US4091786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for regulating fuel intake of internal combustion engines
Assignee: Individual
•
Filing: 1977-01-31
•
Granted: 1978-05-30
•
Expires: 1997-01-31
Abstract
Abstract A flow regulating device, for insertion in an air fuel intake pipe of an internal combustion engine, comprising a sheet metal support having a number of cut-out portions therein so as to define, for the support, a peripheral mounting portion, an annular central portion having a central aperture and web portions between the mounting portion and the central portion for locating and supporting the central portion, and a metal gauze sheet secured to the sheet metal support covering the cut-out portions with a central aperture in the gauze sheet coincident with the central aperture in the sheet metal support.
Inventors
- 👤 George Albert Hartopp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:48
CPC Classifications
F; F02; F02M; F02M29/00; F02M29/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
133 words
A flow regulating device for insertion in an air fuel intake pipe of an internal combustion engine, comprising sheet metal support, a number of cut-out portions in the support defining, for the support, a peripheral mounting portion, an annular central portion, a central aperture in the central portion and web portions between the mounting portion and the central portion, a metal gauze sheet overlying the sheet metal support and the cut-out portions therein said gauze sheet being in close contact with said web portions for selective masking by said web portions, means securing the metal gauze sheet to the sheet metal support, and a central aperture in the metal gauze sheet coincident with the central aperture in the sheet metal support said apertures providing a free and uninterrupted air passage through the device.
Claim 2
Dependent Claim
133 words
A flow regulating device for insertion in an air fuel intake pipe of an internal combustion engine, comprising sheet metal support, a number of cut-out portions in the support defining, for the support, a peripheral mounting portion, an annular central portion, a central aperture in the central portion and web portions between the mounting portion and the central portion, a metal gauze sheet overlying the sheet metal support and the cut-out portions therein said gauze sheet being in close contact with said web portions for selective masking by said web portions, means securing the metal gauze sheet to the sheet metal support, and a central aperture in the metal gauze sheet coincident with the central aperture in the sheet metal support said apertures providing a free and uninterrupted air passage through the device.
Claim 3
Dependent Claim
25 words
A device according to claim 1, wherein the sheet metal support is a flat sheet of stainless steel of thickness 0.017 inches to 0.022 inches.
Claim 4
Dependent Claim
20 words
A device according to claim 2, wherein the diameter of the coincident central apertures is 0.375 inches to 0.400 inches.
Claim 5
Dependent Claim
21 words
A device according to claim 1, wherein the web portions together occupy about 8% of the area of the cut-out portions.
Claim 6
Dependent Claim
43 words
A device according to claim 1, wherein the web portions and the annular central portion of the sheet metal support are unitarily formed and said central portion is bent over as a flange over the edge of the central aperture in the gauze.
References Cited (Backward Citations)
US1061655A
Cited
US1394820A
Cited
US3544290A
Cited
US3615296A
Cited
US3682608A
Cited
US3934569A
Cited
US4015575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-29 | 1981-11-28 | 1982-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-29 | 1985-11-28 | 1986-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-29 | 1989-11-28 | 1990-05-30 | $7700.00 | Window Closed / Lapsed |