Hydrocarbon detector system
Abstract
Abstract A SYSTEM FOR DETECTING AND QUANITATIVELY MEASURING THE PRESENCE OF UNSATURATED AND AROMATIC HYDROCARBONS, PARTICULARLY VAPORS OF PARTIALLY BURNED AND RESIDUAL UNBURNED HYDROCARBONS IN THE EXHAUSE EMISSIONS OF GASOLINE INTERNAL COMBUSTION ENGINES. THE SYSTEM INCLUDES A PARTIALLY SHIELDED MEMBRANE ADAPTED TO REACT WITH AROMATIC AND UNSATURATED HYDROCARBONS TO PRODUCE DERIVATIVES HAVING STRONG ABSORPTION CHARACTERISTICS IN THE ULTRAVIOLET REGION. THERE IS ALSO PROVIDED AN ULTRAVIOLET FLUORESENCE PHOTOMETER INCLUDING AN ULTRAVIOLET OURCE AND A VISIBLE FLUORESCENT SCREEN BETWEEN WHICH THE EXPOSED MEMBRANE IS INTRODUCED. THE PHOTOMETER INCLUDES A GRAY SCALE OR STEP WEDGE FOR VISUALLY COMPARING THE ULTRAVIOLET ABSORPTION IN THE UNSHIELDED SECTION OF THE MEMBRANE AGAINST A CALIBRATED STANDARD INCLUDING THE SHIELDED SECTION OF THE MEMBRANE AND THE GRAY SCALE.
Inventors
- 👤 Tomas Hirschfeld
- 👤 Noboru Matsu
Bibliographic Details
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USPTO Annuity & Maintenance Windows
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| 3.5 Years (Year 4) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |