Automatic choke for an engine
AssigneeBriggs & Stratton Corporation
InventorsMax W. Clouse, Thomas G. Guntly, Mel O. Lux, Michael B. Busateri
Life of this patent
Estimating the term…
Abstract
An engine starting assist system configured to be used on an internal combustion engine. The engine starting assist system includes a battery, a choke valve disposed in an air intake of an air/fuel-mixing device, the choke valve having an open position and a closed position, a rotary solenoid powered by the battery, the rotary solenoid having an output shaft, and a bimetal coil. The output shaft of the rotary solenoid is coaxial with the bimetal coil.
Claims25
An engine starting assist system configured to be used on an internal combustion engine, the starting assist system comprising:
- a battery;
- a choke valve disposed in an air intake of an air/fuel-mixing device, the choke valve having an open position and a closed position;
- a rotary solenoid powered by the battery, the rotary solenoid having an output shaft;
- a bimetal coil, wherein the output shaft of the rotary solenoid is coaxial with the bimetal coil;
- and
- a choke arm encircling and rotatably supported by the output shaft while asymmetrically projecting outwardly from the output shaft, the choke arm being rotatable about the output shaft relative to the output shaft by the bimetal coil.
An automatic choke configured to be used on an internal combustion engine, the automatic choke comprising:
- a choke valve disposed in an air intake of an air/fuel-mixing device, the choke valve having an open position and a closed position;
- and
- an automatic choke module comprising:
- a rotary solenoid powered by a battery, the rotary solenoid having an output shaft;
- a bimetal coil assembly including a bimetal coil;
- a choke arm;
- wherein the output shaft of the rotary solenoid is coaxial with the bimetal coil;
- and
- a housing substantially enclosing the automatic choke module, wherein the housing includes an index mechanism configured to allow static positioning of the choke arm, the index mechanism comprising:
- two arms having respective ends;
- and
- a plurality of spaced notches configured to engage the ends of the two arms.
An engine starting assist system configured to be used on an internal combustion engine, the starting assist system comprising:
- a battery;
- a choke valve disposed in an air intake of an air/fuel-mixing device, the choke valve having an open position and a closed position;
- a rotary solenoid powered by the battery, the rotary solenoid having an output shaft;
- a bimetal coil, wherein the output shaft of the rotary solenoid is coaxial with the bimetal coil;
- a choke arm coaxial with the output shaft of the rotary solenoid and the bimetal coil;
- and
- a cover configured to substantially surround the choke arm to prevent debris from entering the rotary solenoid, wherein the cover further includes markings to indicate choke valve positions.
Dependencies are inferred from the claim text.