Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Construction
Class Information
Number: 175/247
Name: Boring or penetrating the earth > With means movable relative to tool to receive, retain, or sever undisturbed core > Receiver removable through below-ground tool shaft > With fluid pressure-responsive means to remove receiver or operate latch
Description: Apparatus in which (1) a fluid pressure operated means or surface is provided to move a core receiver toward above ground or (2) a means latching the core barrel in the tool shaft is actuated to engaged or released position by fluid pressure.










Patents under this class:

Patent Number Title Of Patent Date Issued
8333255 High productivity core drilling system Dec. 18, 2012
6708784 Core barrel valve assembly Mar. 23, 2004
6019181 Core drilling latch assembly Feb. 1, 2000
5992543 Core drilling latch assembly Nov. 30, 1999
5592994 Propulsion seal for wire line core drilling apparatus Jan. 14, 1997
4832138 Device to control the locking of a boring corer May. 23, 1989
4588036 Continuous, undisturbed sampling by rotational boring in non-plastic granular tills May. 13, 1986
4573539 Hydraulically pulsed indexing system for sleeve-type core barrels Mar. 4, 1986
4452321 Device in core barrels Jun. 5, 1984











 
 
  Recently Added Patents
Catalysts and process for producing aldehydes
Dual source mass spectrometry system
Automobile body
Authorization method for location based services
Extensible, filtered lists for mobile device user interface
Photoacoustic joulemeter utilizing beam deflection technique
Image reproduction system and image reproduction processing program
  Randomly Featured Patents
Semiconductor device comprising fully-depleted and partially-depleted FinFETs
Quantitative measuring system for combustible gas with audible tick rate
Process for the preparation of barium sulfate of increased flowability and density, suitable as a radio-opaque component in radiographic contrast agents, product obtained according to this pro
Method for performing a medium access control address lookup in a network switch of an ethernet network
Artificial disc
Process for manufacturing cathode ray tube
Seed and stitch approach to embedded arrays
Tooth shade analyzer system and methods
Imidazoquinazoline derivative, process for preparing the same, and organic electronic device using the same
Self-forming top anti-reflective coating compositions and, photoresist mixtures and method of imaging using same