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Class Information
Number: 175/249
Name: Boring or penetrating the earth > With means movable relative to tool to receive, retain, or sever undisturbed core > Core-retaining or severing means
Description: Apparatus in which the movable means comprises a means to grasp or make a cut in the core after it has been formed.










Sub-classes under this class:

Class Number Class Name Patents
175/251 Actuated upon relative movement between tool and tool shaft 16
175/250 Fluid-actuated 32
175/254 Mounted on transverse pivot 7
175/255 Sliding wedge type (e.g., slips) 8
175/253 With element holding retaining or severing means inactive 13


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8684110 Sealed core Apr. 1, 2014
8657037 Drill bit and core retaining device Feb. 25, 2014
8647030 Core drilling system with torque shaft Feb. 11, 2014
8613330 Coring tools and related methods Dec. 24, 2013
8579049 Drilling system for enhanced coring and method Nov. 12, 2013
8550184 Formation coring apparatus and methods Oct. 8, 2013
8453766 Hydrocarbon formation core protection and transportation apparatus Jun. 4, 2013
8430186 Sealed core Apr. 30, 2013
8408332 Coring tool and method Apr. 2, 2013
8365839 Substantially simultaneous core containment, core retrieval and borehole abatement Feb. 5, 2013
8292004 Downhole marking apparatus and methods Oct. 23, 2012
8162080 Apparatus and methods for continuous coring Apr. 24, 2012
8155377 Method for determining rock physics relationships using computer tomographic images thereof Apr. 10, 2012
8109347 Core catcher and corer having it Feb. 7, 2012
8081802 Method for determining permeability of rock formation using computer tomograpic images thereof Dec. 20, 2011
8061446 Coring tool and method Nov. 22, 2011
8051925 Core barrel assemblies with braking devices Nov. 8, 2011
8011454 Apparatus and methods for continuous tomography of cores Sep. 6, 2011
7934568 Rock core removal method and apparatus May. 3, 2011
7934569 Core stabilization May. 3, 2011
7913775 Subsurface formation core acquisition system using high speed data and control telemetry Mar. 29, 2011
7878271 Drill bit Feb. 1, 2011
7665542 Core barrel capacity gauge and method Feb. 23, 2010
7431107 Coring bit with uncoupled sleeve Oct. 7, 2008
7347284 Apparatus and method for hard rock sidewall coring of a borehole Mar. 25, 2008
7296638 Orientation device for a core sample Nov. 20, 2007
7216725 Soil sampling system and method that allow headspace screening at spaced intervals without disturbing soil sample May. 15, 2007
7182152 Sampling isolator Feb. 27, 2007
7093676 Apparatus and methods for sponge coring Aug. 22, 2006
6968910 Ultrasonic/sonic mechanism of deep drilling (USMOD) Nov. 29, 2005
6837312 Corer-grinder Jan. 4, 2005
6708784 Core barrel valve assembly Mar. 23, 2004
6695075 Soil sampler Feb. 24, 2004
6681873 Core stabilization apparatus and method therefor Jan. 27, 2004
6505693 Soil sampler Jan. 14, 2003
6443243 Core stabilization apparatus and method therefor Sep. 3, 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
6145604 Core Machine Nov. 14, 2000
5957221 Downhole core sampling and testing apparatus Sep. 28, 1999
5667025 Articulated bit-selector coring tool Sep. 16, 1997
5474140 Soil sampling probe Dec. 12, 1995
5445229 Method and apparatus for drilling, cracking, and withdrawing earth cores Aug. 29, 1995
5439065 Rotary sidewall sponge coring apparatus Aug. 8, 1995
5325930 Overcenter toggle latch apparatus Jul. 5, 1994
5211249 Apparatus and method for obtaining subterranean samples May. 18, 1993
5206505 Apparatus and method for retrieving and evaluating a slim hole drilled core sample of a subsurface formation Apr. 27, 1993
5186263 Soil sample probe Feb. 16, 1993
4989678 Soil sampling kit and a method of sampling therewith Feb. 5, 1991

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