US3831084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Probe with means for selectively permitting a stationary or a helical scan
Assignee: Individual
•
Filing: 1973-04-13
•
Granted: 1974-08-20
•
Expires: 1993-04-13
Abstract
Abstract A helically scanning eddy current flaw detector is disclosed having a housing capable of being affixed to a work piece, a motor and gear train to insert and withdraw the detector from a work piece. A controllable sleeve allows the detector to selectively either follow the helical path or rotate in place and limit switches are provided to change direction or stop the probe when it is run to its limit.
Inventors
- 👤 J Scalese
- 👤 A Rogel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:07
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/72; G01N27/82; G01N27/90; G01N27/9013; G01N27/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
An automatic eddy current flaw deTector comprising in combination: a spindle housing: a spindle, externally threaded, mounted within the spindle housing: a rotatable sleeve internally threaded and adopted to engage the externally threaded spindle and having a plurality of regularly spaced apertures at one end, positioned between the spindle and spindle housing; and in a sliding relationship with the spindle housing, an eddy current probe mounted within the spindle; extension means affixed to one end of the probe; a slip ring assembly affixed to the probe extension for making electrical connection thereto; a solenoid operated plunger affixed to the spindle housing for selectively engaging the said apertures in the rotatable sleeve to control rotation of the sleeve; a drive motor, a gear system connecting the motor to the spindle, and an enclosure means affixed to the spindle housing for covering the drive motor and gear system.
Claim 2
Dependent Claim
146 words
An automatic eddy current flaw deTector comprising in combination: a spindle housing: a spindle, externally threaded, mounted within the spindle housing: a rotatable sleeve internally threaded and adopted to engage the externally threaded spindle and having a plurality of regularly spaced apertures at one end, positioned between the spindle and spindle housing; and in a sliding relationship with the spindle housing, an eddy current probe mounted within the spindle; extension means affixed to one end of the probe; a slip ring assembly affixed to the probe extension for making electrical connection thereto; a solenoid operated plunger affixed to the spindle housing for selectively engaging the said apertures in the rotatable sleeve to control rotation of the sleeve; a drive motor, a gear system connecting the motor to the spindle, and an enclosure means affixed to the spindle housing for covering the drive motor and gear system.
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) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |