Invention Grant
- Patent Title: Adaptive transmission mechanism
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Application No.: US15123926Application Date: 2015-03-06
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Publication No.: US09889548B2Publication Date: 2018-02-13
- Inventor: Christian Sattler
- Applicant: Hilti Aktiengesellschaft
- Applicant Address: LI Schaan
- Assignee: Hilti Aktiengesellschaft
- Current Assignee: Hilti Aktiengesellschaft
- Current Assignee Address: LI Schaan
- Agency: Davidson, Davidson & Kappel, LLC
- Priority: EP14158227 20140307
- International Application: PCT/EP2015/054699 WO 20150306
- International Announcement: WO2015/132373 WO 20150911
- Main IPC: B25F5/00
- IPC: B25F5/00 ; B23B47/26 ; B23B49/00 ; B28D1/04 ; G05B19/404 ; B25B21/00

Abstract:
A method to control a power tool includes the following steps: ascertaining a first rotational speed of the transmission in a first gear; ascertaining a first rotational speed of the motor when the transmission has been put into a first gear; ascertaining the selection of a first gear on the basis of the ratio of the rotational speed of the transmission and the rotational speed of the motor on the basis of a look-up table; selecting the no-load state; ascertaining the selected no-load state on the basis of the ratio of the rotational speed of the transmission and the rotational speed of the motor on the basis of a look-up table; adapting the rotational speed of the motor to a second gear on the basis of a ratio of the rotational speed of the transmission and the rotational speed of the motor on the basis of a look-up table; and selecting a second gear.
Public/Granted literature
- US20170014985A1 ADAPTIVE TRANSMISSION MECHANISM Public/Granted day:2017-01-19
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