US5721844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multifunctional data switch
Assignee: Individual
•
Filing: 1995-10-30
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Granted: 1998-02-24
•
Expires: 2015-10-30
Abstract
Abstract A multifunctional data switch including a switch, a first computer connector connected to a first computer, a second computer connector connected to a second computer, and a printer connector connected to a printer, wherein the switch can be controlled to connect the first computer connector or the second computer connector to the printer connector for permitting the first computer or the second computer to use the printer, or to connect the first computer connector to the second computer connector for data transmission between the first computer and the second computer.
Inventors
- 👤 Chia-Chi Chang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:16
CPC Classifications
G; G06; G06F; G06F13/00; G06F13/38; G06F13/40; G06F13/4004; G06F13/4022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
1478 words
A multifunctional data switch comprising a first computer connector connected to a first computer, a second computer connector connected to a second computer, a printer connector connected to a printer, and a switch controlled to connect said first computer connector or said second computer connector to said printer connector for permitting said first computer or said second computer to use said printer, or to connect said first computer connector to said second computer connector for permitting said first computer and said second computer to communicate with each other, wherein the contact "a" of the second contact pin of the A junction of the switch is connected to the second contact pin of the P junction and then connected to the contact "b" of the second contact pin of the B junction, and the contact "c" of the second contact pin of the A junction is connected to the contact "c" of the fifth contact pin of the B junction; the contact "a" of the third contact pin of the A junction is connected to the third contact pin of the P junction and then connected to the contact "b" of the third contact pin of the B junction, and the contact "c" of the third contact pin of the A junction is connected to the contact "c" of the 13th contact pin of the B junction; the contact "a" of the fourth contact pin of the A junction of the switch is connected to the fourth contact pin of the P junction and then connected to the contact "b" of the fourth contact pin of the B junction, and the contact "c" of the fourth contact pin of the A junction is connected to the contact "c" of the 12th contact pin of the junction; the contact "a" of the 5th contact pin of the A junction of the switch is connected to the 5th contact pin of the P junction and then connected to the contact "b" of the 5th contact pin of the B junction, and the contact "c" of the 5th contact pin of the A junction is connected to the contact "c" of the 10th contact pin of the B junction; the contact "a" of the 6th contact pin of the A junction of the switch is connected to the 6th contact pin of the P junction and then connected to the contact "b" of the 6th contact pin of the B junction, and the contact "c" of the 6th contact pin of the A junction is connected to the contact "c" of the 11th contact pin of the B junction; the contact "a" of the 7th contact pin of the A junction of the switch is connected to the 7th contact pin of the P junction and then connected to the 7th contact pin of the B junction; the contact "a" of the 8th contact pin of the A junction of the switch is connected to the 8th contact pin of the P junction and then connected to the contact "b" of the 8th contact pin of the B junction; the contact "a" of the 9th contact pin of the A junction of the switch is connected to the 9th contact pin of the P junction and then connected to the contact "b" of the 9th contact pin of the B junction; the contact "a" of the 10th contact pin of the A junction of the switch is connected to the 10th contact pin of the P junction and then connected to the contact "b" of the 10th contact pin of the B junction, and the contact "c" of the 10th contact pin of the A junction is connected to the contact "c" of the 5th contact pin of the B junction; the contact "a" of the 11th contact pin of the A junction of the switch is connected to the 11th contact pin of the P junction and then connected to the contact "b" of the 11th contact pin of the B junction, and the contact "c" of the 11th contact pin of the A junction is connected to the contact "c" of the 6th contact pin of the B junction; the contact "a" of the 12th contact pin of the A junction of the switch is connected to the 12th contact pin of the P junction and then connected to the contact "b" of the 12th contact pin of the B junction, and the contact "c" of the 12th contact pin of the A junction is connected to the contact "c" of the 4th contact pin of the B junction; the contact "a" of the 13th contact pin of the A junction of the switch is connected to the 13th contact pin of the P junction and then connected to the contact "b" of the 13th contact pin of the B junction, and the contact "c" of the 13th contact pin of the A junction is connected to the contact "c" of the 3rd contact pin of the B junction; the contact "a" of the 14th contact pin of the A junction of the switch is connected to the 14th contact