Blount, Inc.

Oregon Tool, Inc.

Erik Jensen

Jonathan Ziring

Edgar A Dallas

Shaun Conley

Tom Murray

A method includes operating an electric implement to move or cut material in an outdoor environment, wherein operating the electric implement creates acoustic sound and managing the acoustic sound by selecting an operating frequency for the electric implement and controlling an electric motor of the electric implement in accordance with the operating frequency.

Noise limited power tools and equipment

Disclosed herein is a power tool that includes a direct current power source, motor, and motor controller. In some embodiments, the power source comprises a battery pack configured to supply current at a nominal voltage in excess of 100 VDC. Embodiments of the tool are configured to operate at a high power at least comparable to tools operating at lower voltages, and to produce noise levels in operation that are less than 65 decibels.

Noise limited power tool

Blower

String trimmer body

String trimmer

Growing community of inventors

Portland, OR, United States of America

Erik Jensen