US3786794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trigger mechanism for fuel injection pump aneroid control
Assignee: Deere and Co
•
Filing: 1972-11-24
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Granted: 1974-01-22
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Expires: 1992-11-24
Abstract
Abstract A trigger mechanism for the control member of an aneroid on a fuel injection pump assembly includes pivot lever means linked to the fuel shut-off lever of the pump assembly to move the fuel shut-off lever between its off and on positions, pivoted trigger means operatively connected to the control member and extending across the path of movement of the lever means to be engaged and moved by the lever means in a direction to move the control member in a direction to deactivate the aneroid as the lever means is moved in a direction to move the fuel shut-off lever to its off position, and a one-way connection between the speed control lever of the pump assembly and the trigger means to move the trigger means in a direction to move the control member in a direction to activate the aneroid as the speed control lever is moved towards its high-speed position. With this arrangement, the aneroid is automatically deactivated when the engine is shut down so that the engine can be overfuelled for starting and as soon as the speed control lever is advanced to accelerate the engine, the aneroid is again activated.
Inventors
- 👤 L Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:56
CPC Classifications
F; F02; F02M; F02M59/00; F02M59/38; F02M59/42; F02D; F02D1/00; F02D2700/00; F02D2700/02; F02D2700/0269; F02D2700/0282; F02D2700/0284; F02D2700/0287
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
217 words
For use with a fuel injection pump assembly including a speed control lever pivotal between opposite extreme positions corresponding to high-speed and idle positions, a fuel shut-off lever pivotal between opposite extreme positions corresponding to fuel-off and fuel-on positions, an aneroid normally preventing overfuelling, and a control member for the aneroid movable between extreme aneroid-activated and aneroid-deactivated positions, a trigger mechanism for the control member comprising: a trigger support; trigger means pivotally mounted on the support and operatively connected to the control member to move the same between its two extreme positions upon pivotal movement; lever means pivotally mounted on the support in a position to engage and pivot the trigger means in a direction to move the control member to its aneroid-deactivated position as the lever means is moved in a first direction; means interlinking the lever means and the fuel shut-off lever to move the fuel shut-off lever toward its extreme fuel-off and fuel-on positions when the lever means is moved in the first direction and an opposite direction, respectively; and means providing a one-way connection between the trigger means and the speed control lever to move the trigger means in a direction to cause movement of the control member to its aneroid-activated position upon movement of the speed control lever toward its high-speed position.
Claim 2
Dependent Claim
217 words
For use with a fuel injection pump assembly including a speed control lever pivotal between opposite extreme positions corresponding to high-speed and idle positions, a fuel shut-off lever pivotal between opposite extreme positions corresponding to fuel-off and fuel-on positions, an aneroid normally preventing overfuelling, and a control member for the aneroid movable between extreme aneroid-activated and aneroid-deactivated positions, a trigger mechanism for the control member comprising: a trigger support; trigger means pivotally mounted on the support and operatively connected to the control member to move the same between its two extreme positions upon pivotal movement; lever means pivotally mounted on the support in a position to engage and pivot the trigger means in a direction to move the control member to its aneroid-deactivated position as the lever means is moved in a first direction; means interlinking the lever means and the fuel shut-off lever to move the fuel shut-off lever toward its extreme fuel-off and fuel-on positions when the lever means is moved in the first direction and an opposite direction, respectively; and means providing a one-way connection between the trigger means and the speed control lever to move the trigger means in a direction to cause movement of the control member to its aneroid-activated position upon movement of the speed control lever toward its high-speed position.
Claim 3
Dependent Claim
110 words
The combination as set forth in claim 1 wherein the speed control lever, the fuel shut-off lever and the lever means all pivot in substantially parallel planes, the control member is movable in a direction generally perpendicular to the planes, and the trigger means includes a trigger member formed as a pair of integral legs extending generally at right angles to each other, with a first leg extending generally perpendicular to the planes and across the paths of movement of the lever means and a second leg extending generally perpendicular to the direction of movement of the control member and having its free end operatively connected to the control member.
Claim 4
Dependent Claim
71 words
The combination as set forth in claim 2 wherein the trigger support includes an elongated rod extending generally perpendicular to the planes, the second leg is pivotally connected near it inner end to the elongated rod adjacent one end thereof, the second leg is spaced from and extends generally along the elongated rod, and the lever means is pivotal on the elongated rod near the outer end of the second leg.
Claim 5
Dependent Claim
146 words
The combination as set forth in claim 3 wherein the one end of the elongated rod and the control member are provided with aligned apertures; the second leg extends loosely through the aperture in the elongated rod and through the aperture in the control member, the trigger means further includes a cam lever pivotal on the elongated rod and having an outerwardly open recess which receives and engages the free end of the first leg so that as the lever meaNs contacts and moves the first leg it rotates the trigger member in the apertures and as the trigger member rotates the cam lever causes the outer end of the first leg to move in an arc which in turn causes the second leg to pivot in the aperture in the elongated rod so that the free end of the second leg moves the control member.
Claim 6
Dependent Claim
91 words
A combination as set forth in claim 4 wherein the means providing a one-way connection between the trigger means and speed control lever includes an abutment member secured to the speed control lever for movement toward and away from the cam lever as the speed control lever moves to its high-speed and idle positions respectively, and aperture provided in the abutment member, a rigid link pivotally connected to the cam lever and extending through the aperture, and a stop member on the link between the abutment member and the cam lever.
Claim 7
Dependent Claim
42 words
A combination as set forth in claim 5 wherein the trigger member is resilient and the cam lever moves the free end of the first leg through an arc greater than is required to move the control member between its extreme positions.
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) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |