US3093366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutter bit holder
Assignee: Austin Hoy and Co Ltd
•
Filing: 1960-09-29
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Granted: 1963-06-11
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Expires: 1980-09-29
Abstract
No abstract record available.
Inventors
- 👤 Proctor Sidney Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:18
CPC Classifications
E; E21; E21C; E21C35/00; E21C35/18; E21C35/19; E21C35/188; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17761; Y10T279/17786
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
IN A COAL CUTTER PICK AND PICK BOX ASSEMBLY OF THE CLASS IN WHICH SAID PICK IS PROVIDED WITH A SHANK FOR LONGITUDINAL RECEPTION AND REMOVAL FROM THE SOCKET OF A PICK BOX, SAID PICK BOX NORMALLY SUPPORTING THE PICK WITH ITS HEAD PROJECTING FROM THE SAID SOCKET, THE COMBINATION WITH SAID ASSEMBLY OF RELEASABLE MEANS FOR SECURING THE PICK IN THE PICK BOX COMPRISING A LATCH MEMBER SLIDABLY GUIDED THROUGH SAID SHANK FOR MOVEMENT INTO AND FROM LATCHING RECEPTION IN A RECESS IN THE WALL OF THE SOCKET, A PLUNGER SPACED FROM SAID LATCH MEMBER AND SLIDABLY GUIDED IN THE HEAD OF THE PICK FOR MOVEMENT PARALLEL TO THE MOVEMENT OF THE LATCH MEMBER, AND MEANS INTERCONNECTING SAID LATCH MEMBER AND PLUNGER FOR MOVEMENT TOGETHER, SAID PICK HEAD BEING FORMED WITH A BORE THERETHROUGH TRANSVERSELY TO SAID PLUNGER, SAID PLUNGER PROJECTING PARTIALLY ACROSS SAID BORE IN THE LATCHED CONDITION OF SAID LATCH MEMBER.
Claim 2
Dependent Claim
154 words
IN A COAL CUTTER PICK AND PICK BOX ASSEMBLY OF THE CLASS IN WHICH SAID PICK IS PROVIDED WITH A SHANK FOR LONGITUDINAL RECEPTION AND REMOVAL FROM THE SOCKET OF A PICK BOX, SAID PICK BOX NORMALLY SUPPORTING THE PICK WITH ITS HEAD PROJECTING FROM THE SAID SOCKET, THE COMBINATION WITH SAID ASSEMBLY OF RELEASABLE MEANS FOR SECURING THE PICK IN THE PICK BOX COMPRISING A LATCH MEMBER SLIDABLY GUIDED THROUGH SAID SHANK FOR MOVEMENT INTO AND FROM LATCHING RECEPTION IN A RECESS IN THE WALL OF THE SOCKET, A PLUNGER SPACED FROM SAID LATCH MEMBER AND SLIDABLY GUIDED IN THE HEAD OF THE PICK FOR MOVEMENT PARALLEL TO THE MOVEMENT OF THE LATCH MEMBER, AND MEANS INTERCONNECTING SAID LATCH MEMBER AND PLUNGER FOR MOVEMENT TOGETHER, SAID PICK HEAD BEING FORMED WITH A BORE THERETHROUGH TRANSVERSELY TO SAID PLUNGER, SAID PLUNGER PROJECTING PARTIALLY ACROSS SAID BORE IN THE LATCHED CONDITION OF SAID LATCH MEMBER.
References Cited (Backward Citations)
US2575980A
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US2907559A
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US2893714A
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US3021124A
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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) | 1966-06-10 | 1966-12-10 | 1967-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-10 | 1970-12-10 | 1971-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-10 | 1974-12-10 | 1975-06-11 | $7700.00 | Window Closed / Lapsed |