192 clutches and power-stop control – Stop mechanism – Safety device
Patent
1990-08-23
1991-12-31
Lorence, Richard
192 clutches and power-stop control
Stop mechanism
Safety device
123198D, 30381, F02D 1102, F16P 318
Patent
active
050764110
ABSTRACT:
The invention relates to a two-handle arrangement for a handheld portable tool having a drive motor and equipped with forward and rearward handles for two-handled operation. Each of these handles includes respective actuating elements which can be actuated only in a specific sequence. First, force must be applied to the actuating element on the forward handle and only when a corresponding actuation of the throttle lever takes place is there an increase in the speed of the drive motor. The invention is especially suited for handheld portable tools equipped with an internal combustion engine such as motor-driven chain saws, hedge trimmers and the like.
REFERENCES:
patent: 3361165 (1968-01-01), Irgens
patent: 4028804 (1977-06-01), Hammond
patent: 4543723 (1985-10-01), Bortfeld et al.
patent: 4959906 (1990-10-01), Moore, Jr.
Dohse Hans-Peter
Kramer Jochen
Lorence Richard
Ottesen Walter
Stibl Andreas
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