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Class Information
Number: 175/412
Name: Boring or penetrating the earth > Bit or bit element > Plural separable cutter elements
Description: Apparatus in which the bit is provided with two or more cutter elements, said elements being detachably secured to the bit head.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7096982 |
Drill shoe |
Aug. 29, 2006 |
| 6702046 |
Drill device for a drilling apparatus |
Mar. 9, 2004 |
| 6450269 |
Method and bit for directional horizontal boring |
Sep. 17, 2002 |
| 6131675 |
Combination mill and drill bit |
Oct. 17, 2000 |
| 6102142 |
Drilling tool with shock absorbers |
Aug. 15, 2000 |
| 5788430 |
Drilling tool for rotary percussion drilling |
Aug. 4, 1998 |
| 5286144 |
Apparatus and method for cutting a hole in a pipe liner |
Feb. 15, 1994 |
| 5070951 |
Drill for water wells |
Dec. 10, 1991 |
| 5059068 |
Rotary slot cutting tools and insert clamping method |
Oct. 22, 1991 |
| 5010967 |
Milling apparatus with replaceable blades |
Apr. 30, 1991 |
| 4610318 |
Rotary cutter assembly |
Sep. 9, 1986 |
| 4452325 |
Composite structure for cutting tools |
Jun. 5, 1984 |
| 4448270 |
Variable diameter earth boring bit |
May. 15, 1984 |
| 4335794 |
Rotary cone cutter |
Jun. 22, 1982 |
| 4252202 |
Drill bit |
Feb. 24, 1981 |
| 4190126 |
Rotary abrasive drilling bit |
Feb. 26, 1980 |
| 3987859 |
Unitized rotary rock bit |
Oct. 26, 1976 |
| 3982596 |
Drill bit |
Sep. 28, 1976 |
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