US3191071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable frequency/width pulse generator
Assignee: RADIO FREQUENCY LAB Inc
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Filing: 1963-02-18
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Granted: 1965-06-22
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Expires: 1983-02-18
Abstract
No abstract record available.
Inventors
- 👤 George L King
- 👤 Charles A Higgins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:05
CPC Classifications
H; H03; H03K; H03K7/00; H03K7/08; H03K3/00; H03K3/02; H03K3/26; H03K3/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A VARIABLE FREQUENCY/WIDTH PULSE GENERATOR COMPRISING, (A) A SATURABLE CORE INVERTER TO PRODUCE FIRST SIGNALS OF SQUARE WAVE FORM, (B) AN ADJUSTABLE DIRECT CURRENT VOLTAGE APPLIED TO SAID INVERTER TO SIMULTANEOUSLY VARY THE FREQUENCY AND AMPLITUDE OF SAID FIRST SIGNALS, (C) A VOLTAGE INTEGRATOR, (D) MEANS TO APPLY THE INVERTER OUTPUT TO SAID INTEGRATOR, (E) A DIRECT CURRENT BIASING VOLTAGE FOR SAID INTEGRATOR TO PRODUCE OUTPUT SIGNALS OF A FREQUENCY CORRESPONDING WITH THAT OF THE FIRST SIGNALS BUT OF SAWTOOTH WAVE FORM, (F) A TRIGGER CIRCUIT CAPABLE OF CHANGING ITS CONDUCTING STATE ABRUPTLY AT A PREDETERMINED TRIGGERING VOLTAGE LEVEL, AND (G) MEANS APPLYING SAID INTEGRATOR OUTPUT SIGNALS TO SAID TRIGGER CIRCUIT, SAID DIRECT CURRENT BIASING VOLTAGE BEING SELECTIVELY ADJUSTABLE TO VARY THE LEVEL OF SAID OUTPUT SIGNALS RELATIVE TO THE TRIGGERING VOLTAGE LEVEL OF THE TRIGGER CIRCUIT.
Claim 2
Dependent Claim
137 words
A VARIABLE FREQUENCY/WIDTH PULSE GENERATOR COMPRISING, (A) A SATURABLE CORE INVERTER TO PRODUCE FIRST SIGNALS OF SQUARE WAVE FORM, (B) AN ADJUSTABLE DIRECT CURRENT VOLTAGE APPLIED TO SAID INVERTER TO SIMULTANEOUSLY VARY THE FREQUENCY AND AMPLITUDE OF SAID FIRST SIGNALS, (C) A VOLTAGE INTEGRATOR, (D) MEANS TO APPLY THE INVERTER OUTPUT TO SAID INTEGRATOR, (E) A DIRECT CURRENT BIASING VOLTAGE FOR SAID INTEGRATOR TO PRODUCE OUTPUT SIGNALS OF A FREQUENCY CORRESPONDING WITH THAT OF THE FIRST SIGNALS BUT OF SAWTOOTH WAVE FORM, (F) A TRIGGER CIRCUIT CAPABLE OF CHANGING ITS CONDUCTING STATE ABRUPTLY AT A PREDETERMINED TRIGGERING VOLTAGE LEVEL, AND (G) MEANS APPLYING SAID INTEGRATOR OUTPUT SIGNALS TO SAID TRIGGER CIRCUIT, SAID DIRECT CURRENT BIASING VOLTAGE BEING SELECTIVELY ADJUSTABLE TO VARY THE LEVEL OF SAID OUTPUT SIGNALS RELATIVE TO THE TRIGGERING VOLTAGE LEVEL OF THE TRIGGER CIRCUIT.
References Cited (Backward Citations)
US3095508A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |