Actuating drive with operator control device, and associated method for operator control
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United States of America Patent
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Sep 22, 2020
Grant Date -
Nov 15, 2018
app pub date -
May 9, 2018
filing date -
May 9, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
To improve the operator control capability of an actuating drive, switches are dispensed with and, instead, at least two rotary elements for rotational operator control are provided, arranged concentrically with respect to one another to be operatable using both hands and, in the process, are rotatable individually and independently of one another, preferably about a common axis of rotation. Rotational adjustment movements of the two rotary elements are transmitted by a magnetic coupling through a housing section, which is designed without apertures, of the actuating drive into an interior space of said actuating drive, such that, for reading out the magnetic fields, use can be made of conventional Hall sensors, and the housing of the actuating drive can be designed to be explosion-proof. In the event of failure of the rotary elements, the magnetic fields required for operator control are transmitted into the interior space using a magnetic pin for high operational reliability under all circumstances.
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