Spring devices – Coil – Including end thrust member
Reexamination Certificate
2005-02-22
2005-02-22
Siconolfi, Robert A. (Department: 3683)
Spring devices
Coil
Including end thrust member
C267S221000, C188S299100
Reexamination Certificate
active
06857625
ABSTRACT:
The invention relates to a spring carrier for the chassis of a motor vehicle. Said carrier is used to support a coil spring (1) which is braced between two spring plates (2, 3). At least one of said spring plates (2) can be axially adjusted by means of a drive unit comprising a gearbox and an electric motor. Preferably, at least one part of the piston rod (6) and/or the shock-absorber tube (5) of a shock-absorber or a suspension strut is arranged inside the coil spring (1). The aim of the invention is to develop one such spring carrier in such a way that the distance between the upper spring end and the vehicle body can be kept small in a cost-effective manner. To this end, the electric motor is embodied in the form of a ring motor having an external stator (15) and an internal rotor (16) which comprises a displacement nut on its inner side, said displacement nut axially displacing a spring plate carrier (21) connected to the spring plate (2) and externally embodied as a threaded spindle.
REFERENCES:
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patent: 3049359 (1962-08-01), Geyer
patent: 3603575 (1971-09-01), Arlasky et al.
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patent: 5060959 (1991-10-01), Davis et al.
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patent: 5306031 (1994-04-01), Quinn et al.
patent: 5553836 (1996-09-01), Ericson
patent: 5678847 (1997-10-01), Izawa et al.
Ellmann Siegfried
Löser Friedrich
Fogiel Max
ThyssenKrupp Automotive AG
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