Manually operated implement

Details Manually operated implement Manually operated implement

2006-12-26

2006-12-26

McClellan, James (Department: 3683)

Spring devices

Resilient shock or vibration absorber

Tool movement dampening

C267S136000, C173S162200, C030S381000

Reexamination Certificate

active

07152853

ABSTRACT:
A manually operated implement such as a chain saw, a parting-off grinder or similar device has an internal combustion engine to drive a tool and a handle arrangement to operate the implement. The handle arrangement is connected to the internal combustion engine via a vibration damping system, the vibration damping system comprising at least one anti-vibration element. In order to achieve good vibration damping and sufficient operational rigidity in all operating ranges, in at least one direction of vibration in a predetermined frequency range the anti-vibration element has a first characteristic curve in a first state and a second characteristic curve in a second state and the anti-vibration element can be switched between the first state and the second state.

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