Patent US4421477A successfully refreshed from Google Patents.
US4421477A
Expired / Lapsed
US
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Combustion wick
Assignee: Panasonic Holdings Corp
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Filing: 1982-04-07
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Granted: 1983-12-20
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Expires: 2002-04-07
Abstract
Abstract A combustion wick comprising a fuel suck-up portion wherein liquid fuel is sucked up and a fuel gasifying portion provided above said fuel suck-up portion is provided wherein of said fuel suck-up and fuel gasifying portions, at least the fuel gasifying portion is formed from silica-alumina type ceramic fibers with an organic binder, with at least a part of said portion being impregnated with a coating material composed principally of an inorganic pigment, silicic anhydride and a surface active agent. By impregnating at least part of the fuel gasifying portion with the coating material, no or little tar-like substance is formed or deposited on the fuel gasifying portion.
Inventors
- 👤 Kinichi Adachi
- 👤 Hisanori Shimoda
- 👤 Yasushi Hirata
- 👤 Yoshimi Ohmukai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:25
CPC Classifications
F; F23; F23D; F23D3/00; F23D3/02; F23D3/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
78 words
A combustion wick comprising a fuel suck-up portion where liquid fuel is sucked up and a fuel gasifying portion provided above said fuel suck-up portion, wherein of said fuel suck-up and fuel gasifying portions, at least the fuel gasifying portion is formed from silica-alumina type ceramic fibers with an organic binder, with at least a part of said portion being impregnated with a coating material composed principally of an inorganic pigment, silicic anhydride and a surface active agent.
Claim 2
Dependent Claim
78 words
A combustion wick comprising a fuel suck-up portion where liquid fuel is sucked up and a fuel gasifying portion provided above said fuel suck-up portion, wherein of said fuel suck-up and fuel gasifying portions, at least the fuel gasifying portion is formed from silica-alumina type ceramic fibers with an organic binder, with at least a part of said portion being impregnated with a coating material composed principally of an inorganic pigment, silicic anhydride and a surface active agent.
Claim 3
Dependent Claim
34 words
The combustion wick according to claim 1, wherein the ceramic fibers in said coating material-impregnated portion are impregnated with a coating material to a pickup of 10 to 150 mg/cm 3 of said fibers.
Claim 4
Dependent Claim
29 words
The combustion wick according to claim 1, wherein the coating material is impregnated in a greater amount in the surface of the gasifying portion than in the inside thereof.
Claim 5
Dependent Claim
25 words
The combustion wick according to claim 1, wherein the amount of the surface active agent in the coating material is 0.2 to 5% by weight.
Claim 6
Dependent Claim
28 words
The combustion wick according to claim 1, wherein the capillaries in most of the coating material-impregnated portion are of a bore within the range of 1 to 10μ.
Claim 7
Dependent Claim
15 words
The combustion wick according to claim 1, wherein the fuel gasifying portion is formed cylindrical.
Claim 8
Dependent Claim
15 words
The combustion wick according to claim 1, wherein the fuel gasifying portion is formed plate-like.
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) | 1986-12-19 | 1987-06-20 | 1987-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-19 | 1991-06-20 | 1991-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-19 | 1995-06-20 | 1995-12-20 | $7700.00 | Window Closed / Lapsed |