US3857744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing composite articles containing boron carbide
Assignee: Coors Porcelain Co
•
Filing: 1970-01-19
•
Granted: 1974-12-31
•
Expires: 1990-01-19
Abstract
Abstract In accordance with the invention, a composite silicon impregnated boron carbide body bonded to a backing material for said body is manufactured by forming a boron carbide powder compact of the desired shape and size, coating a surface of the compact with boron nitride powder, impregnating the boron nitride coated boron carbide powder compact with silicon, removing from the surface of said body at least most of the boron nitride layer and any silicon deposited thereon, and then bonding the silicon impregnated boron carbide body to the organic resin backing material.
Inventors
- 👤 J Moss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:44
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/56; C04B35/563; F; F41; F41H; F41H5/00; F41H5/02; Y; Y10; Y10T; Y10T156/00; Y10T156/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
82 words
IN A METHOD FOR MANUFACTURING AN IMPREGNATED CARBIDE BODY WHEREIN A COMPACT OF CARBIDE POWDER IS CONTACTED WITH MOLTEN IMPREGNANT SELECTED FROM THE GROUP CONSISTING OF THE METALS AND SILICON TO CAUSE THE IMPREGNATION OF SAID BODY WITH SAID IMPREGNANT, THE IMPROVEMENT WITH COMPRISES APPLYING TO A SURFACE OF SAID COMPACT, PRIOR TO CONTACTING SAID COMPACT WITH SAID MOLTEN IMPREGNANT, A MATERIAL WHICH IS NOT WETTED BY SAID MOLTEN IMPREGNANT, SAID MATERIAL THEREBY INHIBITING THE ADHERENCE OF SAID IMPREGNANT TO SAID SURFACE.
Claim 2
Dependent Claim
82 words
IN A METHOD FOR MANUFACTURING AN IMPREGNATED CARBIDE BODY WHEREIN A COMPACT OF CARBIDE POWDER IS CONTACTED WITH MOLTEN IMPREGNANT SELECTED FROM THE GROUP CONSISTING OF THE METALS AND SILICON TO CAUSE THE IMPREGNATION OF SAID BODY WITH SAID IMPREGNANT, THE IMPROVEMENT WITH COMPRISES APPLYING TO A SURFACE OF SAID COMPACT, PRIOR TO CONTACTING SAID COMPACT WITH SAID MOLTEN IMPREGNANT, A MATERIAL WHICH IS NOT WETTED BY SAID MOLTEN IMPREGNANT, SAID MATERIAL THEREBY INHIBITING THE ADHERENCE OF SAID IMPREGNANT TO SAID SURFACE.
Claim 3
Dependent Claim
14 words
A method as set forth in claim 1 wherein said material is boron nitride.
Claim 4
Dependent Claim
14 words
A method as set forth in claim 1 wherein said carbide is boron carbide.
Claim 5
Dependent Claim
13 words
A method as set forth in claim 1 wherein said impregnant is silicon.
Claim 6
Dependent Claim
20 words
A method as set forth in claim 1 wherein after said impregnation an organic resin is bonded to said surface.
Claim 7
Dependent Claim
27 words
A method as set forth in claim 1 wherein at least most of said material is removed from said surface prior to bonding the organic resin thereto.
Claim 8
Dependent Claim
24 words
A method as set forth in claim 1 wherein said carbide is boron carbide, said impregnant is silicon and said material is boron nitride.
Claim 9
Dependent Claim
24 words
A method as set forth in claim 6 wherein said carbide is boron carbide, said impregnant is silicon and said material is boron nitride.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |