US3256043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Releasable engagement means for cutter bits
Assignee: Cincinnati Mine Machinery Co
•
Filing: 1961-08-25
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Granted: 1966-06-14
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Expires: 1981-08-25
Abstract
No abstract record available.
Inventors
- 👤 Claude B Krekeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:40
CPC Classifications
E; E21; E21C; E21C35/00; E21C35/18; E21C35/19; Y; Y10; Y10T; Y10T279/00; Y10T279/23; Y10T407/00; Y10T407/19; Y10T407/1904; Y10T407/22; Y10T407/2272; Y10T407/28; Y10T408/00; Y10T408/55; Y10T408/554; Y10T408/94; Y10T408/95
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
IN A CUTTER BIT AND SOCKET MEMBER ARRANGEMENT COMPRISING A SOCKET MEMBER HAVING AN ELONGATED SHANK RECEIVING PERFORATION THEREIN, AND A CUTTING MEMBER HAVING AN ELONGATED SHANK ADAPTED TO ENTER SAID PERFORATION AND MAGNETIC ENGAGEMENT MEANS IN CONNECTION WITH ONE OF SAID ELEMENT AND ACTING UPON THE OTHER OF SAID ELEMENTS TO RETAIN SAID SHANK IN SAID PERFORATION, SAID MAGNETIC ENGAGEMENT MEANS COMPRISING A BAR MAGNETIC WITH ITS AXIS TRANSVERSE THE AXIS OF SAID PREFORATION AND THE AXIS OF SAID SHANK, SAID BAR MAGNET BEING LOCATED INTERMEDIATE THE ENDS OF SAID PERFORATION AND SHANK.
Claim 2
Dependent Claim
94 words
IN A CUTTER BIT AND SOCKET MEMBER ARRANGEMENT COMPRISING A SOCKET MEMBER HAVING AN ELONGATED SHANK RECEIVING PERFORATION THEREIN, AND A CUTTING MEMBER HAVING AN ELONGATED SHANK ADAPTED TO ENTER SAID PERFORATION AND MAGNETIC ENGAGEMENT MEANS IN CONNECTION WITH ONE OF SAID ELEMENT AND ACTING UPON THE OTHER OF SAID ELEMENTS TO RETAIN SAID SHANK IN SAID PERFORATION, SAID MAGNETIC ENGAGEMENT MEANS COMPRISING A BAR MAGNETIC WITH ITS AXIS TRANSVERSE THE AXIS OF SAID PREFORATION AND THE AXIS OF SAID SHANK, SAID BAR MAGNET BEING LOCATED INTERMEDIATE THE ENDS OF SAID PERFORATION AND SHANK.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |