Patents
US 11987889 B2: Boring bit component with hard face wear resistance material with subsequent heat treatment
- Granted
- 2024-05-21
- Filed
- 2020-03-28 application 16833555
- Type
- Utility · 27 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A boring bit or other component for horizontal directional drilling is provided which includes a hard faced layer that is preferably made by a laser cladding bead. A subsequent or post heat treatment is applied to modify the heat affected zone (HAZ) to eliminate or reduce the hard brittle regions and/or softer regions in the base iron or steel material of the HAZ. Further, the hard faced layer may be applied in combination with carbide insert teeth that are embedded within the steel base of the boring bit body, such as by press fitting.
Source: PVGPATDIS, file of 2026-04-10 (ipg240521.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Kondex Corporation 25 patents | US company or organization | Lomira, WI | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Keith A. Johnson | West Bend, WI | 23 | PVGPATDIS, file of 2026-04-10 | |
| Andrew J. Theisen | Fond du Lac, WI | 8 | PVGPATDIS, file of 2026-04-10 | |
| Mark More | West Bend, WI | 4 | PVGPATDIS, file of 2026-04-10 | |
| Casey Placek | Carrer Santiago Rusiñol, WI | 5 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| C23C | Coating metallic material; coating material with metallic material; surface treatment of metallic material by diffusion into the surface, by chemical conversion or substitution; coating by vacuum evaporation, by sputtering, by ion implantation or by chemical vapour deposition, in general | C23C26/00 | PVGPATDIS, file of 2026-04-10 |
| B23K | Soldering or unsoldering; welding; cladding or plating by soldering or welding; cutting by applying heat locally, e.g. flame cutting; working by laser beam | B23K26/34 | PVGPATDIS, file of 2026-04-10 |
| C21D | Modifying the physical structure of ferrous metals; general devices for heat treatment of ferrous or non-ferrous metals or alloys; making metal malleable, e.g. by decarburisation or tempering | C21D6/00 | PVGPATDIS, file of 2026-04-10 |
| C22F | Changing the physical structure of non-ferrous metals and non-ferrous alloys | C22F1/10 | PVGPATDIS, file of 2026-04-10 |
| E21B | Earth or rock drilling; obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells | E21B7/046 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2020-11-24 | Assignment Assignment of assignor's interest | JOHNSON, KEITH A. signed 2020-03-19 MORE, MARK signed 2020-03-19 PLACEK, CASEY signed 2020-03-19 THEISEN, ANDREW J. signed 2020-03-19 | KONDEX CORPORATION LOMIRA, WI | 54459/840 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.