US4052664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit monitor to determine power on and circuit working
Assignee: Individual
•
Filing: 1976-05-13
•
Granted: 1977-10-04
•
Expires: 1996-05-13
Abstract
Abstract An assembly of components for monitoring an electrical circuit, and which truly indicates whether the circuit is working; the assembly including a voltage transformer in series with a minimum resistance load, a secondary winding of the transformer communicating with a full wave bridge rectifier connected through a gate, cathode, silicon controlled rectifier and silicon rectifier diode to a pilot lamp.
Inventors
- 👤 Leonard Buster Pohl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:54
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/145; G01R31/00; G01R31/50
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
184 words
A circuit monitoring means, comprising an assembly of electrical components in an eletrical circuit including a voltage transformer having a primary, or high, voltage side and a secondary, or low, voltage side, a full wave rectifying means, a resistor, a gate controlled rectifier, a diode and a current sensing means wherein the primary side of said voltage transformer is connected in series with a circuit to be monitored, and the series connection consisting of the primary side of said transformer and the load to be monitored are connected across an alternating voltage source, and the secondary side of said transformer is connected to said full wave rectifying means and the positive output of said full wave rectifying means is connected through said resistor to the gate of said gate controlled rectifier and the negative side of said full wave rectifying means is connected to the neutral side of said alternating voltage source, and the said current sensing means, diode and gate controlled rectifier are connected in series between the primary side of said voltage transformer and the neutral side of said alternating voltage source.
Claim 2
Dependent Claim
184 words
A circuit monitoring means, comprising an assembly of electrical components in an eletrical circuit including a voltage transformer having a primary, or high, voltage side and a secondary, or low, voltage side, a full wave rectifying means, a resistor, a gate controlled rectifier, a diode and a current sensing means wherein the primary side of said voltage transformer is connected in series with a circuit to be monitored, and the series connection consisting of the primary side of said transformer and the load to be monitored are connected across an alternating voltage source, and the secondary side of said transformer is connected to said full wave rectifying means and the positive output of said full wave rectifying means is connected through said resistor to the gate of said gate controlled rectifier and the negative side of said full wave rectifying means is connected to the neutral side of said alternating voltage source, and the said current sensing means, diode and gate controlled rectifier are connected in series between the primary side of said voltage transformer and the neutral side of said alternating voltage source.
Claim 3
Dependent Claim
22 words
The combination of electrical components as set forth in claim No. 1 wherein said gate controlled rectifier is a silicon controlled rectifier.
Claim 4
Dependent Claim
24 words
The combination of electrical components as set forth in claim No. 1 wherein said current sensing means provides a visual observation of current present.
Claim 5
Dependent Claim
39 words
The combination of electrical components as set forth in claim No. 1 wherein said current sensing means is activated by the application of said alternating voltage source and by the flow of current through said circuit to be monitored.
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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) | 1980-10-03 | 1981-04-04 | 1981-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-03 | 1985-04-04 | 1985-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-03 | 1989-04-04 | 1989-10-04 | $7700.00 | Window Closed / Lapsed |