Method of making fuel injection valve
Abstract
Abstract THERE IS DESCRIBED A FUEL INJECTION VALVE WHICH IS MADE IN THE FOLLOWING MANNER: TWO METALS STRIPS, ONE OF WHICH IS PROVIDED ON ONE FACE WITH PARALLEL EXTENDING LONGITUDINAL GROOVES, ARE SUPERPOSED IN REGISTRY AND WITH THE GROOVED FACE COVERED. THEREUPON THE STRIPS ARE BENT AS A UNIT TO FORM A DOUBLE-JACKETED TUBULAR BODY WHICH IS SUBSEQUENTLY WELDED AND CUT INTO REQUIRED LENGTHS. ANNULAR INLET AND OUTLET GROOVES ARE PROVIDED IN SAID BODY TO COMMUNICATE WITH INTERNAL LONGITUDINAL FUEL CHANNELS FORMED BY SAID LONGITUDINAL GROOVES. BY MEANS OF ROLLING OPERATIONS, THE ENDS OF SAID FUEL CHANNELS ARE SEALED AND FURTHER, CIRCUMFERENTIALLY REDUCED AREAS ARE PROVIDED IN SAID VALVE BODY FOR POSITIONING VALVE COMPONENTS THEREIN.
Inventors
- 👤 Gunther Stradtmann
Bibliographic Details
Claims Analysis
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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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |