US3203282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable hole circle drill head
Assignee: Caterpillar Inc
•
Filing: 1963-04-26
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Granted: 1965-08-31
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Expires: 1983-04-26
Abstract
No abstract record available.
Inventors
- 👤 Charles R Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:47
CPC Classifications
B; B23; B23B; B23B39/00; B23B39/16; B23B39/161; Y; Y10; Y10T; Y10T408/00; Y10T408/36; Y10T408/38; Y10T408/3811
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A VARIABLE HOLE CIRCLE DRILL HEAD COMPRISING A HOUSING ING, A BLOCK IN THE HOUSING, A PLURALITY OF CYLINDRICAL MEMBERS ROTATABLE IN THE BLOCK AND HAVING PERIPHERALLY DISPOSED GEAR TEETH, THE DRILL SPINDLE CARRIED ECCENTRICALLY OF EACH CYLINDRICAL MEMBER, THE AXES OF SAID CYLINDRICAL MEMBERS BEING DISPOSED IN A CIRCULAR PATTERN, A CENTRALLY DISPOSED ROTATABLE CONTROL MEMBER, AND A GEAR ON SAID CONTROL MEMBER MESHING WITH THE GEAR TEETH ON ALL OF SAID CYLINDRICAL MEMBERS WHEREBY ROTATION OF THE CONTROL MEMBER WILL EFFECT RADIAL ADJUSTMENT OF ALL DRILL SPINDLES SIMULTANEOUSLY.
Claim 2
Dependent Claim
90 words
A VARIABLE HOLE CIRCLE DRILL HEAD COMPRISING A HOUSING ING, A BLOCK IN THE HOUSING, A PLURALITY OF CYLINDRICAL MEMBERS ROTATABLE IN THE BLOCK AND HAVING PERIPHERALLY DISPOSED GEAR TEETH, THE DRILL SPINDLE CARRIED ECCENTRICALLY OF EACH CYLINDRICAL MEMBER, THE AXES OF SAID CYLINDRICAL MEMBERS BEING DISPOSED IN A CIRCULAR PATTERN, A CENTRALLY DISPOSED ROTATABLE CONTROL MEMBER, AND A GEAR ON SAID CONTROL MEMBER MESHING WITH THE GEAR TEETH ON ALL OF SAID CYLINDRICAL MEMBERS WHEREBY ROTATION OF THE CONTROL MEMBER WILL EFFECT RADIAL ADJUSTMENT OF ALL DRILL SPINDLES SIMULTANEOUSLY.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |