Shearing tool

Patent metadata

Field	Value
Publication number	US-2017223902-A1
Application number	US-201715493780-A
Country	US
Kind code	A1
Filing date	Apr 21, 2017
Priority date	Oct 28, 2014
Publication date	Aug 10, 2017
Grant date	—

Abstract

A method for operating a shearing tool that includes: operating a first switch to control a drive unit to drive a blade of a blade set; and operating a second switch to cause the drive unit to operate in an anti-binding mode in which a direction of an input to the drive unit is alternated at least twice. A shearing tool is also provided.

First claim

1 . A method for operating a shearing tool comprising:
providing a shearing tool with a housing with a blade set having first and second blades, a motor drivingly coupled to the blade set so that at least one of the first and second blades move in reciprocal motion, the motor having an output shaft that is rotatable in a first rotary direction and a second rotary direction that is opposite the first rotary direction, a first switch positioned on the housing and a second switch positioned in close proximity to the first switch so that both switches are operable using a single hand, and a controller configured to operate the motor in response to a state of the first switch and the second switch; actuating the first switch to rotate the motor in the first rotary direction; and actuating the second switch, while the first switch is simultaneously actuated, to cause the motor to enter an anti-bind mode where the motor alternatively rotates in the first and second rotary directions.

2 . The method of claim 1 , further comprising the step of releasing the second switch, whereupon the motor exits the anti-bind mode.

3 . The method of claim 1 , further comprising the step of releasing the second switch, whereupon the motor continues in anti-bind mode and exits anti-bind mode upon a predetermined termination event.

4 . The method of claim 3 , wherein the predetermined termination event is a predetermined length of time.

5 . The method of claim 3 , wherein the predetermined termination event is where the rotary direction of the motor is alternated a predetermined quantity of discrete times.

6 . A method for operating a shearing tool comprising:
operating a first switch to control a drive unit to drive a blade of a blade set; and operating a second switch to cause the drive unit to operate in an anti-binding mode in which a direction of an input to the drive unit is alternated at least twice.

7 . The method of claim 6 , wherein operation of the drive unit in the anti-binding mode is terminated after the occurrence of one of a plurality of predetermined termination events.

8 . The method of claim 7 , wherein the plurality of predetermined termination events comprises completion of an anti-binding control routine.

9 . The method of claim 8 , wherein completion of the anti-binding control routine occurs when the drive unit has been operated in the anti-binding mode for a predetermined length of time.

10 . The method of claim 8 , wherein completion of the anti-binding control routine occurs when the direction in which the blade is moved is alternated a predetermined quantity of discrete times.

11 . The method of claim 7 , wherein the plurality of predetermined termination events comprises a change in a state of the first switch.

Assignees

• Black & Decker Inc

Inventors

• Sergyeyenko Oleksiy P
• Ng Wong Kun
• Dyer Kelly E
• Wu Robert

Classifications

• A01G3/053 Primary

  motor-driven · CPC title