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Class Information
Number: 175/388
Name: Boring or penetrating the earth > Bit or bit element > Bit with leading portion (e.g., pilot) forming smaller diameter initial bore > Leading portion is a screw
Description: Apparatus in which the leading or pilot portion describes a helical convolution, said convolution extending through at least 180°.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7140456 |
Easy hold power auger |
Nov. 28, 2006 |
| 7128174 |
Drilling and anchoring device for diverse applications |
Oct. 31, 2006 |
| 6955234 |
Auger bit |
Oct. 18, 2005 |
| 6824331 |
Screw form anchor device |
Nov. 30, 2004 |
| 6457909 |
Multi-purpose anchor bolt assembly |
Oct. 1, 2002 |
| 6296068 |
Planting system |
Oct. 2, 2001 |
| 6283231 |
Soil displacing screw auger and method for making a concrete pile with this auger |
Sep. 4, 2001 |
| 6073710 |
Combination drilling member |
Jun. 13, 2000 |
| 5476149 |
Pilot bit |
Dec. 19, 1995 |
| 5454435 |
Device for facilitating insertion of a beach umbrella in sand |
Oct. 3, 1995 |
| 4901800 |
Cultivator tool for planting seedlings |
Feb. 20, 1990 |
| 4623025 |
Soil-displacement drill and method for manufacturing a pile |
Nov. 18, 1986 |
| 4496011 |
Tool for forming earth holes having fixed walls and method therefor |
Jan. 29, 1985 |
| 4214617 |
Stump cutter |
Jul. 29, 1980 |
| 4121668 |
Motor-driven cultivator with counter-rotating auger shafts |
Oct. 24, 1978 |
| 4031973 |
Placer mining tool |
Jun. 28, 1977 |
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