User Manual

5,666,408
3
FIG. 12 illustrates the pin connection another embodi
ment of the one-to-two telephone cable coupler.
FIG. 13 illustrates the pin connection in another embodi
ment of the one-to-two telephone extension cable.
DETAILED DESCRIPTION OF THE
INVENTION
FIG. 1(a) shows the side view of the one-to-one telephone
jack adapter, according to the present invention. which alters
the pins con?guration in a four-pin telephone jack. As shown
in FIG. 1(a), numeral 2 denotes a plug for plugging into a
regular telephone jack comprising four exposed pins there
within. On the plug body, a ?exible latch 3 is used to secure
the plug to the telephone jack; numeral 4 denotes the four
exposed pins seated on one side of plug opposite to the latch
3 for providing electrical contact between the adapter and
the telephone jack. Numeral 20 denotes a receptacle which
has an opening 22 for receiving a regular telephone-cable
plug; numeral 24 denotes four exposed pins seated inside the
opening 22 for providing electrical contact between the
adapter and the telephone cable plug. The plug 2 and the
receptacle 20 is connected by a connecting body 10. The
connecting body 10 can be short or long, solid or ?exible.
The connecting body 10 comprises at least four wires (not
shown) for electrically connecting the pins 4 on the plug 2
and the pins 24 in the receptacle 24. The interconnection
between the pins is illustrated in FIG. 2. FIG. 1(b) illustrates
the rear view of the one-to-one telephone jack adapter
showing the opening 22 and the pins 24 of the receptacle 20.
FIG. 2 illustrates the pin connection in the one-to-one
telephone jack adapter, according to the present invention. In
FIG. 2, the positions of the pins 4 are labeled (a,b,c.d),
matching the four pin positions of a regular 4-pin telephone
jack. The positions of pins 24 are labeled (e.f,g.h), matching
the four pin positions of a regular 4-pin telephone cable
plug. As shown. the two outer pins (ad) of the plug are
electrically connected to the two inner pins (f,g) of the
receptacle; the two inner pins (b,c) of the plug are electri
cally connected to the two outer pins (e,h) of the receptacle.
When the adapter is plugged into a phone jack which carries
line 1 signals on its two inner pins and line 2 on its two outer
pins. the inner pins (f,g) of the receptacle will carry line 2
signals while the outer pins (e,h) carry line 1 signals. Thus,
when a regular one-line telephone set is plugged into a
phone jack through the adapter. the phone set is connected
to line 2.
FIG. 3 illustrates the pin connection in the one-to-one
telephone cable coupler, according to the present invention,
which comprises two receptacles for receiving regular tele
phone cable plugs. As shown, the four pins 34 in the opening
32 on the receptacle 30 are labeled (a,b,c,d) while the four
pins 24 in the opening 22 on the receptacle 20 are labeled
(e.f,g.h). The four pins on each receptacle match the four pin
positions of a regular 4-pin telephone cable plug. Similar to
the adapter illustrated in FIG. 2, outer pins (a,d) are con
nected to inner pins (f,g) while inner pins (c,d) are connected
to outer pins (e,h).
FIG. 4 illustrates the pin connection in the one-to-two
telephone cable coupler, according the present invention,
which comprises three receptacles each-for receiving a
regular telephone cable plug. As shown, the four pins 34 in
the opening 32 on the receptacle 30 are labeled (a.b.c.d), the
four pins 44 in the opening 42 on the receptacle 40 are
labeled (m,o.p,q). and the four pins 54in the opening 52 on
receptacle 50 are labeled (e,f,g.h). The receptacles 40 and 50
can be constructed on a solid body as shown in FIG. 4 or
they be connected by a connecting body. The pin connection
between receptacle 30 and receptacle 40 is straight-through
such that outer pins (a,d) are electrically connected to outer
15
20
25
35
50
55
65
4
pins (rn.q) while inner pins (b,c) are electrically connected
to inner pins (o,p). The pin connection between receptacles
30 and 50 are the same as that illustrated in FIG. 3.
FIG. 5 illustrates the pin connection in the one-to-two
telephone jack adapter, according to the present invention.
which comprises a plug for plugging into a regular telephone
jack, and two receptacles for receiving regular telephone
cable plugs. As shown in FIG. 5 the coupler has one plug 2
with four pins labeled by (a,b,c,d). The receptacles 40, 50in
FIG. 5 are identical to the receptacles 40 and 50 in FIG. 4.
The interconnection of pins are identical to that illustrated in
FIG. 4.
FIG. 6 illustrates the pin connection in the one-to-one
telephone extension cable, according to the present
invention, which is functionally similar to the one-to-one
adapter of FIG. 1 except that the connecting body 10 on the
one-to-one adapter is replaced by a telephone cable 11
comprising four wires. The pin connection is identical to that
in the one-to-one adapter as shown in FIG. 2.
FIG. 7 illustrates the pin connection in the one-to-two
telephone extension cable, according to the present
invention, which is functionally similar to the one-to-two
adapter of FIG. 5 except that the connecting body 10 on the
one-to-one adapter is replaced by a telephone cable 11
comprising four wires. The pin connection is identical to that
in the one-to-two adapter as shown in FIG. 5.
FIG. 8 illustrates the pin connection in another embodi
ment of the one-to-one adapter wherein the plug and the
receptacle each has only two pins for carrying the signals of
one telephone line. As shown, the plug 7 comprises two pins
5. labeled by (a,d) which match the two outer pin positions
of a regular 4-pin telephone jack. The receptacle 21 com
prises two pins 25 in the opening 23. The pins 25, labeled by
(f,g), match the two inner pin positions of a regular tele
phone cable plug. Numeral 12 denotes a connecting body
comprising two wires for electrically connecting the pins 5
to the pins 25.
FIG. 9 illustrates the pin connection in another embodi
ment of the one-to-one coupler wherein each of receptacles
has only two pins for carrying the signals of one telephone
line. The interconnection of pins is identical to that of the
one-to-one adapter of FIG. 8. As shown, the pins 35 in the
opening 33 of receptacle 31 are electrically connected to the
pins 25 in the receptacle 21.
FIG. 10 illustrates the pin connection in another embodi
ment of the one-to-one extension cable wherein only two
pins are used to carry signals of one telephone line. As
shown in FIG. 10, the extension cable is similar the one-to
one adapter of FIG. 8 except that the connecting body 12 of
the adapter is replaced by a telephone cable 13 comprising
two wires. The pin connection is identical to that illustrated
in FIG. 8.
FIG. 11 illustrates the pin connection in another embodi
ment of the one-to-two adapter wherein each of the recep
tacles has only two pins while the plug has four pins. As
shown in FIG. 11, the four pins 4 on plug 2 are labeled
(a.b,c,d), matching the four pin positions of a regular tele
phone jack. The two pins 45 in the opening 43 of receptacle
41 are connected to the inner pins (b,c) while the two pins
55 in the opening 53 of receptacle 51 are connected to the
outer pins (a,d). The pins in receptacles 41 and 51 match the
two inner pin positions of a regular telephone cable plug.
FIG. 12 illustrates the pin connection in another embodi
ment of the one-to-two coupler wherein two of the recep
tacles each has only two pins while the third receptacle has
four pins. As shown in FIG. 12. the one-to-two coupler is
similar to the one-to-two adapter of FIG. 11 except that the
plug 2 is replaced by a receptacle 30. The pin connection in
the one-to-two coupler of FIG. 12 is identical to that in the
one-to-two adapter of FIG. 11.