Patent · US Active

Multi-battery pack for power tools

US9673738B2 · kind B2 · utility

5Cited by

55References

21Claims

0Family size

Assignee

Techtronic Power Tools Technology Limited · VG

Inventors

Stuart Miller · Clayton, US
James Patton · Humboldt, US
G. Michael Hornick · Anderson, US
Michael Buckner · Central, US
Nicolas J. Hanks · Anderson, US
Frederick Bryan · Greenville, US

Key dates

Filing date	May 15, 2015
Grant date	Jun 6, 2017
Priority date	—
Expiry date	May 15, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A power tool including a motor, a first battery pack, a second battery pack, a first switching element coupled between the first battery pack and the motor, a second switching element coupled between the second battery pack and the motor, and controller coupled to the first switching element and the second switching element. The controller includes a first pulse-width modulation (PWM) output coupled to the first switching element and a first PWM signal to selectively close the first switching element. The controller further includes a second PWM output coupled to the second switching element and a second PWM signal to selectively close the second switching element.

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