Resources Contact Us Home
Browse by Category: Main > Construction
Class Information
Number: 175/253
Name: Boring or penetrating the earth > With means movable relative to tool to receive, retain, or sever undisturbed core > Core-retaining or severing means > With element holding retaining or severing means inactive
Description: Apparatus including a means to positively hold the core retaining or severing means out of core contact position until a certain condition or manipulation takes place, said holding means generally being deactivated upon the formation of a substantial length of core.

Patents under this class:

Patent Number Title Of Patent Date Issued
6394196 Core drill May. 28, 2002
6116358 Core sampler Sep. 12, 2000
5353940 Alignment system for crane works and method of alignment Oct. 11, 1994
5101917 In-place soil sampler Apr. 7, 1992
4946000 Undisturbed soil sampler Aug. 7, 1990
4930587 Coring tool Jun. 5, 1990
4671367 Pole hole digger with percussive core drilling Jun. 9, 1987
4664205 Hydraulic inner barrel in a drill string coring tool May. 12, 1987
4553613 Hydraulic lift inner barrel in a drill string coring tool Nov. 19, 1985
4552229 Externally powered core catcher Nov. 12, 1985
4440240 Method of making holes in the soil and apparatus for performing this method Apr. 3, 1984
4015433 Method for settling anchoring device in the ground Apr. 5, 1977
3949497 Releasable latching apparatus for a benthic grab Apr. 13, 1976

  Recently Added Patents
Discharge lamp comprising coated electrode
Pausing multimedia data streams
Humidity indicator and method for fabricating the same
Coated article and method for making the same
Fuel cell support structure
Dual-box location aware and dual-bitmap voltage domain aware on-chip variation techniques
Optical splitter device
  Randomly Featured Patents
Antireflection coating for ultraviolet light
Portable apparatus for demarcating a region with respect to the ground
Universal, sand dispersion apparatus for motor vehicles
Method for removing microelectronic circuits from substrates and tool used in removal
Pear tree -- Red Winter
Hydroquinone derivatives useful in the production of vitamin E
Packing with a cross channel structure for a material exchange column with a high specific separation performance
System and method for determining air interface information for radio resource management in wireless communications
Embedded fluid mixing device using a homopolar motor
Tunable wavelength multiplexer