US3597668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic charger for liquid fuel by friction
Assignee: Individual
•
Filing: 1969-10-16
•
Granted: 1971-08-03
•
Expires: 1989-10-16
Abstract
Abstract A static charger for electrostatically charging liquid fuel comprises a friction element adapted to be installed within a fuel feed pipe adjacent the carburetor of an internal combustion engine. The friction element comprises a metal sheet or mesh rolled into a roll around a core and frictionally contacts the liquid fuel thereby electrostatically charging the liquid fuel.
Inventors
- 👤 Kunio Yoshimine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:15
CPC Classifications
F; F02; F02M; F02M27/00; F02B; F02B1/00; F02B1/02; F02B1/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
28 words
A static charger as claimed in claim 1 wherein said friction element comprises at least a single metal sheet with said semiconductor film means on said metal sheet.
Claim 2
Dependent Claim
26 words
A static charger as claimed in claim 2 wherein said friction element includes a central core and said metal sheet is rolled around said central core.
Claim 3
Dependent Claim
23 words
A static charger as claimed in claim 3 wherein said central core has an axis, said axis being axially aligned with said conduit.
Claim 4
Dependent Claim
25 words
A static charger as claimed in claim 1 wherein said friction element comprises a metal mesh with said semiconductor film means on said metal mesh.
Claim 5
Dependent Claim
34 words
A static charger as claimed in claim 1 wherein said friction element comprises a plurality of metal sheets arranged in layers with said semiconductor film means on each of said plurality of metal sheets.
Claim 6
Dependent Claim
34 words
A static charger as claimed in claim 1 wherein said friction element comprises a plurality of sheets of metal mesh forming layers with said semiconductor film means on each of said plurality of meshes.
Claim 7
Dependent Claim
20 words
A static chArger as claimed in claim 1 comprising a metal mesh disposed between said conduit and said friction element.
Claim 8
Dependent Claim
121 words
A static charger according to claim 1 wherein the semiconductor film comprises at least one of the following materials: a. a cuprous oxide film; b. a film prepared on the surface of copper, or copper alloy, by treatment with chromic acid or a sulfate; c. a crystalline film of selenium; d. an electrolytic film mainly composed of aluminum oxalate or of chromate or phosphate; e. a film of iron tetroxide prepared from iron with steam at an appropriate temperature; f. a black iron oxide film prepared by treatment with materials belonging to alkaline system; or g. an oxide film prepared by treatment with phosphoric treating agents belonging to any one of zinc phosphate system, manganese phosphate system and iron phosphate system.
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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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |