Patent US3248569A successfully refreshed from Google Patents.
US3248569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amplifier passive nonlinear feedback voltage limiting network
Assignee: Beckman Coulter Inc
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Filing: 1963-06-26
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Granted: 1966-04-26
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Expires: 1983-06-26
Abstract
No abstract record available.
Inventors
- 👤 Barret B Weekes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:16
CPC Classifications
H; H03; H03G; H03G11/00; H03G11/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A VOLTAGE LIMITER FOR USE WITH AN AMPLIFIER HAVING A LINEAR FEEDBACK NETWORK COUPLED THEREWITH COMPRISING AN INPUT TERMINAL AND AN OUTPUT TERMINAL, FIRST AND SECOND VOLTAGE TERMINALS FOR CONNECTION ACROSS A SOURCE OF POTENTIAL, FIRST, SECOND, THIRD, AND FOURTH DIODES, SAID FIRST, SECOND, AND THIRD DIODES BEIN GCONNECTED IN SERIES BETWEEN SAID INPUT AND OUTPUT TERMINALS, WITH SAID FIRST DIODE POLED IN A DIRECTION OPPOSITE TO SAID SECOND AND THIRD DIODES, A JUNCTION TERMINAL BETWEEN SAID SECOND AND THIRD DIODES, SAID FOURTH DIODE BEING CONNECTED BETWEEN SAID FIRST VOLTAGE TERMINAL AND SAID JUNCTION, AND AN IMPEDANCE, SAID IMPEDANCE BEING CONNECTED BETWEEN SAID JUNCTION AND SAID SECOND VOLTAGE TERMINAL.
Claim 2
Dependent Claim
109 words
A VOLTAGE LIMITER FOR USE WITH AN AMPLIFIER HAVING A LINEAR FEEDBACK NETWORK COUPLED THEREWITH COMPRISING AN INPUT TERMINAL AND AN OUTPUT TERMINAL, FIRST AND SECOND VOLTAGE TERMINALS FOR CONNECTION ACROSS A SOURCE OF POTENTIAL, FIRST, SECOND, THIRD, AND FOURTH DIODES, SAID FIRST, SECOND, AND THIRD DIODES BEIN GCONNECTED IN SERIES BETWEEN SAID INPUT AND OUTPUT TERMINALS, WITH SAID FIRST DIODE POLED IN A DIRECTION OPPOSITE TO SAID SECOND AND THIRD DIODES, A JUNCTION TERMINAL BETWEEN SAID SECOND AND THIRD DIODES, SAID FOURTH DIODE BEING CONNECTED BETWEEN SAID FIRST VOLTAGE TERMINAL AND SAID JUNCTION, AND AN IMPEDANCE, SAID IMPEDANCE BEING CONNECTED BETWEEN SAID JUNCTION AND SAID SECOND VOLTAGE TERMINAL.
References Cited (Backward Citations)
BE567866A
Cited
US3166720A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |