Patent US3975466A successfully refreshed from Google Patents.
US3975466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carburetor auxiliary fluid injector
Assignee: BRADSHAW GEORGE W FIFTY PER CENT (50%)
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Filing: 1975-04-10
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Granted: 1976-08-17
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Expires: 1995-04-10
Abstract
Abstract An attachment for introducing fluid to the air intake of a carburetor of an internal combustion engine has at least one open-ended barrel in the form of a tube positioned in the air intake stream of a carburetor with the axis of the barrel in parallel alignment with the air flow. The attachment includes a fluid reservoir and tubing for the passage of fluid from the reservoir to an orifice leading into the bore of the barrel. The barrel may have a venturi configuration. Thus, the passage of carburetor intake air through the bore of the barrel creates a suction which draws fluid into the bore where it is atomized and vaporized.
Inventors
- 👤 George W. Bradshaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:41
CPC Classifications
F; F02; F02M; F02M25/00; F02B; F02B1/00; F02B1/02; F02B1/04; Y; Y10; Y10S; Y10S55/00; Y10S55/28
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
192 words
An attachment for introducing a fluid to the air intake of a carburetor of an internal combustion engine having an air filter and fuel injector nozzles, said attachment being for mounting within said air filter and comprising: a source of said fluid; at least one open-ended barrel having a through bore; means for holding said barrel in the air intake of said carburetor in a position whereby said barrel is axially parallel with the direction of air flow to said carburetor; and means for conveying said fluid from said source of fluid to the bore of said barrel whereby the passage of carburetor intake air through said bore draws said fluid into said bore where it is atomized and vaporized; wherein said holding means includes a mounting member having an aperture axially parallel to said barrel for mounting said member on a support rod and said means for conveying fluid to the bore of said barrel is a rigid hollow tube having an end leading into the bore of said barrel and another end connected to said mounting member, said other end being in fluid communication with said source of said fluid.
Claim 2
Dependent Claim
192 words
An attachment for introducing a fluid to the air intake of a carburetor of an internal combustion engine having an air filter and fuel injector nozzles, said attachment being for mounting within said air filter and comprising: a source of said fluid; at least one open-ended barrel having a through bore; means for holding said barrel in the air intake of said carburetor in a position whereby said barrel is axially parallel with the direction of air flow to said carburetor; and means for conveying said fluid from said source of fluid to the bore of said barrel whereby the passage of carburetor intake air through said bore draws said fluid into said bore where it is atomized and vaporized; wherein said holding means includes a mounting member having an aperture axially parallel to said barrel for mounting said member on a support rod and said means for conveying fluid to the bore of said barrel is a rigid hollow tube having an end leading into the bore of said barrel and another end connected to said mounting member, said other end being in fluid communication with said source of said fluid.
Claim 3
Dependent Claim
58 words
An attachment as claimed in claim 1 which further comprises an auxiliary fluid-introducing means positionable downstream with respect to the fuel injector nozzles of said carburetor, said auxiliary fluid-introducing means comprising a manifold connected for the flow of said fluid thereto and at least one fluid-introducing orifice leading from said manifold into said carburetor downstream of said nozzles.
Claim 4
Dependent Claim
23 words
An attachment as claimed in claim 1 in which the support rod is the mounting rod of the air filter of said carburetor.
Claim 5
Dependent Claim
75 words
An attachment as claimed in claim 1 further comprising a U-shaped adapter having extending legs defining slots for mounting said adapter on the lip at the air intake end of the carburetor, a cylindrical pin positioned at the apex of said adapter, said pin being axially parallel with the direction of air flow when said adapter is mounted on said carburetor and said pin defining said support rod for mounting of said mounting member thereon.
Claim 6
Dependent Claim
56 words
An attachment as claimed in claim 1 in which there are at least two barrels spaced from, and connected by said hollow tubes to said mounting member and a fluid flow divider disposed in said mounting member between said hollow tubes and said source of fluid for feeding said fluid to the bores of said barrels.
Claim 7
Dependent Claim
14 words
An attachment as claimed in claim 5 in which the barrels are venturi tubes.
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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) | 1979-08-17 | 1980-02-16 | 1980-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-17 | 1984-02-16 | 1984-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-17 | 1988-02-16 | 1988-08-17 | $7700.00 | Window Closed / Lapsed |