pin of the P junction and then connected to the contact "b" of the 14th contact pin of the B junction, and the contact "c" of the 14th contact pin of the A junction is connected to the contact "c" of the 14th contact pin of the B junction; the contact "a" of the 15th contact pin of the A junction of the switch 10 is connected to the 15th contact pin of the P junction and then connected to the contact "b" of the 15th contact pin of the B junction, and the contact "c" of the 15th contact pin of the A junction is connected to the contact "c" of the second contact pin of the B junction; the contact "a" of the 16th contact pin of the A junction is connected to the 16th contact pin of the P junction and then connected to the contact "b" of the 16th contact pin of the B junction, and the contact "c" of the 16th contact pin of the A junction is connected to the contact "c" of the 16th contact pin of the B junction; the contact "a" of the 17th contact pin of the A junction of the switch is connected to the 17th contact pin of the P junction and then connected to the contact "b" of the 17th contact pin of the B junction, and the contact "c" of the 17th contact pin of the A junction is connected to the contact "c" of the 17th contact pin of the B junction; the contact "a" of the 18th contact pin of the A junction of the switch is connected to the 18th contact pin of the P junction and then connected to the contact "b" of the 18th contact pin of the B junction; the contact "a" of the 19th contact pin of the A junction of the switch is connected to the 19th contact pin of the P junction and then connected to the contact "b" of the 19th contact pin of the B junction; the contact "a" of the 20th contact pin of the A junction of the switch is connected to the 20th contact of the P junction and then connected to the contact "b" of the 20th contact pin of the B junction; the contact "a" of the 21st contact pin of the A junction of the switch is connected to the 21st contact pin of the P junction and then connected to the contact "b" of the 21st contact pin of the B junction; the contact "a" of the 22nd contact pin of the A junction of the switch is connected to the 22nd contact pin of the P junction and then connected to the contact "b" of the 22nd contact pin of the B junction; the contact "a" of the 23rd contact pin of the A junction of the switch is connected to the 23rd contact pin of the P junction and then connected to the contact "b" of the 23rd contact pin of the B junction; the contact "a" of the 24th contact pin of the A junction of the switch is connected to the 24th contact pin of the P junction and then connected to the contact "b" of the 24th contact pin of the B junction; the contact "a" of the 25th contact pin of the A junction of the switch is connected to the 25th contact pin of the P junction and then connected to the contact "b" of the 25th contact pin of the B junction, and the contact "b" of the 25th contact pin of the A junction is connected to the contact "c" of the 25th contact pin of the B junction.
Claim 2
Dependent Claim
1478 words
A multifunctional data switch comprising a first computer connector connected to a first computer, a second computer connector connected to a second computer, a printer connector connected to a printer, and a switch controlled to connect said first computer connector or said second computer connector to said printer connector for permitting said first computer or said second computer to use said printer, or to connect said first computer connector to said second computer connector for permitting said first computer and said second computer to communicate with each other, wherein the contact "a" of the second contact pin of the A junction of the switch is connected to the second contact pin of the P junction and then connected to the contact "b" of the second contact pin of the B junction, and the contact "c" of the second contact pin of the A junction is connected to the contact "c" of the fifth contact pin of the B junction; the contact "a" of the third contact pin of the A junction is connected to the third contact pin of the P junction and then connected to the contact "b" of the third contact pin of the B junction, and the contact "c" of the third contact pin of the A junction is connected to the contact "c" of the 13th contact pin of the B junction; the contact "a" of the fourth contact pin of the A junction of the switch is connected to the fourth contact pin of the P junction and then connected to the contact "b" of the fourth contact pin of the B junction, and the contact "c" of the fourth contact pin of the A junction is connected to the contact "c" of the 12th contact pin of the junction; the contact "a" of the 5th contact pin of the A junction of the switch is connected to the 5th contact pin of the P junction and then connected to the contact "b" of the 5th contact pin of the B junction, and the contact "c" of the 5th contact pin of the A junction is connected to the contact "c" of the 10th contact pin of the B junction; the contact "a" of the 6th contact pin of the A junction of the switch is connected to the 6th contact pin of the P junction and then connected to the contact "b" of the 6th contact pin of the B junction, and the contact "c" of the 6th contact pin of the A junction is connected to the contact "c" of the 11th contact pin of the B junction; the contact "a" of the 7th contact pin of the A junction of the switch is connected to the 7th contact pin of the P junction and then connected to the 7th contact pin of the B junction; the contact "a" of the 8th contact pin of the A junction of the switch is connected to the 8th contact pin of the P junction and then connected to the contact "b" of the 8th contact pin of the B junction; the contact "a" of the 9th contact pin of the A junction of the switch is connected to the 9th contact pin of the P junction and then connected to the contact "b" of the 9th contact pin of the B junction; the contact "a" of the 10th contact pin of the A junction of the switch is connected to the 10th contact pin of the P junction and then connected to the contact "b" of the 10th contact pin of the B junction, and the contact "c" of the 10th contact pin of the A junction is connected to the contact "c" of the 5th contact pin of the B junction; the contact "a" of the 11th contact pin of the A junction of the switch is connected to the 11th contact pin of the P junction and then connected to the contact "b" of the 11th contact pin of the B junction, and the contact "c" of the 11th contact pin of the A junction is connected to the contact "c" of the 6th contact pin of the B junction; the contact "a" of the 12th contact pin of the A junction of the switch is connected to the 12th contact pin of the P junction and then connected to the contact "b" of the 12th contact pin of the B junction, and the contact "c" of the 12th contact pin of the A junction is connected to the contact "c" of the 4th contact pin of the B junction; the contact "a" of the 13th contact pin of the A junction of the switch is connected to the 13th contact pin of the P junction and then connected to the contact "b" of the 13th contact pin of the B junction, and the contact "c" of the 13th contact pin of the A junction is connected to the contact "c" of the 3rd contact pin of the B junction; the contact "a" of the 14th contact pin of the A junction of the switch is connected to the 14th contact pin of the P junction and then connected to the contact "b" of the 14th contact pin of the B junction, and the contact "c" of the 14th contact pin of the A junction is connected to the contact "c" of the 14th contact pin of the B junction; the contact "a" of the 15th contact pin of the A junction of the switch 10 is connected to the 15th contact pin of the P junction and then connected to the contact "b" of the 15th contact pin of the B junction, and the contact "c" of the 15th contact pin of the A junction is connected to the contact "c" of the second contact pin of the B junction; the contact "a" of the 16th contact pin of the A junction is connected to the 16th contact pin of the P junction and then connected to the contact "b" of the 16th contact pin of the B junction, and the contact "c" of the 16th contact pin of the A junction is connected to the contact "c" of the 16th contact pin of the B junction; the contact "a" of the 17th contact pin of the A junction of the switch is connected to the 17th contact pin of the P junction and then connected to the contact "b" of the 17th contact pin of the B junction, and the contact "c" of the 17th contact pin of the A junction is connected to the contact "c" of the 17th contact pin of the B junction; the contact "a" of the 18th contact pin of the A junction of the switch is connected to the 18th contact pin of the P junction and then connected to the contact "b" of the 18th contact pin of the B junction; the contact "a" of the 19th contact pin of the A junction of the switch is connected to the 19th contact pin of the P junction and then connected to the contact "b" of the 19th contact pin of the B junction; the contact "a" of the 20th contact pin of the A junction of the switch is connected to the 20th contact of the P junction and then connected to the contact "b" of the 20th contact pin of the B junction; the contact "a" of the 21st contact pin of the A junction of the switch is connected to the 21st contact pin of the P junction and then connected to the contact "b" of the 21st contact pin of the B junction; the contact "a" of the 22nd contact pin of the A junction of the switch is connected to the 22nd contact pin of the P junction and then connected to the contact "b" of the 22nd contact pin of the B junction; the contact "a" of the 23rd contact pin of the A junction of the switch is connected to the 23rd contact pin of the P junction and then connected to the contact "b" of the 23rd contact pin of the B junction; the contact "a" of the 24th contact pin of the A junction of the switch is connected to the 24th contact pin of the P junction and then connected to the contact "b" of the 24th contact pin of the B junction; the contact "a" of the 25th contact pin of the A junction of the switch is connected to the 25th contact pin of the P junction and then connected to the contact "b" of the 25th contact pin of the B junction, and the contact "b" of the 25th contact pin of the A junction is connected to the contact "c" of the 25th contact pin of the B junction.
References Cited (Backward Citations)
US4271403A
Cited
US5276443A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-02-23 | 2001-08-25 | 2002-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-02-23 | 2005-08-25 | 2006-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-02-23 | 2009-08-25 | 2010-02-24 | $7700.00 | Window Closed / Lapsed |