Hard rock percussion drill bit with paraboloid PCD inserts
Brady August 5, 2
U.S. patent number D574,403 [Application Number D/277,766] was granted by the patent office on 2008-08-05 for hard rock percussion drill bit with paraboloid pcd inserts. This patent grant is currently assigned to The William J. Brady Loving Trust. Invention is credited to William J. Brady.
| United States Patent | D574,403 |
| Brady | August 5, 2008 |
Hard rock percussion drill bit with paraboloid PCD inserts
Claims
CLAIM The ornamental design for a hard rock percussion drill bit with paraboloid PCD inserts, as shown and described.
| Inventors: | Brady; William J. (Creve Coeur, MO) |
|---|---|
| Assignee: | The William J. Brady Loving
Trust (Creve Coeur, MO) |
| Appl. No.: | D/277,766 |
| Filed: | March 9, 2007 |
| Current U.S. Class: | D15/139 |
| Current International Class: | 1509 |
| Field of Search: | ;D8/70 ;D15/21,131,132,138,139 ;76/108 ;175/336,374,389,400,408,409,410,411,414,415,418,419,420 ;279/96,103 |
References Cited [Referenced By]
U.S. Patent Documents
| 2725216 | November 1955 | Brown |
| 3258077 | June 1966 | Phipps |
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| 3955635 | May 1976 | Skidmore |
| 4022287 | May 1977 | Lundstrom |
| 4051912 | October 1977 | White |
| 4106578 | August 1978 | Beyer |
| 4296825 | October 1981 | Larsson |
| 4304312 | December 1981 | Larsson |
| RE30952 | June 1982 | White |
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| 6276467 | August 2001 | Ingmarsson |
| 6655480 | December 2003 | Boyd |
| 6658968 | December 2003 | Linden et al. |
| D496948 | October 2004 | Charland et al. |
| 6938710 | September 2005 | Simmons |
| D524333 | July 2006 | Brady |
| 7325633 | February 2008 | Linden et al. |
| 2001/0003318 | June 2001 | Hulkkonen |
| 2004/0050592 | March 2004 | Carlstrom et al. |
| 2004/0069540 | April 2004 | Kriesels et al. |
| 2005/0161264 | July 2005 | Bjork |
Other References
|
Brunner & Ray Drilling Accessories, catalog, 1997, pp. 1-13, No. 97 DRC, US. cited by other. |
Primary Examiner: Snapp; Sandra
Assistant Examiner: Palasik; Patricia
Attorney, Agent or Firm: Senniger Powers LLP
Description
FIG. 1 is a greatly enlarged side elevational view of a hard rock percussion drill bit embodying the invention.
FIG. 2 is a top plan view thereof.
FIG. 3 is a bottom view thereof.
FIG. 4 is a side elevation thereof, as rotated 90.degree. from the FIG. 1 position, and partially fragmented and broken away to illustrate the interiorly threaded bore at the bottom end; and,
FIG. 5 is a perspective view of thereof.
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