Built-in type speed control for conveyorized continuous etcher
Abstract
Abstract A continuous spray etching machine is disclosed in which the spray chamber and a longitudinally extending conveying means therethrough cooperate to cause articles being etched to the continuously advanced through the spray chamber, and in which the spray chamber is provided with a built-in automatic control to control the conveying speed. The control is provided with its own etchable supply of control element strip material, and the strip material is fed by the control into the spray chamber and is therein destructively tested and monitored by the control as a measure of the degree of material removal both from the control element strip and, analogously, from the attendant articles being etched.
Inventors
- 👤 Robert C Benton
- 👤 Blair W Heffner
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |