Vibratory tools
AssigneeThe Post Office
InventorsWilliam Edward Cox, Frank James Lee
Life of this patent
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Abstract
A vibratory tool in which, to reduce vibration of the handle, a vibration isolation mechanism is provided to connect the handle to the tool body. In the preferred embodiment, the mechanism comprises two beams associated with respective torsionally-resistant members which convert translational oscillation of the tool body into forced angular oscillation of the beams about respective induced nodal axes. The tool handle is connected to the beams at these nodal axes.
Claims11
A vibratory tool having a handle, a body and a vibration isolation mechanism connecting the handle to the body, the vibration isolation mechanism comprising two beams pivotally connected to the tool body and, for each beam, at least one respective torsionally-resilient member, the torsionally-resilient members being so mounted relative to the beams as to convert translational oscillation of the tool body into forced angular oscillation of each beam about a respective induced nodal axis located perpendicular to the beam and at a position along the length thereof, and means pivotally connecting the handle to each beam at the said nodal axis, which means offers substantially no resistance to rotational movement of the beam in a plane to which the nodal axis is perpendicular.
A vibratory tool having a handle, a body and a vibration isolation mechanism connecting the handle to the body, the vibration isolation mechanism comprising at least one beam connected to the tool body, and at least one torsionally-resilient member so mounted relative to the beam as to convert translational oscillation of the tool body into forced angular oscillation of the beam about an induced nodal axis located perpendicular to the beam and at a position along the length thereof, and means pivotally connecting the handle to the beam at the said nodal axis, which means offers substantially no resistance to rotational movement of the beam in a plane to which the nodal axis is perpendicular.
Dependencies are inferred from the claim text.