US3670708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated anti-stall and idle-speed adjustment mechanism
Assignee: Ford Motor Co
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Filing: 1970-12-31
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Granted: 1972-06-20
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Expires: 1990-12-31
Abstract
Abstract An integrated anti-stall and idle-speed adjustment mechanism for an internal combustion engine including a dashpot means for arresting or time delaying the final closing movement of an engine throttle valve to prevent stalling of the internal combustion engine. This dashpot includes adjustment means for setting the stroke of the dashpot and for stopping the closing movement of the throttle valve to thereby set the idle speed position of the throttle and the internal combustion engine.
Inventors
- 👤 William K Ojala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:12
CPC Classifications
F; F02; F02M; F02M3/00; F02M3/06; F02M19/00; F02M19/12; F02M19/122; Y; Y10; Y10S; Y10S261/00; Y10S261/18
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
127 words
In a carburetor for an internal combustion engine, the combination comprising a throttle valve, a shaft supporting said throttle valve rotatably mounted in the carburetor, said shaft having a lever affixed thereto, biasing means affixed to said shaft for biasing said throttle valve toward a closed position, a dashpot including a casing mounted on said carburetor adjacent one end of said lever, said dashpot including a plunger reciprocably mounted therein and means for biasing said plunger toward the one end of said lever, and means carried by said plunger and engageable with said casing for setting the stroke of said dashpot and for stopping the closing movement of said throttle valve against the force of said biasing means thereby determining the idle speed position of said throttle.
Claim 2
Dependent Claim
127 words
In a carburetor for an internal combustion engine, the combination comprising a throttle valve, a shaft supporting said throttle valve rotatably mounted in the carburetor, said shaft having a lever affixed thereto, biasing means affixed to said shaft for biasing said throttle valve toward a closed position, a dashpot including a casing mounted on said carburetor adjacent one end of said lever, said dashpot including a plunger reciprocably mounted therein and means for biasing said plunger toward the one end of said lever, and means carried by said plunger and engageable with said casing for setting the stroke of said dashpot and for stopping the closing movement of said throttle valve against the force of said biasing means thereby determining the idle speed position of said throttle.
Claim 3
Dependent Claim
32 words
The combination of claim 1 in which said last mentioned means comprises a threaded portion on said plunger located externally of said casing, and an adjustable nut positioned on said threaded portion.
Claim 4
Dependent Claim
49 words
The combination of claim 1 in which said dashpot includes means for causing a predetermined time delay in the movement of the throttle valve between a position where the end of said lever first engages said plunger during throttle closing operations and the idle speed position of said throttle.
Claim 5
Dependent Claim
121 words
An integrated anti-stall and idle-speed adjustment mechanism comprising a pair of casing members, a diaphragm peripherally clamped between said casing members to form two separate fluid chambers, a plunger coupled to and supported by said diaphragm and extending through an opening in one of said casing members, means engaging said plunger and one of said casing members for biasing said plunger outwardly through said opening, means for causing restricted fluid flow from one side of said diaphragm to the other as said plunger is moved inwardly through said opening, and adjustable stop means positioned on said plunger exteriorly of said casing members and engageable with one of said casing members for limiting the extent of plunger movement inwardly through said opening.
Claim 6
Dependent Claim
121 words
An integrated anti-stall and idle-speed adjustment mechanism comprising a pair of casing members, a diaphragm peripherally clamped between said casing members to form two separate fluid chambers, a plunger coupled to and supported by said diaphragm and extending through an opening in one of said casing members, means engaging said plunger and one of said casing members for biasing said plunger outwardly through said opening, means for causing restricted fluid flow from one side of said diaphragm to the other as said plunger is moved inwardly through said opening, and adjustable stop means positioned on said plunger exteriorly of said casing members and engageable with one of said casing members for limiting the extent of plunger movement inwardly through said opening.
Claim 7
Dependent Claim
23 words
The combination of claim 4 in which said adjustable stop means comprises a threaded nut positioned on a threaded portion of said plunger.
Claim 8
Dependent Claim
118 words
An integrated anti-stall and idle-speed adjustment mechanism for an internal combustion engine comprising a fluid tight casing, a flexible diaphragm dividing said casing into two chambers, a plunger coupled to and supported by said diaphragm, said plunger extending through an opening in said casing, means engaging said plunger and said casing for biasing said plunger outwardly through said opening, means for causing restricted fluid flow from the chamber opposite said opening to the chamber adjacent said opening as said plunger Is moved inwardly through said opening, and adjustable means on said plunger and engageable with said casing for setting the stroke of said plunger and flexible diaphragm and for setting the idle speed of the internal combustion engine.
Claim 9
Dependent Claim
118 words
An integrated anti-stall and idle-speed adjustment mechanism for an internal combustion engine comprising a fluid tight casing, a flexible diaphragm dividing said casing into two chambers, a plunger coupled to and supported by said diaphragm, said plunger extending through an opening in said casing, means engaging said plunger and said casing for biasing said plunger outwardly through said opening, means for causing restricted fluid flow from the chamber opposite said opening to the chamber adjacent said opening as said plunger Is moved inwardly through said opening, and adjustable means on said plunger and engageable with said casing for setting the stroke of said plunger and flexible diaphragm and for setting the idle speed of the internal combustion engine.
Claim 10
Dependent Claim
22 words
The combination of claim 6 in which said adjustable means comprises a threaded nut positioned on a threaded portion of said plunger.
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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |