Electricity: motive power systems – Automatic and/or with time-delay means – Movement – position – or limit-of-travel
Reexamination Certificate
2005-03-22
2005-03-22
Martin, David (Department: 2837)
Electricity: motive power systems
Automatic and/or with time-delay means
Movement, position, or limit-of-travel
C318S456000, C318S466000, C049S026000, C049S028000
Reexamination Certificate
active
06870339
ABSTRACT:
The invention relates to a simple, economical and reliable method for providing anti-jamming protection. According to said method, the excess force—the difference between the driving force and the friction force—is compared with a trigger threshold. To this end, the curve of the friction force of the current actuation process, which is dependent on the actuation path of the electrical drive unit, is compared to the curve of the friction force of at least one previous actuation process and the trigger threshold value is modified according to how the friction force curves correspond. The invention also relates to a method for providing anti-jamming protection for an electrical drive unit for window lifting drives.
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Kessler Erwin
Schulter Wolfgang
Colon Santana Eduardo
Conti Temic microelectronic GmbH
Fasse W. F.
Fasse W. G.
Martin David
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