Linear drive device with two motors
AssigneeLars International S.A., Luxembourg
InventorHans Fickler
Life of this patent
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Abstract
The linear drive device operates with two motors which are mounted on the outer ends of two housing parts which are locked against rotation and can be telescopically moved into each other. A motor drives a nut over a driving sleeve. The other motor drives a threaded rod. By means of this design, a compact drive device is procured in the case of which all mechanical parts are located inside of the housing.
Claims21
A linear drive device with a threaded rod and a coacting nut, comprising a cylindrical housing, a first drive motor mounted at one end of the housing, a rotatably mounted threaded rod connected at one end thereof to the first drive motor drive shaft, a driving nut disposed on the threaded rod and within the cylindrical housing, a cylindrical drive tube disposed within the housing and connected to the drive nut which is coaxially mounted with respect to the threaded rod, and a driving motor connected to one end of the driving tube for imparting rotational movement thereto whereby the relative movement of the threaded rod transmits a driving axial movement thereto.
Dependencies are inferred from the claim text.