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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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Class Information
Number: 175/255
Name: Boring or penetrating the earth > With means movable relative to tool to receive, retain, or sever undisturbed core > Core-retaining or severing means > Sliding wedge type (e.g., slips)
Description: Apparatus in which the retaining or severing means is moved toward the longitudinal axis of the core due to wedge like action upon relative bodily longitudinal sliding movement between surfaces on the retaining or severing means and the tool.










Patents under this class:

Patent Number Title Of Patent Date Issued
8598698 Package substrate with an embedded stiffener Dec. 3, 2013
8485280 Core drilling tools with retractably lockable driven latch mechanisms Jul. 16, 2013
7906843 Substrate having a functionally gradient coefficient of thermal expansion Mar. 15, 2011
7737818 Embedded resistor and capacitor circuit and method of fabricating same Jun. 15, 2010
6116358 Core sampler Sep. 12, 2000
4552229 Externally powered core catcher Nov. 12, 1985
4296822 Multipurpose fluid flow assisted downhole tool Oct. 27, 1981
3964555 Apparatus for obtaining earth cores Jun. 22, 1976











 
 
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