Patent US3370489A successfully refreshed from Google Patents.
US3370489A
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US
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Reamer
Assignee: Detroit Reamer and Tool Co
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Filing: 1966-02-09
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Granted: 1968-02-27
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Expires: 1986-02-09
Abstract
No abstract record available.
Inventors
- 👤 Donald C Andreasson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:58
CPC Classifications
B; B23; B23D; B23D77/00; B23D77/006; B23D2277/00; B23D2277/02; B23D2277/68; Y; Y10; Y10T; Y10T407/00; Y10T407/14; Y10T408/00; Y10T408/44; Y10T408/45; Y10T408/458; Y10T408/89; Y10T408/892; Y10T408/8923
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A REAMER COMPRISING: (A) A FLUTED SHANK HAVING AN INTERIOR COOLANT PASSAGE AND EXTERIOR ALTERNATE, AXIALLY EXTENDING FLUTES AND LANDS, EACH LAND HAVING A LEADING CUTTING EDGE AND SAID SHANK BEING TAPERED DOWN AT ONE END FROM A PRIMARY DIAMETER TO A SMALLER SECONDARY DIAMETER, (B) A PILOT AT THE SMALL END OF SAID SHANK HAVING A DIAMETER LESS THAN THE PRIMARY DIAMETER AND HAVING A BLIND, AXIAL RECESS RECEIVING A PORTION OF SAID TAPERED END, SAID FLUTES FORMING, WITH THE WALLS OF SAID RECESS, AXIAL PASSAGES, WHEREIN COOLANT ENTERING SAID RECESS IS REVERSED IN A DIRECTION TO FLOW AXIALLY BACK THROUGH SAID AXIAL PASSAGES INTO SAID FLUTES AND TO SAID CUTTING EDGES TO FLUSH OUT METAL REMOVED IN A REAMING OPERATION.
Claim 2
Dependent Claim
122 words
A REAMER COMPRISING: (A) A FLUTED SHANK HAVING AN INTERIOR COOLANT PASSAGE AND EXTERIOR ALTERNATE, AXIALLY EXTENDING FLUTES AND LANDS, EACH LAND HAVING A LEADING CUTTING EDGE AND SAID SHANK BEING TAPERED DOWN AT ONE END FROM A PRIMARY DIAMETER TO A SMALLER SECONDARY DIAMETER, (B) A PILOT AT THE SMALL END OF SAID SHANK HAVING A DIAMETER LESS THAN THE PRIMARY DIAMETER AND HAVING A BLIND, AXIAL RECESS RECEIVING A PORTION OF SAID TAPERED END, SAID FLUTES FORMING, WITH THE WALLS OF SAID RECESS, AXIAL PASSAGES, WHEREIN COOLANT ENTERING SAID RECESS IS REVERSED IN A DIRECTION TO FLOW AXIALLY BACK THROUGH SAID AXIAL PASSAGES INTO SAID FLUTES AND TO SAID CUTTING EDGES TO FLUSH OUT METAL REMOVED IN A REAMING OPERATION.
References Cited (Backward Citations)
US2867140A
Cited
US3028772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |