US5402015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cable connection between a PC and a sewing machine
Assignee: GM Pfaff AG
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Filing: 1992-10-27
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Granted: 1995-03-28
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Expires: 2012-10-27
Abstract
Abstract A cable connection between a PC and a sewing machine for transmitting data in the form of different voltage levels, wherein the cable connection for connection to the PC has an RS 232 C port and the sewing machine has a TTL port. A level converter is integrated in the cable connection, preferably in the connection jack to the RS 232 C port. The level converter has a switching transistor controllable by the sending pole of the TTL port and a switching transistor controllable by the sending pole of the 232 port for connecting the corresponding receiving pole to a voltage potential which it is able to receive.
Inventors
- 👤 Joachim Hammermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:44
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/042; G05B19/0423; G06; G06F; G06F13/00; G06F13/38; G06F13/40; G06F13/4063; G06F13/409; G05B2219/00; G05B2219/20; G05B2219/21; G05B2219/21098; G05B2219/21134; G05B2219/25; G05B2219/25171
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
171 words
A cable for connection between a personal computer and a sewing machine for transmitting data in the form of different voltage levels, comprising: a personal computer cable connection having an RS 232 C connector for connection to a sending pole, a receiving pole and a ground of a personal computer RS 232 C port; a sewing machine connection having a TTL port connector for connection with a sending pole, a receiving pole, ground and a power pin of a sewing machine TTL port; a level converter integrated in said cable, said level converter including first switching transistor activated by said sending pole of said TTL port for switching a connection of said receiving pole of said RS232 connector between said TTL power pin and a voltage from a capacitor charged by said RS 232 C sending pole and, said level converter also including a second switching transistor controlled by said RS 232 C sending pole for switching a connection of said TTL receiving pole between ground and said TTL power pin.
Claim 2
Dependent Claim
171 words
A cable for connection between a personal computer and a sewing machine for transmitting data in the form of different voltage levels, comprising: a personal computer cable connection having an RS 232 C connector for connection to a sending pole, a receiving pole and a ground of a personal computer RS 232 C port; a sewing machine connection having a TTL port connector for connection with a sending pole, a receiving pole, ground and a power pin of a sewing machine TTL port; a level converter integrated in said cable, said level converter including first switching transistor activated by said sending pole of said TTL port for switching a connection of said receiving pole of said RS232 connector between said TTL power pin and a voltage from a capacitor charged by said RS 232 C sending pole and, said level converter also including a second switching transistor controlled by said RS 232 C sending pole for switching a connection of said TTL receiving pole between ground and said TTL power pin.
Claim 3
Dependent Claim
154 words
A cable connection according to claim 1, wherein: said first switching means includes a PNP switching transistor having an emitter connected to said power pin of said TTL port of the sewing machine, having a base connected to said sending pole of the TTL port, and having a collector connected to both said receiving pole of said RS 232 C port and, via a resistor and a diode, to said sending pole of said RS 232 C port, said diode conducting in the direction of said sending pole; said second switching means includes an NPN switching transistor having an emitter connected to ground of both said RS 232 C port and said TTL port, having a base connected to said sending pole of said RS 232 C port and having a collector connected to both said receiving pole of said TTL port and, via a resistor, to said power pin of said TTL port.
Claim 4
Dependent Claim
65 words
A cable connection according to claim 1, wherein: said first switching means connects and disconnects a conductive path between said power pin of said TTL port and said receiving pole of said RS 232 C port; said capacitor having a first connection point connected to said receiving pole of said RS 232 C port via a resistor and having a second connection point to ground.
Claim 5
Dependent Claim
48 words
A cable connection according to claim 1, wherein: said second switching means connects and disconnects a conductive path between said receiving pole of said TTL port and said ground; said power pin of said TTL port being connected to receiving pole of said TTL port via a resistor.
Claim 6
Dependent Claim
245 words
A cable for connection between a personal computer and a sewing machine for transmitting data in the form of different voltage levels, comprising: an RS 232 C connector for connection to a sending pole, a receiving pole and a ground of a personal computer RS 232 C port; a sewing machine connection having a TTL port connector for connection with a sending pole, a receiving pole, ground and a power pin of a sewing machine TTL port; a level converter integrated in said cable, said level converter including first switching means activated by said sending pole of said TTL port for switching a connection of said receiving pole of said RS 232 C port between said TTL power pin and a voltage from a capacitor charged by said RS 232 C sending pole, and said level converter also including a second switching means controlled by said RS 232 C sending pole for switching a connection of said TTL receiving pole between ground and said TTL power pin, said first switching means is a PNP switching transistor, a collector of said PNP switching transistor is connected to said receiving pole of said RS 232 C port and is connected to said sending pole of said RS 232 C port via a resistor and a diode, said diode conducting in a direction of said sending pole, said capacitor having a first connection point between said resistor and said diode and having a second connection point to ground.
Claim 7
Dependent Claim
245 words
A cable for connection between a personal computer and a sewing machine for transmitting data in the form of different voltage levels, comprising: an RS 232 C connector for connection to a sending pole, a receiving pole and a ground of a personal computer RS 232 C port; a sewing machine connection having a TTL port connector for connection with a sending pole, a receiving pole, ground and a power pin of a sewing machine TTL port; a level converter integrated in said cable, said level converter including first switching means activated by said sending pole of said TTL port for switching a connection of said receiving pole of said RS 232 C port between said TTL power pin and a voltage from a capacitor charged by said RS 232 C sending pole, and said level converter also including a second switching means controlled by said RS 232 C sending pole for switching a connection of said TTL receiving pole between ground and said TTL power pin, said first switching means is a PNP switching transistor, a collector of said PNP switching transistor is connected to said receiving pole of said RS 232 C port and is connected to said sending pole of said RS 232 C port via a resistor and a diode, said diode conducting in a direction of said sending pole, said capacitor having a first connection point between said resistor and said diode and having a second connection point to ground.
Claim 8
Dependent Claim
236 words
A cable for connection between a personal computer and a sewing machine for transmitting data in the form of different voltage levels, comprising: an RS 232 C connector for connection to a sending pole, a receiving pole and a ground of a personal computer RS 232 C port; a sewing machine connection having a TTL port connector for connection with a sending pole, a receiving pole, ground and a power pin of a sewing machine TTL port; a level converter integrated in said cable, said level converter including first switching means activated by said sending pole of said TTL port for switching a connection of said receiving pole of said RS 232 C port between said TTL power pin and a voltage from a capacitor charged by said RS 232 C sending pole, and said level converter also including a second switching means controlled by said RS 232 C sending pole for switching a connection of said TTL receiving pole between ground and said TTL power pin, said second switching means is a NPN switching transistor with an emitter connected to ground of each of said RS 232 C port and said TTL port and has a base connected to said sending pole of said RS 232 C port and having a collector connected to both said receiving pole of said TTL port and, via a resistor, to a power supply unit of said TTL port.
Claim 9
Dependent Claim
236 words
A cable for connection between a personal computer and a sewing machine for transmitting data in the form of different voltage levels, comprising: an RS 232 C connector for connection to a sending pole, a receiving pole and a ground of a personal computer RS 232 C port; a sewing machine connection having a TTL port connector for connection with a sending pole, a receiving pole, ground and a power pin of a sewing machine TTL port; a level converter integrated in said cable, said level converter including first switching means activated by said sending pole of said TTL port for switching a connection of said receiving pole of said RS 232 C port between said TTL power pin and a voltage from a capacitor charged by said RS 232 C sending pole, and said level converter also including a second switching means controlled by said RS 232 C sending pole for switching a connection of said TTL receiving pole between ground and said TTL power pin, said second switching means is a NPN switching transistor with an emitter connected to ground of each of said RS 232 C port and said TTL port and has a base connected to said sending pole of said RS 232 C port and having a collector connected to both said receiving pole of said TTL port and, via a resistor, to a power supply unit of said TTL port.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-03-27 | 1998-09-26 | 1999-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-03-27 | 2002-09-26 | 2003-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-03-27 | 2006-09-26 | 2007-03-28 | $7700.00 | Window Closed / Lapsed |