US3125883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coring tool
Assignee: —
•
Filing: —
•
Granted: 1964-03-24
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Expires: 1981-03-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:50
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/04; G01N1/08; Y; Y10; Y10T; Y10T408/00; Y10T408/89; Y10T408/895; Y10T83/00; Y10T83/929; Y10T83/9411; Y10T83/9423
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A CORING TOOL FOR SAMPLING BATCHES OF FIBROUS MATERIAL AND THE LIKE COMPRISING A TUBULAR CUTTER HAVING A HELICAL CUTTING EDGE AND MEANS FOR ATTACHING IT TO A ROTOR, CHARACTERIZED IN THAT SAID CUTTING EDGE HAS A HELICAL SHAPE WHICH PROGRESSES FORWARDLY IN THE DIRECTION OPPOSITE TO THE DIRECTION OF ROTATION FROM A LOW POINT TO A HIGH POINT, THE EDGE HAVING A GENERALLY AXIAL SHOULDER FACING IN SAID DIRECTION AT SAID LOW POINT AND THE HELIX PROGRESSING CONTINUOUSLY THROUGHOUT ITS LENGTH.
Claim 2
Dependent Claim
82 words
A CORING TOOL FOR SAMPLING BATCHES OF FIBROUS MATERIAL AND THE LIKE COMPRISING A TUBULAR CUTTER HAVING A HELICAL CUTTING EDGE AND MEANS FOR ATTACHING IT TO A ROTOR, CHARACTERIZED IN THAT SAID CUTTING EDGE HAS A HELICAL SHAPE WHICH PROGRESSES FORWARDLY IN THE DIRECTION OPPOSITE TO THE DIRECTION OF ROTATION FROM A LOW POINT TO A HIGH POINT, THE EDGE HAVING A GENERALLY AXIAL SHOULDER FACING IN SAID DIRECTION AT SAID LOW POINT AND THE HELIX PROGRESSING CONTINUOUSLY THROUGHOUT ITS LENGTH.
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) | 1967-03-24 | 1967-09-23 | 1968-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-24 | 1971-09-23 | 1972-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-24 | 1975-09-23 | 1976-03-24 | $7700.00 | Window Closed / Lapsed |