Electromotive furniture drive for a piece of furniture, a method for monitoring a pulse-width ratio of an electromotive furniture drive, and a corresponding piece of furniture

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United States of America Patent

PATENT NO 9713387
APP PUB NO 20150048763A1
SERIAL NO

14381843

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The invention relates to an electromotive furniture drive (100) for adjusting a movable part (4, 5) of a piece of furniture (1) by means of an output element, comprising a) at least one adjusting drive (7, 8) with respectively at least one electric motor, a speed reducing mechanism which is coupled thereto and which ensures that the output element is drivenly coupled and can be linearly displaced and/or rotatably moved, and when said output element reaches a predetermined position, said output element actuates an end switch and/or reference switch and/or switching means, b) at least one control device (9) and c) at least one control unit (10), said control device (9) comprising a positioning device for the output element provided with a control block with a counter and a recording device for evaluating impulses of a counter EMK of the at least one electric motor. Said control device (9) comprises a digital potentiometer which emits as an output value, an electric value which is proportionate to the position of said output element. The control device comprises, in a further embodiment, a monitoring device. The invention also relates to a method for monitoring a pulse width ratio of an electromotive furniture drive and a piece of furniture (1).

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Patent Owner(s)

Patent OwnerAddress
DEWERTOKIN TECHNOLOGY GROUP CO LTDJIAXING CITY ZHEJIANG PROVINCE 314011

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hille, Armin Bielefeld, DE 33 239

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