Internal-combustion engines – Engine speed regulator – Open loop condition responsive
Patent
1987-12-17
1989-01-17
Argenbright, Tony M.
Internal-combustion engines
Engine speed regulator
Open loop condition responsive
745022, F16C 110
Patent
active
047981857
ABSTRACT:
The pivotally mounted throttle lever on a gasoline engine powered flexible line trimmer has a flexible arm portion which is linked to the engine's pivotally mounted carburetor throttle arm by an elongated cable structure. When the linkage structure is in a "short" portion of its lengthwise dimensional tolerance range the throttle lever stroke distance is greater than that required to move the throttle arm to its fully open, actuated limit position in which it is stopped by an abutment surface. The throttle lever, when the throttle arm has been moved to such limit position, thus still has an unused position of its total available stroke distance. When the lever is forcibly driven through this remaining stroke portion, the flexible connecting arm is resiliently bent relative to the balance of the throttle lever to thereby avoid undesirably high stress levels in the throttle lever, the linkage cable and the carburetor throttle arm. The use of this simple and inexpensive flexible connecting arm eliminates the necessity of providing auxiliary structure for adjusting the lever stroke distance and/or the effective length of the linkage cable.
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Argenbright Tony M.
Carlberg Eric R.
White Consolidated Industries, Inc.
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