Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Construction
Class Information
Number: 175/319
Name: Boring or penetrating the earth > Below-ground mechanical motion converting means relatively moving plural cutting edges
Description: Apparatus comprising a plurality of cutting edges and a mechanical linkage or gearing which is located below ground and which is connected to the cutting edges to cause the cutting edges to move relative to each other.










Patents under this class:

Patent Number Title Of Patent Date Issued
8616275 Groundwater evaluation tools and methods of groundwater evaluation Dec. 31, 2013
7410013 Boring and drilling apparatus Aug. 12, 2008
6209662 Method of and apparatus for controlling diamond drill feed Apr. 3, 2001
6082453 Orientation device, particularly for drilling tool or a well equipment Jul. 4, 2000
5404959 Drill rig safety shutdown device Apr. 11, 1995
4889194 Method and a device for deep hole drilling Dec. 26, 1989
4627501 Borer head with planetary gearing Dec. 9, 1986
4441761 Mining machine Apr. 10, 1984
4368787 Arrangement for removing borehole cuttings by reverse circulation with a downhole bit-powered pump Jan. 18, 1983
4289210 Impact drill bit actuator Sep. 15, 1981
4159149 Coal mining auger Jun. 26, 1979
4117897 Drill bit Oct. 3, 1978
3945445 Boring apparatus provided with drill bits freely rotatable around their own axis Mar. 23, 1976











 
 
  Recently Added Patents
Probe card holding apparatus with probe card engagement structure
Cucumber plants with a compact growing habit
Wireless communications apparatus and wireless communications method
Alkaline battery
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
Photon density wave based determination of physiological blood parameters
Methods of prognosing a rheumatoid arthritis remission phenotype
  Randomly Featured Patents
Apparatus for the treatment of solid, liquid and/or gaseous materials
Method of fabricating a probe having a field effect transistor channel structure
Holder for a screen enhancement system
Method of producing commercially useful poultry products with increased concentrations of Omega-3 polyunsaturated fatty acids
Semiconductor device and method of forming the same
Support device for nursing bottles and amusement items
Chart recorder
Cigarette packaging method and apparatus
Adjusting acoustic speaker output based on an estimated degree of seal of an ear about a speaker port
Semiconductor device, stacked semiconductor device, methods of manufacturing them, circuit board, and electronic instrument