US3344632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process control apparatus
Assignee: Decca Ltd
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Filing: 1965-05-05
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Granted: 1967-10-03
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Expires: 1985-05-05
Abstract
No abstract record available.
Inventors
- 👤 Phillipson Alan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:31
CPC Classifications
B; B21; B21C; B21C31/00; B23; B23D; B23D36/00; B23D36/0008; B23D36/0033; B23D36/0058
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
112 words
APPARATUS FOR USE WITH AN EXTRUSION PRESS EXTRUDING AN ELONGATED ARTICLE; A LASER FOR DIRECTING A COHERENT LIGHT BEAM ON TO THE MOVING ARTICLE IN A DIRECTION HAVING A COMPONENT ALONG THE LINE OF MOVEMENT OF THE ARTICLE, A RECEIVER RECEIVING LIGHT REFLECTED BACK FROM THE ARTICLE, MIXING MEANS PRODUCING AN OUTPUT SIGNAL DEPENDENT ON THE DIFFERENCE IN FREQUENCY BETWEEN THE RADIATED AND RECEIVED LIGHT, AN ADJUSTABLE DRIVE FOR FORCING THE ARTICLE THROUGH THE EXTRUSION PRESS, A GENERATOR GENERATING A REFERENCE SIGNAL, A COMPARATOR PRODUCING AN ERROR SIGNAL REPRESSING THE DIFFERENCE BETWEEN SAID OUTPUT SIGNAL AND SAID REFERENCE SIGNAL AND MEANS FOR ALTERING SAID ADJUSTABLE DRIVE IN ACCORDANCE WITH SAID ERROR SIGNAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |