Appeal No. 97-1400
Application 08/394,409
of the drawings is labelled "Prior Art" and is described on
page 4 of the specification as including a lower section (Z)
which projects below the lower face of the circuit board and has
sharp corners, as at (SS), which can act as antennas for high
frequency signals on the order of 100 MHZ or higher. It is said
that this construction can result in undesirable "crosstalk"
between adjacent contacts, or allow the sharp edges to radiate
signals to adjacent circuitry and pick up stray signals. To
overcome these problems with the prior art electrical contacts,
appellant has provided an electrical contact with the particular
configuration seen in Figures 2 through 6 of the application
drawings. Of special importance to appellant is the rounded
configuration of the lower portion (30) of the contact as seen in
front elevation view Figure 5 and side elevation view Figure 6 of
the drawings and the relatively small dimension (N) between the
bottom of the slot (44) and the extreme lower end (32) of the
compliant section. As noted on page 10 of the specification,
the invention provides an electrical contact
with a large retention force, which minimizes
the emission and reception of high frequency
signals when installed in circuit board
holes, especially those of the most common
sizes. Emission and reception resulting in
crosstalk, is minimized by rounding the lower
surface of the contact, and by constructing
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Last modified: November 3, 2007