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Class Information
Number: 175/244
Name: Boring or penetrating the earth > With means movable relative to tool to receive, retain, or sever undisturbed core
Description: Apparatus including a means which, during normal operation, is displaceable or rotatable relative to the working face of a tool, said means being adapted to have physical contact with a core of material such as is formed by a core type bit to (1) accommodate the core as it is formed, (2) grasp the core after it is formed, or (3) cut or break the already formed core from the formation.

Sub-classes under this class:

Class Number Class Name Patents
175/245 Core bit closure relative upwardly movable by core 12
175/249 Core-retaining or severing means 76
175/246 Receiver removable through below-ground tool shaft 59

Patents under this class:

Patent Number Title Of Patent Date Issued
8678109 Intelligent controlled process for well lateral coring Mar. 25, 2014
8662204 Core barrel restraint Mar. 4, 2014
8579049 Drilling system for enhanced coring and method Nov. 12, 2013
8499856 Small core generation and analysis at-bit as LWD tool Aug. 6, 2013
8459374 Easy open liners for soil samplers Jun. 11, 2013
8333255 High productivity core drilling system Dec. 18, 2012
8230950 Multi-purpose scoop Jul. 31, 2012
8176998 Method and device for core drilling May. 15, 2012
7967085 Braking devices for use in drilling operations Jun. 28, 2011
7934568 Rock core removal method and apparatus May. 3, 2011
7828079 Sonic wireline dry slough barrel Nov. 9, 2010
7665542 Core barrel capacity gauge and method Feb. 23, 2010
7380614 Remotely operated water bottom based drilling system using cable for auxiliary operations Jun. 3, 2008
7314101 Inner core barrel head assembly for core tube within a drill string Jan. 1, 2008
7296638 Orientation device for a core sample Nov. 20, 2007
7182155 Locking split barrel sampler and soil sampling system Feb. 27, 2007
7021404 Method and device for deviated coring and/or drilling Apr. 4, 2006
6736224 Drilling system and method suitable for coring and other purposes May. 18, 2004
6708784 Core barrel valve assembly Mar. 23, 2004
6659195 Externally vented drive head with solid center Dec. 9, 2003
6659204 Method and apparatus for recovering core samples under pressure Dec. 9, 2003
6457538 Advanced coring apparatus and method Oct. 1, 2002
6378631 Apparatus for recovering core samples at in situ conditions Apr. 30, 2002
6341656 Core barrel Jan. 29, 2002
6305482 Method and apparatus for transferring core sample from core retrieval chamber under pressure for transport Oct. 23, 2001
6230825 Apparatus for recovering core samples under pressure May. 15, 2001
5980168 Hollow crown drill Nov. 9, 1999
5670717 Method and device for detecting and/or measuring at least one geophysical parameter from a core sample Sep. 23, 1997
5494119 Core sampling device Feb. 27, 1996
5339915 Drilling apparatus, particularly wire line core drilling apparatus Aug. 23, 1994
5310013 Core marking system for a sidewall coring tool May. 10, 1994
5209310 Corebarrel May. 11, 1993
5107942 Inner tube stabilizer for a corebarrel Apr. 28, 1992
5103921 Coring assembly for mounting on the end of a drill string Apr. 14, 1992
4981183 Apparatus for taking core samples Jan. 1, 1991
4950844 Method and apparatus for obtaining a core sample at ambient pressure Aug. 21, 1990
4834198 Positive latch wire line core barrel apparatus May. 30, 1989
4809790 Device for sampling soils and retaining volatiles therein and method of using same Mar. 7, 1989
4735269 Core monitoring device with pressurized inner barrel Apr. 5, 1988
4667753 Core retainer for sidewall core tools May. 26, 1987
4638872 Core monitoring device Jan. 27, 1987
4625813 Method and apparatus for coring in subaqueous structures Dec. 2, 1986
4588036 Continuous, undisturbed sampling by rotational boring in non-plastic granular tills May. 13, 1986
4580643 Adjustable bearing section core barrel Apr. 8, 1986
4498547 Earth soil sampler Feb. 12, 1985
4300643 Double core barrel Nov. 17, 1981

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