Appeal No. 96-0949
Application 08/236,091
and 7 of the examiner's answer indicate that the examiner has
withdrawn the rejection as to claims 22 through 25 and 27
through 29, only claims 21, 26 and 30 remain on appeal for
decision.
Representative claim 26 is reproduced below:
26. In an operator controlled wire guided materials
handling vehicle including means for guiding the vehicle along
a predetermined path defined by a buried wire and means for
moving said vehicle, the improvement including:
at least one magnet sensor mounted on said vehicle for
detecting a magnetic field emanating from a buried magnet,
which indicates a specific location along the path of the
vehicle;
circuit means for providing an analog signal representing
the strength of the magnetic field detected by said magnet
sensor as the vehicle moves along said path;
threshold detecting means for providing a threshold
output signal when the analog output of said magnet sensor is
above a predetermined magnitude;
means responsive to said threshold output signal for
detecting and holding a peak analog output of said magnet
sensor during the time a threshold output signal is present;
means for comparing said peak analog output to a second
predetermined value; and
means for indicating a first fault condition when said
peak analog output is below said second predetermined value.
The following references are relied on by the examiner:
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Last modified: November 3, 2007