Appeal No. 2000-0230
Application No. 08/761,671
Independent claim 1 is reproduced as follows:
1. An altitude and vertical speed indicator for aircraft, the indicator
comprising:
first and second sensors for measuring an altitude and a vertical
speed of the aircraft, respectively, and for supplying signals representing the
altitude and the vertical speed;
processing means for processing the signals supplied by said first
and second sensors to produce processed signals; and
display means, comprising a display screen, for displaying on the
display screen an altitude indication and a vertical speed indication
representing the processed signals, the display means comprising:
altitude indication means for displaying on the display screen
the altitude indication; and
vertical speed indication means, in line with said altitude
indication means, for displaying on the display screen the vertical
speed indication;
said altitude indication means and said vertical speed
indication means being coupled such that the vertical speed
indication is at all times in line with a future altitude indication which
represents a future altitude corresponding to the vertical speed;
wherein:
said altitude indicator means comprises a graduated scale mobile
past a fixed marker;
said vertical speed indicator means comprises a pointer rotatable
about a point of intersection of a straight line segment through said fixed
marker and a straight line segment through said pointer and pointing
towards said mobile graduated scale, an angle defined by said fixed marker
and said pointer being representative of the vertical speed; and
2
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