US3024128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coating metal article with hard particles
Assignee: Dawson Armoring Co
•
Filing: 1955-11-14
•
Granted: 1962-03-06
•
Expires: 1975-11-14
Abstract
No abstract record available.
Inventors
- 👤 Chester H Dawson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:12
CPC Classifications
C; C23; C23C; C23C24/00; C23C24/08; C23C24/10; C23C24/103
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
THE METHOD OF APPLYING TO A SELECTED PORTION OF A FERROUS TOOL A HARD SURFACE CONFORMING TO THE SHAPE OF SAID TOOL WHICH COMPRISES FIRST APPLYING TO SAID PORTION OF THE TOOL A LIQUID ORGANIC BINDER HAVING THE PROPERTY OF ADHESION AND THEN A LAYER OF POWDERED MATERIAL OVER THE BINDER, SAID MATERIAL BEING HELD IN PLACE BY THE LIQUID ORGANIC BINDER, SAID MATERIAL COMPRISING A METALLIC MATRIX AND A CARBIDE SELECTED FROM THE GROUP CONSISTING OF THE CARBIDES OF SILICON, TUNGSTEN, MOLYBDENUM, CHROMIUM, TANTALUM, NIOBIUM, VANADIUM, TITANIUM, ZIRCONIUM, AND BORON, AND THEN HEATING THE COATED TOOL SURFACE WHILE IN CONTACT WITH A CARBURIZING ATMOSPHERE AT A TEMPERATURE AND FOR A PERIOD OF TIME SUFFICIENT TO REACH THE SWEATING POINT OF THE BASE METAL AS COATED, WHEREUPON THERE IS A FUSION OF THE MATRIX OF THE SURFACE LAYER AND SAID FERROUS TOOL PORTION AT THE INTERFACE, AND THEREAFTER ALLOWING SAID COATED TOOL PORTION TO COOL WHEREBY SAID CARBIDE COMPONENT AND SAID TOOL ARE TIGHTLY BONDED TOGETHER.
Claim 2
Independent Claim
166 words
THE METHOD OF APPLYING TO A SELECTED PORTION OF A FERROUS TOOL A HARD SURFACE CONFORMING TO THE SHAPE OF SAID TOOL WHICH COMPRISES FIRST APPLYING TO SAID PORTION OF THE TOOL A LIQUID ORGANIC BINDER HAVING THE PROPERTY OF ADHESION AND THEN A LAYER OF POWDERED MATERIAL OVER THE BINDER, SAID MATERIAL BEING HELD IN PLACE BY THE LIQUID ORGANIC BINDER, SAID MATERIAL COMPRISING A METALLIC MATRIX AND A CARBIDE SELECTED FROM THE GROUP CONSISTING OF THE CARBIDES OF SILICON, TUNGSTEN, MOLYBDENUM, CHROMIUM, TANTALUM, NIOBIUM, VANADIUM, TITANIUM, ZIRCONIUM, AND BORON, AND THEN HEATING THE COATED TOOL SURFACE WHILE IN CONTACT WITH A CARBURIZING ATMOSPHERE AT A TEMPERATURE AND FOR A PERIOD OF TIME SUFFICIENT TO REACH THE SWEATING POINT OF THE BASE METAL AS COATED, WHEREUPON THERE IS A FUSION OF THE MATRIX OF THE SURFACE LAYER AND SAID FERROUS TOOL PORTION AT THE INTERFACE, AND THEREAFTER ALLOWING SAID COATED TOOL PORTION TO COOL WHEREBY SAID CARBIDE COMPONENT AND SAID TOOL ARE TIGHTLY BONDED TOGETHER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-05 | 1965-09-04 | 1966-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-05 | 1969-09-04 | 1970-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-05 | 1973-09-04 | 1974-03-06 | $7700.00 | Window Closed / Lapsed |