US Patent 9938774 Non-rotating drill bit for a down-the-hole drill hammer
Patent 9938774 was granted and assigned to Center Rock on April, 2018 by the United States Patent and Trademark Office.
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Patent abstract
A non-rotational drill bit for a down-the-hole drill hammer is provided that includes a head and a shank extending from the head. The head includes a plurality of axisymmetric cutting members about its working face. The drill bit also includes a porting system that includes a central through hole, an air inlet port, an exhaust outlet port and a central exhaust port for exhausting air from an interior of the drill hammer and for clearing drilling debris from the face of the drill bit.
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Patent Inventor Names
Leland H. Lyon0
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US Patent 09938774 Non-rotating drill bit for a down-the-hole drill hammer US Patent 9938774 Non-rotating drill bit for a down-the-hole drill hammer
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Patent Number
09938774
Patent Number
9938774
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US Patent 09938774 Non-rotating drill bit for a down-the-hole drill hammer
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Is a
Patent applicant
Current assignee
Patent jurisdiction
Patent number
09938774
Date of patent
April 10, 2018
Patent application number
14068121
Date Filed
October 31, 2013
Patent primary examiner
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