US3346060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary-air-percussion, stabilizer and reamer drill bit of its own true gauge
Assignee: Individual
•
Filing: 1965-12-23
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Granted: 1967-10-10
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Expires: 1985-12-23
Abstract
No abstract record available.
Inventors
- 👤 Beyer Leaman Rex
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:05
CPC Classifications
E; E21; E21B; E21B31/00; E21B31/06; E21B10/00; E21B10/36; E21B10/38; E21B10/46; E21B10/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A ROTARY PERCUSSION BIT HAVING A BODY PORTION HAVING A FLAT BOTTOM FACE, INSERTS OF HARD, WEAR RESISTANT MATERIAL MOUNTED IN SAID BODY PORTION AND PROJECTING DOWNWARDLY FROM SAID FLAT BOTTOM FACE, SAID BODY PORTION HAVING A CONVEXLY CURVED SIDE WALL HAVING OUTWARDLY OPENING GROOVES THEREIN EXTENDING LENGTHWISE THEREOF SAID GROOVES EXTENDING THROUGH SAID FLAT BOTTOM FACE, SAID SIDE WALLS HAVING OUTWARDLY OPENING GROOVES EXTENDING CIRCUMFERENTIALLY THEREOF BETWEEN SAID LENGTHWISE EXTENDING GROOVES AND CONNECTED THEREWITH, SAID LENGTHWISE EXTENDING GROOVES HAVING FLUID INLETS LEADING INTO THE SAME, SAID LENGTHWISE AND CIRCUMFERENTIALLY EXTENDING GROOVES DEFINING CONVEXLY CURVED SIDE WALL PORTIONS SPACED LENGTHWISE OF SAID BIT, AND INSERTS OF HARD, WEAR RESISTANT MATERIAL
Claim 2
Dependent Claim
110 words
A ROTARY PERCUSSION BIT HAVING A BODY PORTION HAVING A FLAT BOTTOM FACE, INSERTS OF HARD, WEAR RESISTANT MATERIAL MOUNTED IN SAID BODY PORTION AND PROJECTING DOWNWARDLY FROM SAID FLAT BOTTOM FACE, SAID BODY PORTION HAVING A CONVEXLY CURVED SIDE WALL HAVING OUTWARDLY OPENING GROOVES THEREIN EXTENDING LENGTHWISE THEREOF SAID GROOVES EXTENDING THROUGH SAID FLAT BOTTOM FACE, SAID SIDE WALLS HAVING OUTWARDLY OPENING GROOVES EXTENDING CIRCUMFERENTIALLY THEREOF BETWEEN SAID LENGTHWISE EXTENDING GROOVES AND CONNECTED THEREWITH, SAID LENGTHWISE EXTENDING GROOVES HAVING FLUID INLETS LEADING INTO THE SAME, SAID LENGTHWISE AND CIRCUMFERENTIALLY EXTENDING GROOVES DEFINING CONVEXLY CURVED SIDE WALL PORTIONS SPACED LENGTHWISE OF SAID BIT, AND INSERTS OF HARD, WEAR RESISTANT MATERIAL
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |