Patent US3081635A successfully refreshed from Google Patents.
US3081635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boring tool
Assignee: Individual
•
Filing: 1961-04-21
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Granted: 1963-03-19
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Expires: 1981-04-21
Abstract
No abstract record available.
Inventors
- 👤 Nathan A Bowers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:13
CPC Classifications
B; B23; B23Q; B23Q11/00; B23Q11/0042; B27; B27G; B27G15/00; Y; Y10; Y10T; Y10T408/00; Y10T408/89; Y10T408/895
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A CORE TAKING TOOL COMPRISING A ROTATABLE TUBULAR SHAFT MEMBER, A CUTTING HEAD DRIVEN BY SAID SHAFT MEMBER, SAID CUTTING HEAD HAVING A CENTRAL BORE IN AXIAL ALIGNMENT WITH THE LONGITUDINAL AXIS OF THE TUBULAR SHAFT MEMBER AND APPROXIMATELY THE SAME INTERNAL DIAMETER AS THAT OF THE SAID TUBULAR SHAFT MEMBER, A SCREW CONVEYOR ELEMENT SUPPORTED BY SAID TUBULAR SHAFT MEMBER AND ADAPTED UPON ROTATION TO REMOVE MATERIAL GENERATED BY THE CUTTING HEAD IN CUTTING OF THE CORE, SAID SCREW CONVEYOR ELEMENT BEING ROTATABLE ABOUT THE TUBULAR SHAFT MEMBER INDEPENDENTLY OF ROTATION OF SAID MEMBER.
Claim 2
Dependent Claim
95 words
A CORE TAKING TOOL COMPRISING A ROTATABLE TUBULAR SHAFT MEMBER, A CUTTING HEAD DRIVEN BY SAID SHAFT MEMBER, SAID CUTTING HEAD HAVING A CENTRAL BORE IN AXIAL ALIGNMENT WITH THE LONGITUDINAL AXIS OF THE TUBULAR SHAFT MEMBER AND APPROXIMATELY THE SAME INTERNAL DIAMETER AS THAT OF THE SAID TUBULAR SHAFT MEMBER, A SCREW CONVEYOR ELEMENT SUPPORTED BY SAID TUBULAR SHAFT MEMBER AND ADAPTED UPON ROTATION TO REMOVE MATERIAL GENERATED BY THE CUTTING HEAD IN CUTTING OF THE CORE, SAID SCREW CONVEYOR ELEMENT BEING ROTATABLE ABOUT THE TUBULAR SHAFT MEMBER INDEPENDENTLY OF ROTATION OF SAID MEMBER.
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) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |