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The ornamental design for a crown bit, as shown and described.
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FIG. 1 is a perspective view of a crown bit according to the present design;
FIG. 2 is a perspective view of a crown bit according to an alternative embodiment of the present design;
FIG. 3 is a top plan view of the crown bits of FIGS. 1 and 2;
FIG. 4 is a bottom plan view of the crown bits of FIGS. 1 and 2;
FIG. 5 is a right side elevation view of the crown bits of FIGS. 1 and 2; and
FIG. 6 is a front side elevation view of the crown bits of FIGS. 1 and 2; and,
FIG. 7 is a perspective view of the crown bits of FIGS. 1 and 2 and a drill bit, wherein the broken lines illustrate components that form no part of the design.
The broken lines in the figures are for illustrative purposes only and form no part of the claimed design.
Charland, Luc, Charland, Roger
Patent | Priority | Assignee | Title |
D541831, | Jun 03 2005 | Kabushiki Kaisha Miyanaga | Hole cutter |
Patent | Priority | Assignee | Title |
4128136, | Dec 09 1977 | Lamage Limited | Drill bit |
4211294, | Apr 21 1978 | Acker Drill Company, Inc. | Impregnated diamond drill bit |
4681174, | Jan 16 1986 | KAZAKHSKY POLITEKHNICHESKY INSTITUT IMENI V I | Diamond crown bit |
5322139, | Jul 28 1993 | Loose crown underreamer apparatus | |
6702650, | May 09 2000 | 3M Innovative Properties Company | Porous abrasive article having ceramic abrasive composites, methods of making, and methods of use |
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