US3769949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated spark advance and carburetor valve control mechanism
Assignee: Brunswick Corp
•
Filing: 1972-08-07
•
Granted: 1973-11-06
•
Expires: 1992-08-07
Abstract
Abstract A dual control linkage simultaneously advances the spark, through rotation of the distributor housing, and opens the carburetor valve by means of a rotating cam. Spark advance is stopped at some predetermined carburetor valve setting; however, further cam rotation continues to increase the carburator valve opening.
Inventors
- 👤 R Elingsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:20
CPC Classifications
F; F02; F02P; F02P5/00; F02P5/02; F02D; F02D9/00; F02D2700/00; F02D2700/02; F02D2700/0217; F02D2700/0225; F02D2700/0228; F02D2700/023; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
210 words
In an internal combustion engine including a distributor housing having means to produce sparks to cause firing of the engine, a throttle movable to control the speed of the engine, first link means connecting said throttle to said distributor housing to advance the time when said spark producing means produces sparks as said throttle is moved to increase the speed of the engine, means to control the position of a carburetor valve, a cam having a profile cooperating with said control means, second link means connecting said cam to said throttle to change the position of the profile of said cam relative to said control means in accordance with the position of said throttle to change the position of the carburetor valve, means to stop movement of said distributor housing by said throttle after said spark producing means has been advanced a predetermined distance by movement of said throttle to increase the speed of the engine, and said cam being positioned to have its profile continue to cooperate with said control means to provide a cam controlled change of the position of the carburetor valve as said throttle is moved to increase the speed of the engine after movement of said distributor housing has been stopped by said stop means.
Claim 2
Dependent Claim
210 words
In an internal combustion engine including a distributor housing having means to produce sparks to cause firing of the engine, a throttle movable to control the speed of the engine, first link means connecting said throttle to said distributor housing to advance the time when said spark producing means produces sparks as said throttle is moved to increase the speed of the engine, means to control the position of a carburetor valve, a cam having a profile cooperating with said control means, second link means connecting said cam to said throttle to change the position of the profile of said cam relative to said control means in accordance with the position of said throttle to change the position of the carburetor valve, means to stop movement of said distributor housing by said throttle after said spark producing means has been advanced a predetermined distance by movement of said throttle to increase the speed of the engine, and said cam being positioned to have its profile continue to cooperate with said control means to provide a cam controlled change of the position of the carburetor valve as said throttle is moved to increase the speed of the engine after movement of said distributor housing has been stopped by said stop means.
Claim 3
Dependent Claim
71 words
The engine according to claim 1 in which said throttle includes a first arm pivotally mounted on the engine and pivotal in response to operator movable means, a second arm pivotally mounted on the engine and having the same pivot axis as said first arm, means to transmit pivotal movement of said first arm to said second arm, and said first connecting means connecting said second arm to said distributor housing.
Claim 4
Dependent Claim
80 words
The engine according to claim 2 in which said transmitting means comprises means to resiliently connect said first arm and said second arm to each other, said stop means including means to limit the amount of pivoting of said second arm with said first arm by stopping pivoting of said second arm with said first arm, and said resilient means allowing said first arm to continue to be pivoted after said second arm has been stOpped by said stop means.
Claim 5
Dependent Claim
50 words
The engine according to claim 3 including means mounted on the engine to rotatably support said cam for rotation about an axis parallel to the axis of rotation of the engine crankshaft and further from the axis of the distributor housing than the axis of rotation of the engine crankshaft.
Claim 6
Dependent Claim
22 words
The engine according to claim 4 in which said second connecting means includes means to connect said first arm to said cam.
Claim 7
Dependent Claim
43 words
The engine according to claim 3 in which said cam is supported on said engine between said distributor housing and the axis of rotation of the engine crankshaft for rotation about an axis parallel to the axis of rotation of the engine crankshaft.
Claim 8
Dependent Claim
27 words
The engine according to claim 1 in which said cam is disposed for rotation about an axis parallel to the axis of rotation of the engine crankshaft.
Claim 9
Dependent Claim
51 words
The engine according to claim 1 including means mounted on the engine to rotatably support said cam means for rotation about an axis parallel to the axis of rotation of the engine crankshaft and further from the axis of the distributor housing than the axis of rotation of the engine crankshaft.
References Cited (Backward Citations)
US1368661A
Cited
US2087669A
Cited
US2644419A
Cited
US2627836A
Cited
US2906251A
Cited
US2890689A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |