Ignition test probe
Patent 5001432 Issued on March 19, 1991. Estimated Expiration Date: 
April 16, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 16, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3711767 3763421 Capacitive pulse pickup Shielded differentiator for automotive ignition applications Ignition and combustion engine performance monitor Spark plug testing under dynamic load Patent #: 4825167 InventorApplicationNo. 509888 filed on 04/16/1990US Classes:324/402, Apparatus for coupling a measuring instrument to an ignition system73/117.3, With continuous operation324/384, Using plural tests in a conventional ignition system324/395, Using an illuminating device to indicate spark plug condition324/399Wherein a measured electric quantity indicates spark plug conditionExaminersPrimary: Eisenzopf, Reinhard J.Assistant: Mueller, Robert W. International ClassF02D 017/00AbstractA self-contained handheld peak ignition breakdown voltage probe locates faulty sparkplugs in an internal combustion engine. The probe has a novel dual-polarity detection system suitable for all ignition systems, distributorless or distributor types. Each nanosecond peak breakdown ignition event is signalled by a high-intensity LED lamp lit for a fixed period of time. An adjustable calibrated threshold level provides precise control of acceptance level. Other problems such as cabling, plug gap, and relative compression may also be inferred. The simple arrangement of integrated circuits provides a novel and useful tool for locating ignition problems.Field of SearchIn situ testing of spark plugUsing an illuminating device to indicate spark plug condition With an air gap in series with spark plug to indicate spark plug condition Wherein a measured electric quantity indicates spark plug condition Apparatus for coupling a measuring instrument to an ignition system Using capacitive type measurement With a capacitive sensing means Including a probe type structure By spark or arc discharge With continuous operation MOTOR AND ENGINE TESTING | |
