US3276326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circular hole cutter
Assignee: Individual
•
Filing: 1964-12-21
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Granted: 1966-10-04
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Expires: 1984-12-21
Abstract
No abstract record available.
Inventors
- 👤 Herbert E Gibbons
- 👤 Edward R Stubblefield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:57
CPC Classifications
B; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/48; B23Q1/4804; B23Q1/4809; Y; Y10; Y10T; Y10T408/00; Y10T408/55; Y10T408/83; Y10T408/85; Y10T409/00; Y10T409/30; Y10T409/306216; Y10T409/306384; Y10T409/30644
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A CIRCLE CUTTER FOR USE WITH A POWERED HAND DRILL, COMPRISING: PIVOT MEANS, A JOURNAL BLOCK, A RADIUS ROD BETWEEN SAID PIVOT MEANS AND JOURNAL BLOCK AND ADJUSTABLY CONNECTED SO THAT THE DISTANCE BETWEEN SAID PIVOT MEANS AND JOURNAL BLOCK CAN BE SELECTED, A CUTTER HOLDER JOURNALED IN SAID JOURNAL BLOCK CAPABLE OF FASTENABLY, COAXIALLY, HOLDING A STANDARD END MILL, MEANS FOR CONTROLLING THE POSITION OF SAID CUTTER HOLDER IN SAID JOURNAL BLOCK, AND THEREBY IN TURN SIMULTANEOUSLY CONTROLLING THE PENETRATING DEPTH OF SAID END MILL INTO THE MATERIAL BEING CUT, MEANS FOR CONNECTING A CONVENTIONAL HAND DRILL MOTOR CHUCK TO SAID CUTTER HOLDER, A BEARING SURFACE ON SAID JOURNAL BLOCK CAPABLE OF ENGAGING THE SURFACE OF SAID MATERIAL BEING CUT, AND MEANS FOR PREVENTING THE ACCUMULATION OF CHIPS AROUND THE CUTTER AND FOR PREVENTING SCRATCHING OF THE SURFACE OF THE MATERIAL BEING CUT BY CHIPS BETWEEN SAID BEARING SURFACE AND THE SURFACE OF SAID MATERIAL BEING CUT.
Claim 2
Dependent Claim
158 words
A CIRCLE CUTTER FOR USE WITH A POWERED HAND DRILL, COMPRISING: PIVOT MEANS, A JOURNAL BLOCK, A RADIUS ROD BETWEEN SAID PIVOT MEANS AND JOURNAL BLOCK AND ADJUSTABLY CONNECTED SO THAT THE DISTANCE BETWEEN SAID PIVOT MEANS AND JOURNAL BLOCK CAN BE SELECTED, A CUTTER HOLDER JOURNALED IN SAID JOURNAL BLOCK CAPABLE OF FASTENABLY, COAXIALLY, HOLDING A STANDARD END MILL, MEANS FOR CONTROLLING THE POSITION OF SAID CUTTER HOLDER IN SAID JOURNAL BLOCK, AND THEREBY IN TURN SIMULTANEOUSLY CONTROLLING THE PENETRATING DEPTH OF SAID END MILL INTO THE MATERIAL BEING CUT, MEANS FOR CONNECTING A CONVENTIONAL HAND DRILL MOTOR CHUCK TO SAID CUTTER HOLDER, A BEARING SURFACE ON SAID JOURNAL BLOCK CAPABLE OF ENGAGING THE SURFACE OF SAID MATERIAL BEING CUT, AND MEANS FOR PREVENTING THE ACCUMULATION OF CHIPS AROUND THE CUTTER AND FOR PREVENTING SCRATCHING OF THE SURFACE OF THE MATERIAL BEING CUT BY CHIPS BETWEEN SAID BEARING SURFACE AND THE SURFACE OF SAID MATERIAL BEING CUT.
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |