US2799475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reaming apparatus
Assignee: Texaco Inc
•
Filing: 1953-01-08
•
Granted: 1957-07-16
•
Expires: 1973-01-08
Abstract
No abstract record available.
Inventors
- 👤 Don L Harlan
- 👤 Joseph M Barron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:51
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/18; E21B10/00; E21B10/26; E21B10/32; E21B10/322
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
APPARATUS FOR REAMING A HOLE DRILLED IN THE EARTH COMPRISING A HOLLOW STEM; AN ARM PIVOTALLY MOUNTED AT ONE END THEREOF ON SAID STEM FOR SWINGING MOVEMENT TRANSVERSELY THEREOF IN A FIRST PLANE PARALLEL TO THE LONGITUDINAL AXES OF BOTH SAID STEM AND SAID ARM, SAID ARM HAVING A LONGITUDINAL PASSAGE COMMUNICATING WITH THE INTERIOR OF SAID STEM FOR RECEIVING LIQUID THEREFROM; MEANS FOR MOVING SAID ARM TRANSVERSELY OF SAID STEM; SAID ARM HAVING SCRAPER MEANS CARRIED AT THE OPPOSITE END THEREOF, SAID SCRAPER MEANS COMPRISING A HEAD HAVING A SEGMENTAL SURFACE OF REVOLUTION WHOSE AXIS EXTENDS TRANSVERSELY OF THE LONGITUDINAL AXIS OF SAID ARM, AND A PLURALITY OF TEETH ARRANGED ON SAID SEGMENTAL SURFACE, SAID
Claim 2
Dependent Claim
116 words
APPARATUS FOR REAMING A HOLE DRILLED IN THE EARTH COMPRISING A HOLLOW STEM; AN ARM PIVOTALLY MOUNTED AT ONE END THEREOF ON SAID STEM FOR SWINGING MOVEMENT TRANSVERSELY THEREOF IN A FIRST PLANE PARALLEL TO THE LONGITUDINAL AXES OF BOTH SAID STEM AND SAID ARM, SAID ARM HAVING A LONGITUDINAL PASSAGE COMMUNICATING WITH THE INTERIOR OF SAID STEM FOR RECEIVING LIQUID THEREFROM; MEANS FOR MOVING SAID ARM TRANSVERSELY OF SAID STEM; SAID ARM HAVING SCRAPER MEANS CARRIED AT THE OPPOSITE END THEREOF, SAID SCRAPER MEANS COMPRISING A HEAD HAVING A SEGMENTAL SURFACE OF REVOLUTION WHOSE AXIS EXTENDS TRANSVERSELY OF THE LONGITUDINAL AXIS OF SAID ARM, AND A PLURALITY OF TEETH ARRANGED ON SAID SEGMENTAL SURFACE, SAID
References Cited (Backward Citations)
US162163A
Cited
US973752A
Cited
US1427944A
Cited
US1559761A
Cited
US1739206A
Cited
US1908174A
Cited
US2069482A
Cited
US2072859A
Cited
US2284170A
Cited
US2251916A
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US2234451A
Cited
US2324682A
Cited
US2285213A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-15 | 1961-01-14 | 1961-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-15 | 1965-01-14 | 1965-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-15 | 1969-01-14 | 1969-07-16 | $7700.00 | Window Closed / Lapsed |