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Patents

Referenced by

Citing PatentFiling dateIssue dateOriginal AssigneeTitle
US424443013 Sep 197913 Jan 1981Dresser Industries, Inc.Earth boring bit packed lubrication system
US429527427 Jul 197820 Oct 1981Tennant CompanyScarifying machine
US43336919 Oct 19808 Jun 1982Dresser Industries, Inc.Rotary rock bit with improved thrust flange
US461300520 Jun 198423 Sep 1986Chicago Rawhide Manufacturing Co.Unitized seal for severe service applications
US488006821 Nov 198814 Nov 1989Varel Manufacturing CompanyRotary drill bit locking mechanism
US511189419 Feb 199112 May 1992Sybil J. WilliamsUninterrupted drill bit
US61422482 Apr 19987 Nov 2000Diamond Products International, Inc.Reduced erosion nozzle system and method for the use of drill bits to reduce erosion
US622731523 Mar 19988 May 2001Baker Hughes IncorporatedAir jet earth-boring bit with non-offset cutters