Chainsaw throttle and brake mechanisms

Details Chainsaw throttle and brake mechanisms Chainsaw throttle and brake mechanisms

2007-04-10

2007-04-10

Wilson, Lee D. (Department: 3723)

Cutlery

Cutting tools

Saw

C030S381000, C030S385000, C188S07700R, C188S166000

Reexamination Certificate

active

11180442

ABSTRACT:
A chainsaw is provided having a brake band disposed about a drum that rotates during advancement of the saw chain about the saw bar. An end of the brake band is biased to a position that draws the brake band tight about the drum to prevent advancement of the saw chain, and the throttle trigger of the chainsaw is associated with this biased end to push the band against the bias and release the drum when the throttle trigger is squeezed to drive the elements of the chainsaw that serve to advance the saw chain. Also provided are new concepts for associating throttling and braking elements with the throttle trigger.

REFERENCES:
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patent: 4594780 (1986-06-01), Schliemann et al.
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patent: 6588110 (2003-07-01), Galster et al.
patent: 6842987 (2005-01-01), Martinson et al.

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