Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Construction
Class Information
Number: 175/233
Name: Boring or penetrating the earth > With means movable relative to tool below ground to stop flow toward bore bottom > Movable to seal sample receiver at bore bottom pressure
Description: Apparatus in which the movable means seals, or cooperates with another means to seal a sample collecting chamber at the pressure which exists at the bottom of the bore.










Patents under this class:

Patent Number Title Of Patent Date Issued
7775276 Method and apparatus for downhole sampling Aug. 17, 2010
6659204 Method and apparatus for recovering core samples under pressure Dec. 9, 2003
6216804 Apparatus for recovering core samples under pressure Apr. 17, 2001
5555945 Early evaluation by fall-off testing Sep. 17, 1996
5482123 Method and apparatus for pressure coring with non-invading gel Jan. 9, 1996
4950844 Method and apparatus for obtaining a core sample at ambient pressure Aug. 21, 1990
4583595 Method and apparatus for obtaining fluid samples in a well Apr. 22, 1986
4356872 Downhole core barrel flushing system Nov. 2, 1982
4317490 Apparatus and method for obtaining a core at in situ pressure Mar. 2, 1982
4258803 Core barrel for obtaining and retrieving subterranean formation samples Mar. 31, 1981
4256192 Pressure core barrel Mar. 17, 1981
4230192 Core sampling apparatus and method Oct. 28, 1980
4142594 Method and core barrel apparatus for obtaining and retrieving subterranean formation samples Mar. 6, 1979











 
 
  Recently Added Patents
Determination and presentation of package pricing offers in response to customer interest in a product
Method for detecting directions of regularity in a two-dimensional image
Piezoelectric device and fabricating method thereof
Sensor apparatus and information processing apparatus
Image processing system and method
Community profiling for social media
Methods, devices and computer program products providing for establishing a model for emulating a physical quantity which depends on at least one input parameter, and use thereof
  Randomly Featured Patents
Adjustable breast positioning system for women's garment
Developing unit and density control method in electrophotography
Joint for the transmission of torque from a first shaft to a second shaft
Apparatus and method for providing a polarization independent optical switch
CMOS imager and method of formation
Sheathing tie down
Method and apparatus for time companding an analog signal
Method and apparatus for producing synthetic resin films
Method and apparatus for operating digital static CMOS components in a very low voltage mode during power-down
N-hydroxacylamino compounds, process for their preparation and pharmaceutical compositions containing them