Patent US3909907A successfully refreshed from Google Patents.
US3909907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for installing furnace linings
Assignee: Unifrax I LLC
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Filing: 1974-04-01
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Granted: 1975-10-07
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Expires: 1994-04-01
Abstract
Abstract A method is taught for the installation of insulating lining materials in furnaces, kilns, and the like. The method of this invention comprises applying a flexible ceramic insulation blanket to a surface by impaling said blanket on temporary locating pin means attached to said surface, forming apertures in said blanket at points located by said temporary pin means, removing said temporary pin means, and attaching a ceramic retainer is said aperture to permanently affix said blanket to the surface.
Inventors
- 👤 Joseph Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:28
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/14; F27D1/144; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49764; Y10T29/49778; Y10T29/4978; Y10T29/4981
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
97 words
A method for affixing insulation to a surface comprising the steps of: a. forming apertures in the surface; b. inserting a temporary anchoring device through each aperture; c. securing each said anchoring device to said surface; d. applying insulating material over the temporary anchoring devices; e. forming apertures in said blanket at points located by said anchoring devices; f. removing said temporary anchoring devices from said surface; g. inserting a permanent retainer into said aperture in said blanket; and h. affixing said permanent retainer to said surface by retaining means inserted through said aperture in said surface.
Claim 2
Independent Claim
97 words
A method for affixing insulation to a surface comprising the steps of: a. forming apertures in the surface; b. inserting a temporary anchoring device through each aperture; c. securing each said anchoring device to said surface; d. applying insulating material over the temporary anchoring devices; e. forming apertures in said blanket at points located by said anchoring devices; f. removing said temporary anchoring devices from said surface; g. inserting a permanent retainer into said aperture in said blanket; and h. affixing said permanent retainer to said surface by retaining means inserted through said aperture in said surface.
Claim 3
Dependent Claim
17 words
A Method as set forth in claim 1, wherein said temporary anchoring device comprises a metal pin.
Claim 4
Dependent Claim
16 words
A method as set forth in claim 2, wherein said permanent retainer comprises a refractory material.
Claim 5
Dependent Claim
23 words
A method as set forth in claim 3, wherein said retaining means comprises a bolt threaded into the base of said permanent retainer.
Claim 6
Independent Claim
70 words
A method for the installation of insulating lining materials which comprises applying a flexible ceramic insulation blanket to a surface by impaling said blanket on temporary locating pin means attached to said surface, forming apertures in said blanket at points located by said temporary pin means, removing said temporary pin means, and attaching ceramic retainers in said apertures and to said surface to permanently affix said blanket to the surface.
Claim 7
Independent Claim
70 words
A method for the installation of insulating lining materials which comprises applying a flexible ceramic insulation blanket to a surface by impaling said blanket on temporary locating pin means attached to said surface, forming apertures in said blanket at points located by said temporary pin means, removing said temporary pin means, and attaching ceramic retainers in said apertures and to said surface to permanently affix said blanket to the surface.
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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) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |