Patent · US Active

Hand-held knockout punch driver

US9393711B2 · kind B2 · utility

12Cited by

70References

17Claims

0Family size

Assignee

Milwaukee Electric Tool Corporation · US

Inventors

James O. Myrhum, Jr. · West Bend, US
Troy C. Thorson · Cedarburg, US
Koon For Chung · Sai Kung, CN

Key dates

Filing date	Apr 11, 2012
Grant date	Jul 19, 2016
Priority date	—
Expiry date	Feb 2, 2035

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB26F1/38
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A hand-held knockout punch driver for use with a punch and a die. The hand-held knockout punch driver having a body with a handle portion and a contact surface, a motor positioned within the body, a draw stud moveable with respect to the body, and a magnetic coupling member configured to releaseably couple the die to the contact surface of the body.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.