Drill bit for a down-the-hole drill hammer
Latest Center Rock Inc. Patents:
Description
The broken lines in
Claims
The ornamental design for a drill bit for a down-the-hole drill hammer, as shown and described.
Referenced Cited
U.S. Patent Documents
3918538 | November 1975 | Bender |
4073354 | February 14, 1978 | Rowley et al. |
4323130 | April 6, 1982 | Dennis |
4919221 | April 24, 1990 | Pascale |
5890551 | April 6, 1999 | Liljebrand |
6039127 | March 21, 2000 | Myers |
6435288 | August 20, 2002 | Dobran |
D496948 | October 5, 2004 | Charland |
7117939 | October 10, 2006 | Hawley |
7290626 | November 6, 2007 | Terlet |
D611512 | March 9, 2010 | Sundin |
D611970 | March 16, 2010 | Sundin |
D705827 | May 27, 2014 | Hammargren |
D831714 | October 23, 2018 | Osterholm |
20020153174 | October 24, 2002 | Linden |
20040040752 | March 4, 2004 | Brandenberg |
20060060389 | March 23, 2006 | Hadin |
20060162965 | July 27, 2006 | Hadin |
20070137900 | June 21, 2007 | Bjork |
20090321143 | December 31, 2009 | Lyon |
20110240373 | October 6, 2011 | Lyon et al. |
Patent History
Patent number: D872142
Type: Grant
Filed: Oct 18, 2017
Date of Patent: Jan 7, 2020
Assignee: Center Rock Inc. (Berlin, PA)
Inventor: Leland H. Lyon (Roanoke, VA)
Primary Examiner: Patricia A Palasik
Application Number: 29/622,653
Type: Grant
Filed: Oct 18, 2017
Date of Patent: Jan 7, 2020
Assignee: Center Rock Inc. (Berlin, PA)
Inventor: Leland H. Lyon (Roanoke, VA)
Primary Examiner: Patricia A Palasik
Application Number: 29/622,653
Classifications
Current U.S. Class:
Cutting Tool, E.g., Drill Bit, Etc. (D15/139)