Patent US3221545A successfully refreshed from Google Patents.
US3221545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Analyzer for internal combustion engines
Assignee: ExxonMobil Oil Corp
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Filing: 1962-02-08
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Granted: 1965-12-07
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Expires: 1982-02-08
Abstract
No abstract record available.
Inventors
- 👤 Alfred E Traver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:25
CPC Classifications
F; F02; F02P; F02P17/00; F02P17/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A MULTI-CYLINDER ENGINE ANALYZER FOR TESTING A SPARKFIRED INTERNAL COMBUSTION ENGINE COMPRISING AN OSCILLOSCOPE HAVING VERTICAL DEFLECTION AND HORIZONTAL DEFLECTION AMPLIFIERS RESPECTIVELY CONNECTED TO THE VERTICAL AND HORIZONTAL DEFLECTION CIRCUITS OF A CATHODE-RAY TUBE, A VERTICAL SWEEP OSCILLATOR, A HORIZONTAL SWEEP OSCILLATOR, MEANS CAPACITIVELY COUPLED TO THE HIGH-TENSION IGNITION SYSTEM OF SAID ENGINE FOR SUPPLYING THE IGNITION CIRCUIT PULSES OF ALL CYLINDERS TO SAID VERTICAL DEFLECTION AMPLIFIER AND TO SAID HORIZONTAL SWEEP OSCILLATOR AND FOR SUPPLYING THE IGNITION CIRCUIT PULSES AT A SELECTED ONE OF SAID CYLINDERS TO SAID VERTICAL SWEEP OSCILLATOR, A VERTICAL DRIVE CIRCUIT, SWITCHING MEANS OPERABLE SELECTIVELY TO PROVIDE A RASTER DISPLAY OR A PARADE DISPLAY OF THE IGNITION CIRCUIT EVENTS COMPRISING SWITCHS WHICH FOR THE RASTER DISPLAY PROVIDES CONNECTIONS FROM SAID VERTICAL DRIVE CIRCUIT TO SAID VERTICAL SWEEP OSCILLATOR AND TO SAID VERTICAL DEFLECTION AMPLIFIER AND PROVIDES CONNECTIONS FROM SAID
Claim 2
Dependent Claim
144 words
A MULTI-CYLINDER ENGINE ANALYZER FOR TESTING A SPARKFIRED INTERNAL COMBUSTION ENGINE COMPRISING AN OSCILLOSCOPE HAVING VERTICAL DEFLECTION AND HORIZONTAL DEFLECTION AMPLIFIERS RESPECTIVELY CONNECTED TO THE VERTICAL AND HORIZONTAL DEFLECTION CIRCUITS OF A CATHODE-RAY TUBE, A VERTICAL SWEEP OSCILLATOR, A HORIZONTAL SWEEP OSCILLATOR, MEANS CAPACITIVELY COUPLED TO THE HIGH-TENSION IGNITION SYSTEM OF SAID ENGINE FOR SUPPLYING THE IGNITION CIRCUIT PULSES OF ALL CYLINDERS TO SAID VERTICAL DEFLECTION AMPLIFIER AND TO SAID HORIZONTAL SWEEP OSCILLATOR AND FOR SUPPLYING THE IGNITION CIRCUIT PULSES AT A SELECTED ONE OF SAID CYLINDERS TO SAID VERTICAL SWEEP OSCILLATOR, A VERTICAL DRIVE CIRCUIT, SWITCHING MEANS OPERABLE SELECTIVELY TO PROVIDE A RASTER DISPLAY OR A PARADE DISPLAY OF THE IGNITION CIRCUIT EVENTS COMPRISING SWITCHS WHICH FOR THE RASTER DISPLAY PROVIDES CONNECTIONS FROM SAID VERTICAL DRIVE CIRCUIT TO SAID VERTICAL SWEEP OSCILLATOR AND TO SAID VERTICAL DEFLECTION AMPLIFIER AND PROVIDES CONNECTIONS FROM SAID
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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) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |