US3268259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coal-cutter picks
Assignee: Mining Supplies Minsup Pty Ltd
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Filing: 1963-03-07
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Granted: 1966-08-23
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Expires: 1983-03-07
Abstract
No abstract record available.
Inventors
- 👤 Snipe Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:34
CPC Classifications
E; E21; E21C; E21C35/00; E21C35/18; E21C35/183; E21C35/1837
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A POINT-ATTACK COAL-CUTTER PICK COMPRISING A SHANK AND INTEGRALLY THEREWITH A LENGTHWISE EXTENDING BODY FORMED AT ITS END REMOTE FROM THE SHANK WITH A CO-AXIAL CONICAL SOCKET HAVING AN INCLUDED ANGLE IN THE RANGE OF SUBSTANTIALLY 60* TO 110*, AND A HARD TIP HAVING A CONICAL BASE OF CORRESPONDING INCLUDED ANGLE FOR TRANSMISSION OF THE WORKING THRUST BETWEEN SAID SOCKET AND SAID TIP, SAID TIP BEIG BRAZED CO-AXIALLY IN THE SOCKET AND HAVING A FORWARDLY PROTRUDING POINT CO-AXIAL WITH THE PICK BODY, SAID TIP OCCUPYING THE ENTIRE FRONTAL AREA OF THE FORWARD END OF THE BODY.
Claim 2
Dependent Claim
96 words
A POINT-ATTACK COAL-CUTTER PICK COMPRISING A SHANK AND INTEGRALLY THEREWITH A LENGTHWISE EXTENDING BODY FORMED AT ITS END REMOTE FROM THE SHANK WITH A CO-AXIAL CONICAL SOCKET HAVING AN INCLUDED ANGLE IN THE RANGE OF SUBSTANTIALLY 60* TO 110*, AND A HARD TIP HAVING A CONICAL BASE OF CORRESPONDING INCLUDED ANGLE FOR TRANSMISSION OF THE WORKING THRUST BETWEEN SAID SOCKET AND SAID TIP, SAID TIP BEIG BRAZED CO-AXIALLY IN THE SOCKET AND HAVING A FORWARDLY PROTRUDING POINT CO-AXIAL WITH THE PICK BODY, SAID TIP OCCUPYING THE ENTIRE FRONTAL AREA OF THE FORWARD END OF THE BODY.
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) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |