Patent US3355014A successfully refreshed from Google Patents.
US3355014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic surface flaw detector
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1964-11-06
•
Granted: 1967-11-28
•
Expires: 1984-11-06
Abstract
No abstract record available.
Inventors
- 👤 Daniel J Howles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:02
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/84; G01N21/88; G01N21/95; G01N21/952; Y; Y10; Y10S; Y10S209/00; Y10S209/915
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
AN AUTOMATIC SURFACE INSPECTION DEVICE COMPRISING TWO SLIGHTLY SKEWED ROLLERS WITH MEANS FOR ROTATING THE ROLLERS IN THE SAME DIRECTION, MEANS FOR DIRECTING A BEAM OF LIGHT ONTO A ROTATABLE WORKPIECE ON THE ROLLERS AND A LIGHT CONDUCTING MEANS HAVING A SMALL LIGHT RECEIVING AREA FROM AN ACCEPTABLE SURFACES, ELECTRICAL MEANS CONNECTED TO SAID LIGHT CONDUCTING MEANS FOR CONVERTING THE RECEIVED LIGHT INTO AN ELECTRICAL SIGNAL FOR SELECTING OR REJECTING THE ARTICLE, AN ARTICLE HOLDING MEANS AT THE DISCHARGE END OF THE ROLLERS, MEANS CONNECTED TO SAID ELECTRICAL MEANS AND OPERATED IN RESPONSE TO THE ELECTRICAL SIGNAL FOR MOVING SAID ARTICLE IN DIFFERENT DIRECTIONS DEPENDING UPON THE PRESENCE OF DETECTED FLAWS.
Claim 2
Dependent Claim
111 words
AN AUTOMATIC SURFACE INSPECTION DEVICE COMPRISING TWO SLIGHTLY SKEWED ROLLERS WITH MEANS FOR ROTATING THE ROLLERS IN THE SAME DIRECTION, MEANS FOR DIRECTING A BEAM OF LIGHT ONTO A ROTATABLE WORKPIECE ON THE ROLLERS AND A LIGHT CONDUCTING MEANS HAVING A SMALL LIGHT RECEIVING AREA FROM AN ACCEPTABLE SURFACES, ELECTRICAL MEANS CONNECTED TO SAID LIGHT CONDUCTING MEANS FOR CONVERTING THE RECEIVED LIGHT INTO AN ELECTRICAL SIGNAL FOR SELECTING OR REJECTING THE ARTICLE, AN ARTICLE HOLDING MEANS AT THE DISCHARGE END OF THE ROLLERS, MEANS CONNECTED TO SAID ELECTRICAL MEANS AND OPERATED IN RESPONSE TO THE ELECTRICAL SIGNAL FOR MOVING SAID ARTICLE IN DIFFERENT DIRECTIONS DEPENDING UPON THE PRESENCE OF DETECTED FLAWS.
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) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |