Vibration isolation for a percussion rammer
AssigneeM-B-W Inc.
InventorsPaul M. Sina, Gerard J. Fieweger
Life of this patent
Estimating the term…
Abstract
A soil compacting percussion rammer includes an operator handle assembly that is isolated from the main machine frame by a shock absorbing mount oriented to absorb the horizontal components of operating movement of the rammer. In a preferred embodiment, the shock absorbing mount comprises a pair of torsionally resilient shock absorbers interconnecting the frame and the operator handle and oriented to position the shock absorbers on a common torsional axis that is vertically offset from and generally parallel to the horizontal operator handle.
Claims10
An operator handle assembly for a percussive soil compacting device for isolating generally horizontal components of operating movement from the hands of the operator, said handle assembly comprising:
- a main frame attached at one end to the compacting device;
- and,
- a manually engageable operator handle attached to the other end of the main frame with a shock absorbing mount oriented to absorb generally horizontal components of operating movement.
In a manually operated percussive soil tamping apparatus of the type having a forwardly-inclined operating axis along which the percussive tamping movement is transmitted, an operator handle mounted to the rear of the apparatus by a generally horizontally extending frame, said frame having a forward frame end resiliently attached to the apparatus to isolate generally vertical components of operating movement from the operator and a rear frame end attached to the operator handle, a method for isolating generally horizontal components of operating movement from the operator comprising:
- (1) providing a generally horizontal operating handle member having opposite lateral ends;
- (2) providing the rear frame end with a pair of laterally spaced generally horizontal frame members having ends adjacent the handle member ends;
- and,
- (3) connecting the ends of the handle member to the ends of the frame member with shock absorbing devices oriented to absorb generally horizontal components of operating movement and to minimize transmission thereof to the handle member.
Dependencies are inferred from the claim text.