Patent US3189758A successfully refreshed from Google Patents.
US3189758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isolating and pulse-producing circuit
Assignee: National Semiconductor Corp
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Filing: 1962-07-23
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Granted: 1965-06-15
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Expires: 1982-07-23
Abstract
No abstract record available.
Inventors
- 👤 Brian H Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:19
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
195 words
ELECTRICAL DRIVE CIRCUIT MEANS FOR PRODUCING OUTPUT DRIVE SIGNALS AT DRIVE CIRCUIT OUTPUT TERMINALS ELECTRICALLY ISOLATED FROM A SOURCE OF ELECTRICAL INPUT SIGNALS, SAID DRIVE CIRCUIT MEANS COMPRISING, IN COMBINATION, GATING MEANS HAVING GATING CIRCUIT OUTPUT TERMINALS, GATING CIRCUIT INPUT TERMINALS, AND GATING CIRCUIT ELEMENTS FOR PRESENTING GATING SIGNALS AT SAID GATING CIRCUIT OUTPUT TERMINALS WHEN INPUT SIGNALS TO ONE POLARITY ARE APPLIED TO SAID GATING CIRCUIT INPUT TERMINALS, AND PROVIDING AN ESSENTIALLY INFINITELY LARGE IMPEDANCE BETWEEN EACH OF SAID GATING CIRCUIT OUTPUT TERMINALS AND SAID GATING CIRCUIT INPUT TERMINALS WHEN INPUT SIGNALS OF SAID ONE POLARITY ARE NOT APPLIED TO SAID GATING CIRCUIT INPUT TERMINALS, AND CONTROL CIRCUIT MEANS CONNECTED TO SAID GATING CIRCUIT OUTPUT TERMINALS AND INCLUDING SAID DRIVE CIRCUIT OUTPUT TERMINALS AND CONTROL CIRCUIT ELEMENTS FOR PROVIDING AN ESSENTIALLY INFINITELY LARGE IMPEDANCE BETWEEN EACH OF SAID DRIVE CIRCUIT OUTPUT TERMINALS AND SAID GATING CIRCUIT OUTPUT TERMINALS AND STORING THE ELECTRICAL ENERGY OF SAID GATING SIGNALS WHEN SAID GATING SIGNALS ARE PRESENT AT SAID GATING CIRCUIT OUTPUT TERMINALS, AND DELIVERING SAID STORED ELECTRICAL ENERGY TO SAID DRIVE CIRCUIT OUTPUT TERMINALS WHEN SAID GATING SIGNALS ARE NOT PRESENT AT SAID GATING CIRCUIT OUTPUT TERMINALS.
Claim 2
Dependent Claim
195 words
ELECTRICAL DRIVE CIRCUIT MEANS FOR PRODUCING OUTPUT DRIVE SIGNALS AT DRIVE CIRCUIT OUTPUT TERMINALS ELECTRICALLY ISOLATED FROM A SOURCE OF ELECTRICAL INPUT SIGNALS, SAID DRIVE CIRCUIT MEANS COMPRISING, IN COMBINATION, GATING MEANS HAVING GATING CIRCUIT OUTPUT TERMINALS, GATING CIRCUIT INPUT TERMINALS, AND GATING CIRCUIT ELEMENTS FOR PRESENTING GATING SIGNALS AT SAID GATING CIRCUIT OUTPUT TERMINALS WHEN INPUT SIGNALS TO ONE POLARITY ARE APPLIED TO SAID GATING CIRCUIT INPUT TERMINALS, AND PROVIDING AN ESSENTIALLY INFINITELY LARGE IMPEDANCE BETWEEN EACH OF SAID GATING CIRCUIT OUTPUT TERMINALS AND SAID GATING CIRCUIT INPUT TERMINALS WHEN INPUT SIGNALS OF SAID ONE POLARITY ARE NOT APPLIED TO SAID GATING CIRCUIT INPUT TERMINALS, AND CONTROL CIRCUIT MEANS CONNECTED TO SAID GATING CIRCUIT OUTPUT TERMINALS AND INCLUDING SAID DRIVE CIRCUIT OUTPUT TERMINALS AND CONTROL CIRCUIT ELEMENTS FOR PROVIDING AN ESSENTIALLY INFINITELY LARGE IMPEDANCE BETWEEN EACH OF SAID DRIVE CIRCUIT OUTPUT TERMINALS AND SAID GATING CIRCUIT OUTPUT TERMINALS AND STORING THE ELECTRICAL ENERGY OF SAID GATING SIGNALS WHEN SAID GATING SIGNALS ARE PRESENT AT SAID GATING CIRCUIT OUTPUT TERMINALS, AND DELIVERING SAID STORED ELECTRICAL ENERGY TO SAID DRIVE CIRCUIT OUTPUT TERMINALS WHEN SAID GATING SIGNALS ARE NOT PRESENT AT SAID GATING CIRCUIT OUTPUT TERMINALS.
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) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |