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2025
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G/S
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Air powered tools, namely, namely, drills and drill bits for use in the oil and gas industry, fou... |
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2024
|
Invention
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Down-the-hole drill hammer having a coaxial accumulator.
A down-the-hole drill hammer comprising... |
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Invention
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Down-the-hole hammer having an inverted casing. A down-the-hole drill hammer comprising a casing ... |
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Invention
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Down-the-hole hammer having an inverted casing.
A down-the-hole drill hammer comprising a casing... |
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Invention
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Down-the-hole drill hammer having a piston follower valve. A down-the-hole drill hammer (10) incl... |
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Invention
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Down-the-hole drill hammer having a piston follower valve.
A down-the-hole drill hammer includin... |
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2023
|
Invention
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Underreamer drill hammer. An underreamer drill hammer comprising a canister including a housing h... |
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Invention
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Down-the-hole drill hammer having a ribbed exhaust tube. A down-the-hole hammer comprising a hous... |
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2020
|
G/S
|
Air powered drilling tools, namely, drills and hole openers, used in the oil, gas, foundation dri... |
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2018
|
Invention
|
Flow diversion sub for a down-the-hole drill hammer. A flow diversion sub for a down-the-hole dri... |
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2017
|
Invention
|
Down-the-hole drill hammer having a roller bearing assembly. A down-the-hole drill hammer is prov... |
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|
Invention
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Non-rotating drill bit for a down-the-hole drill hammer |
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|
Invention
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Drill bit for a down-the-hole drill hammer |
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2016
|
Invention
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Down-the-hole drill hammer having a roller ramp clutch. A down-the-hole drill hammer is provided ... |
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2015
|
Invention
|
Drill bit for a down-the-hole drill hammer having spirally arranged cutting inserts. A drill bit ... |
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2014
|
Invention
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Pressure control check valve for a down-the-hole drill hammer. A down-the-hole drill hammer for o... |
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2013
|
G/S
|
Air powered drilling tools, namely, drills and hole openers used in the oil, gas, foundation dril... |
|
|
Invention
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Non-rotating drill bit for a down-the-hole drill hammer. A non-rotational drill bit for a down-th... |
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2012
|
G/S
|
Air powered tools, namely, down the hole hammers used in the oil and gas, foundation drilling, wa... |
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G/S
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Down hole air hammer driven under reamer used to simultaneously drill and case a bore hole for th... |
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2011
|
G/S
|
Air powered percussion earth boring drills; percussion drill bits |
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Invention
|
Drill bit |
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|
Invention
|
Down-the-hole drill hammer having an extendable drill bit assembly. A down-the-hole drill hammer ... |
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2010
|
Invention
|
Down-the-hole drill hammer having a reverse exhaust system and segmented chuck assembly. A down-t... |
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|
Invention
|
Down-the-hole drill hammer having a sliding exhaust check valve. A down-the-hole drill hammer hav... |
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|
Invention
|
Pressure reversing valve assembly for a down-the-hole percussive drilling apparatus. A pressure r... |
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|
Invention
|
Down-the-hole drill reverse exhaust system. A DHD hammer that can exhaust working air volumes par... |
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|
Invention
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Down-the-hole drill reverse exhaust system.
A DHD hammer that can exhaust working air... |
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2009
|
Invention
|
Self-indexing down-the-hole drill. A down-the-hole drill (DHD) hammer having a casing, a drill bi... |
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|
Invention
|
Down-the-hole drill drive coupling. A down-the-hole drill hammer is provided that includes a hous... |
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|
Invention
|
Down-the-hole drill drive coupling.
A down-the-hole drill hammer is provided that incl... |
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2007
|
G/S
|
air powered drilling tools, namely, drills and hole openers, used in the oil, gas, foundation dri... |
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2002
|
Invention
|
Self-retaining downhole-hammer drill bit. The present invention relates to a downhole-hammer dril... |
