| Patent Number |
Title Of Patent |
Date Issued |
| 4274769 |
Impregnated diamond drill bit construction |
June 23, 1981 |
| An impregnated diamond drill bit having a generally cylindrical, hollow crown structure with a lower portion containing diamond particles and a steel shank attached to the crown structure at its upper end. The diamond particles are dispersed within a metal matrix in the lower portion of |
| 4211294 |
Impregnated diamond drill bit |
July 8, 1980 |
| An impregnated diamond drill bit having a crown containing a plurality of diamond particles. The crown is formed from a fused powdered metallic matrix that includes titanium carbide and a nickel-manganese alloy. The diamond particles are dispersed within the metallic matrix which is then |
| 4189015 |
Drill bits for obtaining core samples |
February 19, 1980 |
| A drill bit used for obtaining core samples in concrete or rock formations. The drill bit comprises a cylindrical body having a generally annular-shaped cutting surface at one end and at least one waterway including an inner channel on the interior surface of the body extending to th |
| 3978768 |
Transfer feed system |
September 7, 1976 |
| Apparatus for transporting work over a predetermined path previously requiring a transporting mechanism of a minimal dimension with respect to the corresponding dimension of the path. A transport mechanism is provided for transporting the work over a portion of the path, which transport |
