US 12,244,256 B2
Noise limited power tools and equipment
Edgar A. Dallas, Beaverton, OR (US); Erik Jensen, Portland, OR (US); Shaun Conley, Portland, OR (US); and Jonathan Ziring, Portland, OR (US)
Assigned to Oregon Tool, Inc., Portland, OR (US)
Filed by Oregon Tool, Inc., Portland, OR (US)
Filed on Apr. 17, 2023, as Appl. No. 18/135,532.
Application 18/135,532 is a continuation in part of application No. 16/610,874, granted, now 11,632,066, previously published as PCT/US2018/030743, filed on May 2, 2018.
Claims priority of provisional application 62/500,952, filed on May 3, 2017.
Prior Publication US 2023/0275535 A1, Aug. 31, 2023
Int. Cl. H02P 27/08 (2006.01); A01D 34/00 (2006.01); A01D 69/02 (2006.01); H02K 7/14 (2006.01)
CPC H02P 27/085 (2013.01) [A01D 34/006 (2013.01); A01D 69/02 (2013.01); H02K 7/14 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A method, comprising:
providing an electric implement configured 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 by setting the operating frequency to be different than a resonant frequency
of the electric implement; and
controlling an electric motor of the electric implement in accordance with the operating frequency.