Patent US4490148B1 successfully refreshed from Google Patents.
Patent US4569662A successfully refreshed from Google Patents.
US3713630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multicylinder carburetor
Assignee: Individual
•
Filing: 1971-08-03
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Granted: 1973-01-30
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Expires: 1991-08-03
Abstract
Abstract A carburation system for multicylinder engines having an auxiliary throttle member in the intake pipe upstream of the main throttle member and controlled by the rate of air flow through the intake pipe and serving to control the rate of fuel delivery.
Inventors
- 👤 B Laprade
- 👤 X Laprade
- 👤 P Gele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:04
CPC Classifications
F; F02; F02M; F02M17/00; F02M17/08; F02M17/09; F02M17/44; F02M23/00; F02M23/04; F02M23/08; F02M23/09; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
204 words
A carburation system for multicylinder internal combustion engines comprising an intake means including an enlarged manifold and a large diameter and a small diameter air inlet to said enlarged manifold, a main throttle member in said small air inlet, an auxiliary throttle member in said small air inlet and upstream of said main throttle member, the space between said throttle members defining a chamber, a second main throttle member in said large air inlet, the position of said auxiliary throttle means in the small air inlet varying in proportion to the rate of air flow through said small air inlet, individual inlet pipes of predetermined length leading from said enlarged manifold to the individual cylinders, inlet valve means for each cylinder, a dosing element for controlling the delivery of fuel to the engine, means actuated by said auxiliary throttle member for controlling said dosing element, passage means for conducting the fuel from said dosing element to each individual inlet pipe adjacent each inlet valve means, and means actuated by the pressure in the chamber between the auxiliary throttle means And the main throttle means of the small air inlet for controlling the position of the second main throttle member in the large air inlet.
Claim 2
Dependent Claim
204 words
A carburation system for multicylinder internal combustion engines comprising an intake means including an enlarged manifold and a large diameter and a small diameter air inlet to said enlarged manifold, a main throttle member in said small air inlet, an auxiliary throttle member in said small air inlet and upstream of said main throttle member, the space between said throttle members defining a chamber, a second main throttle member in said large air inlet, the position of said auxiliary throttle means in the small air inlet varying in proportion to the rate of air flow through said small air inlet, individual inlet pipes of predetermined length leading from said enlarged manifold to the individual cylinders, inlet valve means for each cylinder, a dosing element for controlling the delivery of fuel to the engine, means actuated by said auxiliary throttle member for controlling said dosing element, passage means for conducting the fuel from said dosing element to each individual inlet pipe adjacent each inlet valve means, and means actuated by the pressure in the chamber between the auxiliary throttle means And the main throttle means of the small air inlet for controlling the position of the second main throttle member in the large air inlet.
Claim 3
Dependent Claim
204 words
A carburation system for multicylinder internal combustion engines comprising an intake means including an enlarged manifold and a large diameter and a small diameter air inlet to said enlarged manifold, a main throttle member in said small air inlet, an auxiliary throttle member in said small air inlet and upstream of said main throttle member, the space between said throttle members defining a chamber, a second main throttle member in said large air inlet, the position of said auxiliary throttle means in the small air inlet varying in proportion to the rate of air flow through said small air inlet, individual inlet pipes of predetermined length leading from said enlarged manifold to the individual cylinders, inlet valve means for each cylinder, a dosing element for controlling the delivery of fuel to the engine, means actuated by said auxiliary throttle member for controlling said dosing element, passage means for conducting the fuel from said dosing element to each individual inlet pipe adjacent each inlet valve means, and means actuated by the pressure in the chamber between the auxiliary throttle means And the main throttle means of the small air inlet for controlling the position of the second main throttle member in the large air inlet.
Claim 4
Dependent Claim
204 words
A carburation system for multicylinder internal combustion engines comprising an intake means including an enlarged manifold and a large diameter and a small diameter air inlet to said enlarged manifold, a main throttle member in said small air inlet, an auxiliary throttle member in said small air inlet and upstream of said main throttle member, the space between said throttle members defining a chamber, a second main throttle member in said large air inlet, the position of said auxiliary throttle means in the small air inlet varying in proportion to the rate of air flow through said small air inlet, individual inlet pipes of predetermined length leading from said enlarged manifold to the individual cylinders, inlet valve means for each cylinder, a dosing element for controlling the delivery of fuel to the engine, means actuated by said auxiliary throttle member for controlling said dosing element, passage means for conducting the fuel from said dosing element to each individual inlet pipe adjacent each inlet valve means, and means actuated by the pressure in the chamber between the auxiliary throttle means And the main throttle means of the small air inlet for controlling the position of the second main throttle member in the large air inlet.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |