Operation lever unit for engine-powered working machine

Details Operation lever unit for engine-powered working machine Operation lever unit for engine-powered working machine

1998-06-11

1999-12-28

Graysay, Tamara L.

Machine element or mechanism

Control lever and linkage systems

Elements

74480R, 745016, G05G 1100, G05G 506, F16C 112

Patent

active

06006627&

ABSTRACT:
An operation lever unit includes an operation handle attached to an operating rod of an engine-powered portable working machine. The operation handle is equipped with a throttle lever for regulating the power of an engine, a lock lever for holding the throttle lever in a desired position, and a secondary throttle adjustment lever for achieving a fine adjustment of the position of the throttle lever. To hold the throttle lever in the desired position, the throttle lever is forced against a portion of the operation handle by the action of a thrust cam mechanism disposed between the throttle lever and the lock lever. For achieving the fine adjustment of the throttle lever position, the secondary throttle adjustment lever is forced by a thumb of the operator to forcibly turn the throttle lever against a frictional force acting between the throttle lever and the handle portion.

REFERENCES:
patent: 5664543 (1997-09-01), Taomo et al.
patent: 5765445 (1998-06-01), Miyata
patent: 5862713 (1999-01-01), Tsunoda et al.
patent: 5868377 (1999-02-01), Taomo et al.

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