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Patent
D557297
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Priority
Mar 22 2007
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Filed
Mar 22 2007
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Issued
Dec 11 2007
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Expiry
Dec 11 2021
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Assg.orig
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Entity
unknown
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0
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11
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n/a
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The ornamental design for a mining core chock, as shown and described.
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FIG. 1 is a perspective view of the mining core chock looking from above and from right to left.
FIG. 2 is a perspective view of the mining core chock looking from below and from left to right.
FIG. 3 is a front elevation view of FIG. 1.
FIG. 4 is a rear elevation view of FIG. 2.
FIG. 5 is a top plan view of FIGS. 3 or 4;
FIG. 6 is a bottom plan view of FIGS. 3 or 4.
FIG. 7 is a left side view of FIG. 3; and,
FIG. 8 is a right side view of FIG. 3.
Evans, Donald L.
Patent |
Priority |
Assignee |
Title |
Patent |
Priority |
Assignee |
Title |
1576846, |
|
|
|
3858690, |
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|
|
3991579, |
Nov 30 1973 |
Mines de Potasse d'Alsace S.A. |
Self advancing support chocks |
4041714, |
Sep 26 1975 |
Gullick Dobson Limited |
Mine roof supports |
4154038, |
Jun 06 1977 |
Bethlehem Steel Corporation |
Pedestal head for floor-supporting post |
4557290, |
Nov 25 1983 |
BENNES MARRELL, ZONE INDUSTRIELLE SUD, ANDREZIEUX BOUTHEON-LOIRE-FRANCE, A CORP OF FRANCE |
Hydraulic slide control safety valve for a mine support jack |
4688968, |
Jun 20 1985 |
BENNES MARREL, ZONE INDUSTRIELLE SUD, ANDREZIEUX BOUTHEON, LOIRE, FRANCE, A CORP OF FRANCE |
Chock block skidding device designed for the powered supports used in the mines |
4917219, |
Nov 26 1985 |
CHECKERS INDUSTRIAL PRODUCTS, INC |
Wheel chock |
5681021, |
Jun 27 1995 |
|
Roof jack with bracket |
6978865, |
Feb 02 2001 |
Safety Chock Systems International Incorporated |
Safety chock |
20070051923, |
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
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Maintenance Fee Events |
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Maintenance Schedule |
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