US3566154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated circuit commutator
Assignee: United States Department of the Navy
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Filing: 1969-01-02
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Granted: 1971-02-23
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Expires: 1989-01-02
Abstract
Abstract Invention is a ring counter which may be fabricated in any desired practical length by using integrated circuit techniques. It utilizes split collector transistors in conjunction with silicon controlled rectifiers and standard transistors to effect stepping at a rapid rate. Operation under wide temperature conditions and with extremely low power consumption is provided. Provision is also made for insuring that no more than one digital 1 will be present in the counter at any time.
Inventors
- 👤 Jack C Loessi
- 👤 Reginald M Rhue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:08
CPC Classifications
H; H03; H03K; H03K23/00; H03K23/84
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
77 words
In a ring counter: a plurality of electrically energizable stages; means connecting said stages in a ring; said means including a split collector transistor and a control device in each stage; and one of the collectors of the split collector transistor of one stage being connected to the control device of the next succeeding stage except for the said one of the collectors of the split collector transistor of the last stage which is connected to ground.
Claim 2
Dependent Claim
77 words
In a ring counter: a plurality of electrically energizable stages; means connecting said stages in a ring; said means including a split collector transistor and a control device in each stage; and one of the collectors of the split collector transistor of one stage being connected to the control device of the next succeeding stage except for the said one of the collectors of the split collector transistor of the last stage which is connected to ground.
Claim 3
Dependent Claim
49 words
A ring counter as recited in claim 1: wherein the control device comprises a silicon controlled rectifier having a gate; and wherein one of the collectors of said split collector transistor of one stage is connected to the gate of the silicon controlled rectifier of the next succeeding stage.
Claim 4
Dependent Claim
49 words
A ring counter as recited in claim 1: wherein the control device comprises a silicon controlled rectifier having a gate; and wherein one of the collectors of said split collector transistor of one stage is connected to the gate of the silicon controlled rectifier of the next succeeding stage.
Claim 5
Dependent Claim
39 words
A ring counter as recited in claim 2: including additionally a terminal for connection to a source of energy; and a control circuit connected between said terminal and the gate of the silicon controlled rectifier of the first stage.
Claim 6
Dependent Claim
162 words
In a ring counter: a plurality of electrically energizable stages; means connecting said stages in a ring; each of said stages comprising first and second transistors, a silicon controlled rectifier having a gate, and a load resistor; each said first transistor having first and second collector; an input terminal for connection to a pulse source; a first terminal for connection to a source of energy; a second terminal for connection to ground; means connecting said first and second transistors, said silicon controlled rectifier and load resistor of each stage between said terminals; said first-mentioned means including a control circuit connected between said first terminal and the gate of the silicon controlled rectifier of the first of said stages; and the second collector of the first transistor of each stage being connected to the gate of the silicon controlled rectifier of the next succeeding stage, except for the second collector of the first transistor of the last stage which is connected to ground.
Claim 7
Dependent Claim
162 words
In a ring counter: a plurality of electrically energizable stages; means connecting said stages in a ring; each of said stages comprising first and second transistors, a silicon controlled rectifier having a gate, and a load resistor; each said first transistor having first and second collector; an input terminal for connection to a pulse source; a first terminal for connection to a source of energy; a second terminal for connection to ground; means connecting said first and second transistors, said silicon controlled rectifier and load resistor of each stage between said terminals; said first-mentioned means including a control circuit connected between said first terminal and the gate of the silicon controlled rectifier of the first of said stages; and the second collector of the first transistor of each stage being connected to the gate of the silicon controlled rectifier of the next succeeding stage, except for the second collector of the first transistor of the last stage which is connected to ground.
Claim 8
Dependent Claim
48 words
A ring counter as recited in claim 1: wherein said control circuit comprises a third terminal; a resistor connected between the third terminal and the first terminal; and a diode string connected between the third terminal and the gate of the silicon controlled rectifier of the first stage.
References Cited (Backward Citations)
US3134026A
Cited
US3316451A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |