US4036188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carburetor equipped with a cooling system
Assignee: Toyota Motor Corp
•
Filing: 1974-11-08
•
Granted: 1977-07-19
•
Expires: 1994-11-08
Abstract
Abstract A carburetor equipped with a cooling system composed of cooling fluid passages incorporated in the carburetor flange and/or heat insulator mounted below the flange portion, said cooling system being supplied with cooling fluid only for a predetermined duration from the instant of opening the ignition switch to protect the carburetor casing from being overheated by an intake manifold incorporating exhaust gas heating.
Inventors
- 👤 Hiroshi Sami
- 👤 Kaoru Taira
- 👤 Teruo Kumai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:53
CPC Classifications
F; F02; F02M; F02M15/00; F02M15/06; F01; F01P; F01P1/00; F01P1/06; F02M31/00; F02M31/20; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S261/00; Y10S261/81
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
88 words
A carburetor in an internal combustion engine which incorporates intake manifold heating by exhaust gases to improve startability and warming-up performance of the engine, comprising a fluid cooling system means for a carburetor casing, said cooling system means including a pumping means for a cooling fluid and a power circuit means for said pumping means, said power circuit means incorporating an engine ignition switch and a timer and adapted to drive said pumping means for only a predetermined duration from the instant when said ignition switch is opened.
Claim 2
Dependent Claim
88 words
A carburetor in an internal combustion engine which incorporates intake manifold heating by exhaust gases to improve startability and warming-up performance of the engine, comprising a fluid cooling system means for a carburetor casing, said cooling system means including a pumping means for a cooling fluid and a power circuit means for said pumping means, said power circuit means incorporating an engine ignition switch and a timer and adapted to drive said pumping means for only a predetermined duration from the instant when said ignition switch is opened.
Claim 3
Dependent Claim
26 words
The carburetor according to claim 1, wherein said fluid cooling system means comprises a cooling water passage formed in a flange portion of the carburetor casing.
Claim 4
Dependent Claim
26 words
The carburetor according to claim 1, wherein the fluid cooling system means comprises a cooling water passage formed in a heat insulator mounted below the carburetor.
Claim 5
Dependent Claim
33 words
The carburetor according to claim 1, wherein said fluid cooling system means is an independent system including its own cooling tank and circulation pump, said system being separated from an engine cooling system.
References Cited (Backward Citations)
US1250912A
Cited
US1335391A
Cited
US1741464A
Cited
US1903446A
Cited
US2084940A
Cited
US2224740A
Cited
US2508988A
Cited
US2560220A
Cited
US2716396A
Cited
US2807245A
Cited
US3253647A
Cited
US3332476A
Cited
US3732696A
Cited
US3780714A
Cited
US3828747A
Cited
US3845749A
Cited
US3850152A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-18 | 1981-01-17 | 1981-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-18 | 1985-01-17 | 1985-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-18 | 1989-01-17 | 1989-07-19 | $7700.00 | Window Closed / Lapsed |