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Patent US3304837A successfully refreshed from Google Patents.
US3304837A
Expired / Lapsed
US
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Means for quickly changing tools in machine spindles
Assignee: Individual
•
Filing: 1964-12-07
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Granted: 1967-02-21
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Expires: 1984-12-07
Abstract
No abstract record available.
Inventors
- 👤 Perman Gustav Einar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:22
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/113; B23B31/026; B23B31/0261; B23B31/40; B23B31/404; B23B31/4046; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30952
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
208 words
A DEVICE FOR THE RAPID CHANGE OF A TOOL ON A MACHINE SPINDLE, SAID SPINDLE HAVING A TAPERED CENTRAL CAVITY, AN ANNULAR END SURFACE, SCREW HOLES IN SAID END SURFACE AND AT LEAST ONE LATERALLY EXTENDING LUG AND SAID TOOL HAVING A TAPERED END PORTION AND A SHANK PORTION HAVING AN ANNULAR FLANGE AND A GROOVE BELOW SAID FLANGE AND A GAP IN SAID FLANGE OPENING TO SAID GROOVE, SAID DEVICE COMPRISING A NOSE RING HAVING SCREW HOLES ADAPTED TO BE ALINED WITH SAID SCREW HOLES IN SAID END SURFACE AND AT LEAST ONE INTERNAL RECESS ADAPTED TO RECEIVE SAID LUG, SAID NOSE RING HAVING ALSO A RING OF DEPENDING EXTERNALLY THREADED PROJECTIONS BETWEEN SAID SCREW HOLES THEREIN, THE THREADS ON SAID PROJECTIONS BEING ARRANGED IN A CIRCLE OF SMALLER DIAMETER THAN SAID RING, AN INTERNALLY THREADED LOCKING RING ADAPTED TO BE SCREWED ON TO SAID RING OF EXTERNALLY THREADED PROJECTIONS ON SAID NOSE RING, SAID LOCKING RING HAVING AT LEAST ONE INWARDLY EXTENDING PROJECTION ADAPTED TO PASS THROUGH SAID GAP IN SAID FLANGE ON SAID TOOL SHANK AND TO ENGAGE IN SAID ANNULAR GROOVE AND EXTERNAL MARKINGS ON SAID NOSE RING AND SAID LOCKING RING FOR INDICATIN G WHEN SAID LOCKING RING IS IN ITS INITIAL POSITION.
Claim 2
Independent Claim
208 words
A DEVICE FOR THE RAPID CHANGE OF A TOOL ON A MACHINE SPINDLE, SAID SPINDLE HAVING A TAPERED CENTRAL CAVITY, AN ANNULAR END SURFACE, SCREW HOLES IN SAID END SURFACE AND AT LEAST ONE LATERALLY EXTENDING LUG AND SAID TOOL HAVING A TAPERED END PORTION AND A SHANK PORTION HAVING AN ANNULAR FLANGE AND A GROOVE BELOW SAID FLANGE AND A GAP IN SAID FLANGE OPENING TO SAID GROOVE, SAID DEVICE COMPRISING A NOSE RING HAVING SCREW HOLES ADAPTED TO BE ALINED WITH SAID SCREW HOLES IN SAID END SURFACE AND AT LEAST ONE INTERNAL RECESS ADAPTED TO RECEIVE SAID LUG, SAID NOSE RING HAVING ALSO A RING OF DEPENDING EXTERNALLY THREADED PROJECTIONS BETWEEN SAID SCREW HOLES THEREIN, THE THREADS ON SAID PROJECTIONS BEING ARRANGED IN A CIRCLE OF SMALLER DIAMETER THAN SAID RING, AN INTERNALLY THREADED LOCKING RING ADAPTED TO BE SCREWED ON TO SAID RING OF EXTERNALLY THREADED PROJECTIONS ON SAID NOSE RING, SAID LOCKING RING HAVING AT LEAST ONE INWARDLY EXTENDING PROJECTION ADAPTED TO PASS THROUGH SAID GAP IN SAID FLANGE ON SAID TOOL SHANK AND TO ENGAGE IN SAID ANNULAR GROOVE AND EXTERNAL MARKINGS ON SAID NOSE RING AND SAID LOCKING RING FOR INDICATIN G WHEN SAID LOCKING RING IS IN ITS INITIAL POSITION.
References Cited (Backward Citations)
CA600537A
Cited
US2474675A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |