Electricity: measuring and testing – Magnetic – Stress in material measurement
Reexamination Certificate
2011-08-09
2011-08-09
Nguyen, Ha Tran T (Department: 2858)
Electricity: measuring and testing
Magnetic
Stress in material measurement
C188S00111E, C188S00111E
Reexamination Certificate
active
07994779
ABSTRACT:
Presented is a method for continuously determining the tensile force F in a cable of a parking brake that includes transmitting the tensile force F to a cable grommet coupled to a first end of an expandable intermediate part that includes a magnet and/or a magnetic sensor. The first end of the expandable intermediate part faces away from a drive spindle coupled to a second end of the expandable intermediate part. The method further includes changing the length of the expandable intermediate part in the direction of its longitudinal axis in response to the transmitted tensile force F, moving the magnet and the magnetic sensor relative to each other in response to the change in length, changing the signal voltage of the magnetic sensor in response to the relative movement between the magnet and the magnetic sensor, and determining the tensile force F from the respective signal voltage.
REFERENCES:
patent: 6194856 (2001-02-01), Kobayashi et al.
patent: 6254267 (2001-07-01), Arnaud
patent: 10 2004 025 361 (2005-03-01), None
patent: WO 98/56633 (1998-12-01), None
Ante Johannes
Ehret Juergen
Cohen Pontani Lieberman & Pavane LLP
Continental Automotive GmbH
Nguyen Ha Tran T
Nguyen Trung Q
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