US3608874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carburetor for internal combustion engines
Assignee: Volkswagen AG
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Filing: 1969-02-28
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Granted: 1971-09-28
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Expires: 1989-02-28
Abstract
Abstract A carburetor for an internal combustion engine having a bypass channel around a throttle valve and means to adjust the flow in the channel.
Inventors
- 👤 Rudolf Beckmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:12
CPC Classifications
F; F02; F02M; F02M3/00; F02M3/08; F02M3/12; Y; Y10; Y10S; Y10S261/00; Y10S261/38
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
97 words
A carburetor comprising a housing including a main induction conduit having a throttle valve therein, an air bypass channel bridging around said throttle valve, an idling fuel passage in said housing and having an outlet opening in said bypass channel, and an adjustable regulating device projecting into said channel as well as into said outlet opening and operable to simultaneously change the flow cross seCtions of said channel and said outlet opening in a manner whereby the quantity of idling fuel-air mixture supplied to the engine may be varied without changing the mixing ratio of such mixture.
Claim 2
Dependent Claim
97 words
A carburetor comprising a housing including a main induction conduit having a throttle valve therein, an air bypass channel bridging around said throttle valve, an idling fuel passage in said housing and having an outlet opening in said bypass channel, and an adjustable regulating device projecting into said channel as well as into said outlet opening and operable to simultaneously change the flow cross seCtions of said channel and said outlet opening in a manner whereby the quantity of idling fuel-air mixture supplied to the engine may be varied without changing the mixing ratio of such mixture.
Claim 3
Dependent Claim
61 words
A carburetor according to claim 1 in which the regulating device is provided with an outside adjusting screw projecting into the channel and an inside adjusting screw guided in a thread in the outside adjusting screw and protruding into the outlet opening of the fuel passage and adjustable in order to change the mixing ratio independently of the outside adjusting screw.
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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |