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US 4,285,405 AGranted
Oscillator for reciprocating tool or other device
OwnerCasper J. Weir, Jr.inventor
Life of this patent
Estimating the term…
Abstract
An oscillator for reciprocating tools or other devices. Driving sprockets are mounted for rotation on a frame or in a housing and a pair of driven sprockets are mounted on the frame, each to be driven by a respective driving sprocket. The driven sprockets are outwardly of the driving sprockets, all sprockets having their axes in the same plane. Eccentrically mounted masses are on the shafts of the driven sprockets which when rotated generate forces on the axes of the driven sprockets. These forces are transmitted to the frame through shafts of the driven sprockets. A couple is generated about the axis of the driving sprocket causing the frame to oscillate. A tool attached to the lower end of the frame is thereby reciprocated.
Claims12
An oscillator comprising:
- a frame,
- a plurality of first means each connecting respective masses to said frame for rotation relative thereto, each mass having a respective axis of rotation in a respective first means,
- second means connecting rotatable driving means to said frame and to said first means to rotate said masses, said driving means having an axis of rotation in said second means and being spaced from the axes in the first means,
- each mass being spaced from its axis of rotation by a respective rotatable support, each mass and its axis being spaced with respect to the axis of the driving means so that rotation of said masses produces radial forces that are balanced with respect to said last axis,
- each mass being positioned on its support so that rotation of the masses by the driving means generates a force through the mass supports to the axes of the respective first means, said last force being tangential with respect to the axis in the second means,
- said first means being adapted to transmit said tangential forces to the frame to generate a couple about the axis of the second means to oscillate said frame about said last axis when said frame is supported for oscillation thereat,
- power means attached to said frame to rotate said driving means about its axis and to support said frame for oscillation at said last axis,
- a device to be reciprocated attached to said frame at one end thereof in the plane through said last axis, and
- handle means extending from said power means in a direction away from said frame;
- said device being attached at a lower end of said oscillator to support said oscillator on a surface;
- and
- said handle means being adapted for moving said device along said surface and for controlling the position of said oscillator.
9 more elements
An oscillator comprising:
- a frame,
- a plurality of first means each connecting respective masses to said frame for rotation relative thereto, each mass having a respective axis of rotation in a respective first means,
- second means connecting rotatable driving means to said frame and to said first means to rotate said masses, said driving means having an axis of rotation in said second means and being spaced from the axes in the first means,
- each mass being spaced from its axis of rotation by a respective rotatable support, each mass and its axis being spaced with respect to the axis of the driving means so that rotation of said masses produces radial forces that are balanced with respect to said last axis,
- each mass being positioned on its support so that rotation of the masses by the driving means generates a force through the mass supports to the axes of the respective first means, said last force being tangential with respect to the axis in the second means,
- said first means being adapted to transmit said tangential forces to the frame to generate a couple about the axis of the second means to oscillate said frame about said last axis when said frame is supported for oscillation thereat,
- said first means each including a driven shaft supported for rotation in said frame;
- said mass supports being arms to support the masses eccentrically with respect to said driven shafts, the axis of rotation of each mass being in a driven shaft,
- said first means each including a driven wheel mounted on a respective shaft to rotate the same and a respective mass,
- said second means including a driving shaft supported for rotation in said frame, said axis of said driving means being in said driving shaft, and
- a pair of driving wheels mounted on said driving shaft for rotation therewith;
- each of said driving wheels being connected to drive a respective driven wheel.
9 more elements
A portable oscillator for tools and the like comprising
- a housing containing
- a shaft constituting a fulcrum on which said housing may oscillate,
- paired eccentric masses rotatable on axes radially outwardly disposed with respect to said shaft;
- said masses being oppositely arranged with respect to each other on their respective axes whereby upon their synchronous rotation a couple is generated about the axis of said shaft, and
- driving means connecting said shaft and said masses for rotation of the latter;
- said housing and its contents being rotationally balanced with respect to said fulcrum,
- a prime mover connected to said shaft to rotate the same, and
- handle means connected to said housing coaxially with said shaft whereby the same may be partially supported and may be steered while resting on a tool carried by said tool support.
5 more elements
Dependencies are inferred from the claim text.