US4535001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory plastic gunning
Assignee: Plibrico Co LLC
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Filing: 1984-05-29
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Granted: 1985-08-13
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Expires: 2004-05-29
Abstract
Abstract A method of forming a refractory liner comprises the steps of granulating a plastic refractory material and immediately thereafter pneumatically gunning the granulated refractory material onto a job site without the addition of water. An apparatus for gunning a refractory material comprises a granulator, a pneumatic gunning pump and a nozzle. The granulator communicates directly with the pnuematic pump so that granulated plastic refractory material can be pumped and gunned immediately after it is granulated without the addition of water.
Inventors
- 👤 Brian H. Greener
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:09
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/16; F27D1/1636; F27D1/1642; B; B05; B05D; B05D1/00; B05D1/02; B05D1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A method of forming a refractory lining on a surface at a job site comprising the steps of; granulating by means of a granulator at said job site a plastic refractory material having a moisture content in the range of 4% to 16% by weight to provide loosely arranged granular refractory material said granulator directly communicating with a pneumatic gunning pump and immediately after granulating pneumatically gunning the loosely arranged granulated refractory material onto the surface without adding water at the discharge nozzle.
Claim 2
Independent Claim
83 words
A method of forming a refractory lining on a surface at a job site comprising the steps of; granulating by means of a granulator at said job site a plastic refractory material having a moisture content in the range of 4% to 16% by weight to provide loosely arranged granular refractory material said granulator directly communicating with a pneumatic gunning pump and immediately after granulating pneumatically gunning the loosely arranged granulated refractory material onto the surface without adding water at the discharge nozzle.
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) | 1988-08-12 | 1989-02-11 | 1989-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-12 | 1993-02-11 | 1993-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-12 | 1997-02-11 | 1997-08-13 | $7700.00 | Window Closed / Lapsed |