Rock bolt

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Description

FIG. 1 is a perspective view of the rock bolt according to the present invention, shown broken away to indicate an indeterminate length.

FIG. 2 is a top plan view of the rock bolt of FIG. 1 according to the present invention; and,

FIG. 3 is a perspective view of a portion of the rock bolt according to the present invention.

Claims

The ornamental design for a rock bolt, as shown and described.

Referenced Cited
U.S. Patent Documents
3227031 January 1966 Williams
3358549 December 1967 Lerich et al.
3379019 April 1968 Williams
4100748 July 18, 1978 Hansen
4619559 October 28, 1986 Norris
D336388 June 15, 1993 Reid
D354905 January 31, 1995 Fitzmyers et al.
5775850 July 7, 1998 Gale et al.
6984091 January 10, 2006 Maltby
7318689 January 15, 2008 Kanflod et al.
7445406 November 4, 2008 Ortlepp
20070269274 November 22, 2007 Seedsman
20070292231 December 20, 2007 Boot
20080038068 February 14, 2008 Craig
Patent History
Patent number: D589335
Type: Grant
Filed: Feb 28, 2008
Date of Patent: Mar 31, 2009
Assignee: Sandvik Intellectual Property AB (Sandviken)
Inventors: John Horsch (New South Wales), Steven Weaver (New South Wales)
Primary Examiner: Holly H Baynham
Assistant Examiner: Sheryl Lane
Attorney: Drinker Biddle & Reath LLP
Application Number: 29/300,170
Classifications
Current U.S. Class: D8/387