Patent
   D557297
Priority
Mar 22 2007
Filed
Mar 22 2007
Issued
Dec 11 2007
Expiry
Dec 11 2021
Assg.orig
Entity
unknown
0
11
n/a
The ornamental design for a mining core chock, as shown and described.

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,
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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