US3106766A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Milling cutter blades
Assignee: Individual
•
Filing: 1960-12-01
•
Granted: 1963-10-15
•
Expires: 1980-12-01
Abstract
No abstract record available.
Inventors
- 👤 Chadderdon Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:55
CPC Classifications
E; E21; E21B; E21B29/00; E21B10/00; Y; Y10; Y10T; Y10T408/00; Y10T408/89; Y10T408/909
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A MILLING CUTTER FOR USE IN WELL BORES COMPRISING, A BODY STRUCTURE, A PLURALITY OF LONGITUDINAL EXTENDING CUTTER BLADES PROJECTING IN A SUBSTANTIALLY RADIAL DIRECTION FROM SAID BODY STRUCTURE AND SPACED AT RADIAL POSITIONS AROUND SAID BODY STRUCTURE, EACH OF SAID CUTTER BLADES BEING DIVIDED TRANSVERSELY INTO A PLURALITY OF SEGMENTS BY A PLURALITY OF LATERAL OPENINGS, EACH OF SAID OPENINGS EXTENDING FROM THE INNER LONGITUDINAL EDGE OF SAID BLADE AND TERMINATING ADJACENT AND SPACED INWARDLY FROM THE OUTER LONGITUDINAL EDGE OF SAID BLADE, EACH OF SAID OPENINGS BEING CIRCULAR IN CROSS SECTION AND HAVING A DIAMETER LESS THAN THE TRANSVERSE DIMENSION OF SAID CUTTER BLADE WHEREBY THE OUTER SURFACE OF THE BLADES IS UNINTERRUPTED TO FORM THE CONNECTION BETWEEN SAID SEGMENTS, EACH OF SAID CUTTER BLADES BEING THEREBY CAPABLE OF WEARING AWAY WHEN SUBJECT TO ATTRITION TO EXPOSE SUCCEEDING SEGMENTS.
Claim 2
Dependent Claim
141 words
A MILLING CUTTER FOR USE IN WELL BORES COMPRISING, A BODY STRUCTURE, A PLURALITY OF LONGITUDINAL EXTENDING CUTTER BLADES PROJECTING IN A SUBSTANTIALLY RADIAL DIRECTION FROM SAID BODY STRUCTURE AND SPACED AT RADIAL POSITIONS AROUND SAID BODY STRUCTURE, EACH OF SAID CUTTER BLADES BEING DIVIDED TRANSVERSELY INTO A PLURALITY OF SEGMENTS BY A PLURALITY OF LATERAL OPENINGS, EACH OF SAID OPENINGS EXTENDING FROM THE INNER LONGITUDINAL EDGE OF SAID BLADE AND TERMINATING ADJACENT AND SPACED INWARDLY FROM THE OUTER LONGITUDINAL EDGE OF SAID BLADE, EACH OF SAID OPENINGS BEING CIRCULAR IN CROSS SECTION AND HAVING A DIAMETER LESS THAN THE TRANSVERSE DIMENSION OF SAID CUTTER BLADE WHEREBY THE OUTER SURFACE OF THE BLADES IS UNINTERRUPTED TO FORM THE CONNECTION BETWEEN SAID SEGMENTS, EACH OF SAID CUTTER BLADES BEING THEREBY CAPABLE OF WEARING AWAY WHEN SUBJECT TO ATTRITION TO EXPOSE SUCCEEDING SEGMENTS.
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) | 1966-10-14 | 1967-04-15 | 1967-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-14 | 1971-04-15 | 1971-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-14 | 1975-04-15 | 1975-10-15 | $7700.00 | Window Closed / Lapsed |