Down-the-hole drill hammer having a sliding exhaust check valve

Details for Australian Patent Application No. 2011235927 (hide)

Owner Center Rock, Inc.

Inventors Lyon, Leland H.; Lay Warren Thomas

Agent Pizzeys

Pub. Number AU-A-2011235927

Priority 12/909,495 21.10.10 US

Filing date 10 October 2011

Wipo publication date 10 May 2012

International Classifications

E21B 4/14 (2006.01) Drives for drilling, used in the borehole

E21B 1/26 (2006.01) Methods or apparatus for drilling

E21B 10/36 (2006.01) Drilling tools - Percussion drill bits

Event Publications

27 October 2011 Complete Application Filed

  Priority application(s): 12/909,495 21.10.10 US

10 May 2012 Application Open to Public Inspection

  Published as AU-A-2011235927

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