Patent US4796579A successfully refreshed from Google Patents.
Patent US3124182A successfully refreshed from Google Patents.
US3124182A
Expired / Lapsed
US
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Circle cutter for use with powered hand drills
Assignee: —
•
Filing: —
•
Granted: 1964-03-10
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Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:24
CPC Classifications
B; B27; B27C; B27C1/00; B27C1/007; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/48; B23Q1/4804; B23Q1/4809; Y; Y10; Y10T; Y10T408/00; Y10T408/83; Y10T408/85; Y10T408/86; Y10T408/88; Y10T408/96; Y10T409/00; Y10T409/30; Y10T409/306216; Y10T409/306384; Y10T409/30644
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A CIRCLE CUTTER FOR USE WITH A HAND POWERED DRILL COMPRISING, IN COMBINATION, (A) A BEAM, (B) A PIVOT MEMBER SLIDABLY DISPOSED ON SAID BEAM, (C) LOCKING MEANS FIXING SAID PIVOT MEMBER TO SAID BEAM, (D) A CENTER PIN EXTENDING DOWNWARD FROM SAID PIVOT MEMBER, (E) AN ARBOR SHAFT EXTENDING ROTATABLY AND VERTICALLY THROUGH ONE END OF SAID BEAM, THE UPPER END OF SAID ARBOR SHAFT BEING ENGAGEABLE BY A POWER DRILL, SAID ARBOR SHAFT HAVING AN ENLARGED LOWER PORTION BELOW SAID BEAM, (F) A COLLAR DISPOSED ABOUT SAID SHAFT ABOVE SAID BEAM, SAID COLLAR HAVING MEANS FIXING SAID COLLAR TO SAID SHAFT TO SECURE SAID SHAFT WITHIN SAID BEAM, AND (G) A CUTTING BIT OF SUBSTANTIALLY THE DIAMETER OF SAID CENTER PIN EXTENDING DOWNWARD FROM SAID ARBOR SHAFT BELOW SAID CENTER PIN.
Claim 2
Dependent Claim
133 words
A CIRCLE CUTTER FOR USE WITH A HAND POWERED DRILL COMPRISING, IN COMBINATION, (A) A BEAM, (B) A PIVOT MEMBER SLIDABLY DISPOSED ON SAID BEAM, (C) LOCKING MEANS FIXING SAID PIVOT MEMBER TO SAID BEAM, (D) A CENTER PIN EXTENDING DOWNWARD FROM SAID PIVOT MEMBER, (E) AN ARBOR SHAFT EXTENDING ROTATABLY AND VERTICALLY THROUGH ONE END OF SAID BEAM, THE UPPER END OF SAID ARBOR SHAFT BEING ENGAGEABLE BY A POWER DRILL, SAID ARBOR SHAFT HAVING AN ENLARGED LOWER PORTION BELOW SAID BEAM, (F) A COLLAR DISPOSED ABOUT SAID SHAFT ABOVE SAID BEAM, SAID COLLAR HAVING MEANS FIXING SAID COLLAR TO SAID SHAFT TO SECURE SAID SHAFT WITHIN SAID BEAM, AND (G) A CUTTING BIT OF SUBSTANTIALLY THE DIAMETER OF SAID CENTER PIN EXTENDING DOWNWARD FROM SAID ARBOR SHAFT BELOW SAID CENTER PIN.
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) | 1967-03-10 | 1967-09-09 | 1968-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-10 | 1971-09-09 | 1972-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-10 | 1975-09-09 | 1976-03-10 | $7700.00 | Window Closed / Lapsed |