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Class Information
Number: 175/312
Name: Boring or penetrating the earth > With receptacle > Sieve or strainer
Description: Apparatus in which the receptacle is either porous or is provided with apertures.

Patents under this class:

Patent Number Title Of Patent Date Issued
8689878 Junk basket with self clean assembly and methods of using same Apr. 8, 2014
8517122 Air/water separator and methods of use thereof Aug. 27, 2013
7478687 Coiled tubing conveyed milling Jan. 20, 2009
7275606 Solids strainer system for a hydraulic choke Oct. 2, 2007
7243742 Drill pipe screen Jul. 17, 2007
7188687 Downhole filter Mar. 13, 2007
7188688 Down-hole tool filter and method for protecting such tools from fluid entrained debris Mar. 13, 2007
6981561 Downhole cutting mill Jan. 3, 2006
6715570 Two stage downhole drilling fluid filter Apr. 6, 2004
6431292 Device for drilling and draining holes in soil or rock Aug. 13, 2002
6276452 Apparatus for removal of milling debris Aug. 21, 2001
5682950 Means for collecting unwanted material in an oil or gas well Nov. 4, 1997
5176208 Reverse circulation tool handling cuttings and debris Jan. 5, 1993
4341273 Rotary bit with jet nozzles Jul. 27, 1982
4336850 Internal fluid screen to prevent nozzle and port plugging Jun. 29, 1982
4189012 Earth boring tool Feb. 19, 1980
4060140 Method and apparatus for preventing debris build-up in underwater oil wells Nov. 29, 1977

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