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US 2012/0198951 A1Published application
Spindle drive
AssigneeSchaeffler Technologies AG & Co. KG
InventorRoland Schmidt
Life of this patent
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AssigneeSchaeffler Technologies AG & Co. KG
InventorRoland Schmidt
Estimating the term…
A spindle drive having a threaded spindle driveable in a rotational fashion, a carriage adjustable via the threaded spindle along a guide rail, and several guide carriages arranged in front and behind the carriage in the feed direction to support the spindle, with the guide carriages arranged in front of the carriage in an accumulating motion being pushed together successively by the carriage towards the spindle end, and with the guide carriages arranged behind the carriage being entrained by a coupling mechanism and moved into allocated support positions. Coupling elements are provided on the guide carriages and the carriage, that cooperate together and can be operated by switching elements fixed on the guide rail, by which the guide carriages arranged in front of the carriage are automatically coupled during the successive displacement motion, and by which the entrained guide carriages upon reaching their support position are automatically decoupled and fixed.
A spindle drive comprising a threaded spindle that can be rotationally driven, a carriage displaceable via the threaded spindle along a guide rail, as well as several guide carriages arranged in front and behind the carriage in a direction of a spindle axis to support the threaded spindle, with the guide carriages arranged in front of the carriage in a feed direction being pushed together successively by the carriage and being moved towards an end of the spindle and with the guide carriages arranged behind the carriage being entrained via a coupling mechanism and being moved into an allocated support position, coupling means are provided arranged on the guide carriages and the carriage and cooperating therewith, which are operable by switching means arranged fixed on the guide rail by which the guide carriages arranged in front of the carriage can be automatically coupled with a respectively rear approaching one of the carriage or guide carriages in a subsequent displacement motion and by which entrained ones of the guide carriages upon reaching their respective support positions are automatically decoupled and placed.
Dependencies are inferred from the claim text.