US3213677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flaw detection recording
Assignee: AO Smith Corp
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Filing: 1962-06-28
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Granted: 1965-10-26
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Expires: 1982-06-28
Abstract
No abstract record available.
Inventors
- 👤 Joseph R Maklary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:26
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/04; G01N29/048; G01N2291/00; G01N2291/02; G01N2291/023; G01N2291/0234
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
FLAW DETECTION MARKING APPARATUS FOR APPLYING A MARK ON A METALLIC MEMBER AT THE LOCATION OF A FLAW, WHICH COMPRISES AN ULTRASONIC FLAW DETECTION UNIT ESTABLISHING A SERIES OF TIME SPACED INPUT SONIC PULSES, MEANS TO MOVE THE METALLIC MEMBER PAST THE DETECTION UNIT WHEREBY A SERIES OF FLAW RELATED PULSES OF A WIDTH OF THE ORDER O MICROSECONDS IS ESTABLISHED IN THE PRESENCE OF A FLAW, AN ELECTRONIC TIMING CIRCUIT CONNECTED TO THE OUTPUT OF THE DETECTION UNIT AND INCLUDING MEANS TO ESTABLISH A CONTROL SIGNAL OF AN OPERATIVE DURATION CORRESPONDING TO ABOUT HALF THE PERIOD BETWEEN THE PULSE SIGNALS AND MEANS RESPONSIVE TO SAID CONTROL SIGNAL TO FORM A CONTINUOUS CONTROL SIGNAL DURING THE PERIOD ADJACENT SONIC INPUT PULSES CORRESPONDING FLAW RELATED PULSES, AND AN ELECTRORESPONSIVE MARKING MEANS CONNECTED TO THE OUTPUT OF THE ELECTRONIC TIMING CIRCUIT AND MOUNTED ADJACENT THE PATH OF THE METALLIC MEMBER TO MARK THE METALLIC MEMBER AT THE LOCATION OF A FLAW AND IN PROPORTION TO THE SIZE OF THE FLAW.
Claim 2
Dependent Claim
168 words
FLAW DETECTION MARKING APPARATUS FOR APPLYING A MARK ON A METALLIC MEMBER AT THE LOCATION OF A FLAW, WHICH COMPRISES AN ULTRASONIC FLAW DETECTION UNIT ESTABLISHING A SERIES OF TIME SPACED INPUT SONIC PULSES, MEANS TO MOVE THE METALLIC MEMBER PAST THE DETECTION UNIT WHEREBY A SERIES OF FLAW RELATED PULSES OF A WIDTH OF THE ORDER O MICROSECONDS IS ESTABLISHED IN THE PRESENCE OF A FLAW, AN ELECTRONIC TIMING CIRCUIT CONNECTED TO THE OUTPUT OF THE DETECTION UNIT AND INCLUDING MEANS TO ESTABLISH A CONTROL SIGNAL OF AN OPERATIVE DURATION CORRESPONDING TO ABOUT HALF THE PERIOD BETWEEN THE PULSE SIGNALS AND MEANS RESPONSIVE TO SAID CONTROL SIGNAL TO FORM A CONTINUOUS CONTROL SIGNAL DURING THE PERIOD ADJACENT SONIC INPUT PULSES CORRESPONDING FLAW RELATED PULSES, AND AN ELECTRORESPONSIVE MARKING MEANS CONNECTED TO THE OUTPUT OF THE ELECTRONIC TIMING CIRCUIT AND MOUNTED ADJACENT THE PATH OF THE METALLIC MEMBER TO MARK THE METALLIC MEMBER AT THE LOCATION OF A FLAW AND IN PROPORTION TO THE SIZE OF THE FLAW.
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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |