in which the output member is at least partially received when the head unit is coupled to the housing.

14 . The hand-held knockout punch driver of claim 13 , wherein the head unit is rotatable relative to the housing about a longitudinal axis of the output member to adjust a position of the draw rod relative to the housing.

15 . The hand-held knockout punch driver of claim 14 , wherein the draw rod is non-coaxial with the longitudinal axis.

16 . The hand-held knockout punch driver of claim 15 , wherein the draw rod is transverse to the longitudinal axis.

17 . The hand-held knockout punch driver of claim 1 , further comprising a power source carried onboard the housing for supplying power to the motor.

18 . The hand-held knockout punch driver of claim 17 , wherein the power source is a rechargeable battery.

19 . The hand-held knockout punch driver of claim 18 , wherein the motor is a direct current motor, and wherein the rechargeable battery has a nominal voltage of at least about 18 volts.

20 . The hand-held knockout punch driver of claim 1 , wherein the head unit includes a contact surface against which one of the punch or the die is abuttable, and wherein the contact surface surrounds the draw rod.

Assignees

• Milwaukee Electric Tool Corp

Inventors

• Myrhum Jr James O
• Thorson Troy C
• Chung Koon For

Classifications

• B21D28/343

  Draw punches · CPC title

• B26D5/086

  Electric, magnetic, piezoelectric, electro-magnetic means · CPC title

• B26F1/34 Primary

  power actuated (details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F5/00) · CPC title

• B26F1/36

  Punching or perforating pliers · CPC title

• B26F1/38

  Cutting-out; Stamping-out · CPC title