Invention Grant
- Patent Title: Door drive having two motors
- Patent Title (中): 门驱动器有两个电机
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Application No.: US12716630Application Date: 2010-03-03
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Publication No.: US08458956B2Publication Date: 2013-06-11
- Inventor: Michael Hoermann
- Applicant: Michael Hoermann
- Applicant Address: DE Marienfeld
- Assignee: Marantec Antriebs—und Steuerungstechnik GmbH & Co. KG
- Current Assignee: Marantec Antriebs—und Steuerungstechnik GmbH & Co. KG
- Current Assignee Address: DE Marienfeld
- Agency: Dilworth & Barrese, LLP.
- Priority: DE202009003004U 20090304; DE202009006587U 20090506
- Main IPC: E05F15/10
- IPC: E05F15/10 ; G05D3/12

Abstract:
The present invention relates to an apparatus for a door drive, in particular for roller doors, sectional doors or the like, having a door movement element, in particular a door shaft, for the opening and closing of a door and a connection means arranged at the door movement element. In accordance with the invention, the door drive includes at least two electric motors of which one is indirectly/directly fixedly connected to the connection means arranged at the door movement element and all further electric motors are arranged radially movably around the door movement element and are connected thereto via the arranged connection means.
Public/Granted literature
- US20100223854A1 Door Drive Having Two Motors Public/Granted day:2010-09-09
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