US3088253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spherical cutting method
Assignee: Individual
•
Filing: 1959-02-24
•
Granted: 1963-05-07
•
Expires: 1979-02-24
Abstract
No abstract record available.
Inventors
- 👤 Morton S Lipkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:53
CPC Classifications
B; B24; B24D; B24D7/00; B24D7/005
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
119 words
THE METHOD OF MAKING A LARGE-ANGLE SPHERICAL CUT IN A BODY OF HARD AND FRACTURABLE MATERIAL, INCLUDING THE STEPS OF SLOWLY ROTATING A BODY OF THE MATERIAL ABOUT AN AXIS WHILE SUPPORTING ONE AXIAL END AND LEAVING THE OPPOSITE AXIAL END EXPOSED, ROTATING A SPHERICAL CUTTER HAVING A CIRCULAR DIAMOND-BEARING CUTTING EDGE ABOUT AN AXIS INTERSECTING THAT OF SAID BODY AT THE CENTER OF THE SPHERICAL CUT TO BE MADE, STARTING THE CUTTING OPERATION WITH THE CIRCULAR CUTTING EDGE ENCIRCLING THE AXIS OF SAID BODY, AND PROGRESSIVELY CHANGING THE ANGLE BETWEEN SAID AXES WHILE CONTINUING THE ROTATIONS AFORESAID TO FORM THE DESIRED SPHERICAL CUT, AND INTERRUPTING SAID BODY ROTATION BEFORE THE CUTTING EDGE REACHES THE AXIS OF SAID BODY.
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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) | 1966-05-06 | 1966-11-05 | 1967-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-06 | 1970-11-05 | 1971-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-06 | 1974-11-05 | 1975-05-07 | $7700.00 | Window Closed / Lapsed |