Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Construction
Class Information
Number: 175/251
Name: Boring or penetrating the earth > With means movable relative to tool to receive, retain, or sever undisturbed core > Core-retaining or severing means > Actuated upon relative movement between tool and tool shaft
Description: Apparatus in which a relative movement between the tool and tool shaft (1) moves the core retaining or severing means into engagement with the core or (2) releases the core retaining or severing means so that they can move into core engagement.










Sub-classes under this class:

Class Number Class Name Patents
175/252 Relative rotary movement 8


Patents under this class:

Patent Number Title Of Patent Date Issued
7934568 Rock core removal method and apparatus May. 3, 2011
7347284 Apparatus and method for hard rock sidewall coring of a borehole Mar. 25, 2008
7314101 Inner core barrel head assembly for core tube within a drill string Jan. 1, 2008
6732818 Oriented core barrel system May. 11, 2004
6695078 Large diameter sampler for gathering an undisturbed sample Feb. 24, 2004
6425449 Up-hole pump-in core barrel apparatus Jul. 30, 2002
6116358 Core sampler Sep. 12, 2000
5031708 Cockable corebreaker apparatus Jul. 16, 1991
4946000 Undisturbed soil sampler Aug. 7, 1990
4930587 Coring tool Jun. 5, 1990
4887676 Device for closing a core barrel installed in a drilling rig Dec. 19, 1989
4629011 Method and apparatus for taking core samples from a subterranean well side wall Dec. 16, 1986
4606416 Self activating, positively driven concealed core catcher Aug. 19, 1986
4573539 Hydraulically pulsed indexing system for sleeve-type core barrels Mar. 4, 1986
4552229 Externally powered core catcher Nov. 12, 1985
4263975 Device for high-speed boring of stepped post-holes Apr. 28, 1981











 
 
  Recently Added Patents
Terminal device, system and computer readable medium
Identifying conceptually related terms in search query results
System for non-destructive image processing
Adaptive flow for thermal cooling of devices
Low drop-out regulator providing constant current and maximum voltage limit
Semiconductor device
Avoiding conflict in update in distributed environment employing multiple clients
  Randomly Featured Patents
Lidded drum
Top portion of a housing of a mobile device
Thin-film solar module
Retention of heat sinks on electronic packages
Electric motor with bobbin columns to prevent bulging coils
Portion of a floor care appliance
Method and system for controlling an air-to-fuel ratio in a non-stoichiometric power governed gaseous-fueled stationary internal combustion engine
Bellows pump
Compositions for labeling .beta.-amyloid plaques and neurofibrillary tangles
Method for producing wiring board and wiring board