Mechanism generating elliptical motion
AssigneeUnion Special Corporation
InventorsChandrakant Bhatia, George M. Toman, Thomas J. Bock
Life of this patent
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Abstract
A Cardan gear assembly wherein rotary input motion of the main shaft is converted to elliptical output at the Cardan gear output centerpoint. The Cardan gear output centerpoint is connected via a ball and a pin slideable therethrough to a support having a work performing instrumentality arranged at its distal end. During operation, the elliptical output motion of the Cardan gear output centerpoint is transmuted into three dimensional, elliptical like motion at the tip of the work performing instrumentality.
Claims7
A Cardan gear assembly wherein rotary motion of the input shaft results in the elliptical like output of a work performing instrumentality, said Cardan gear assembly including a pinion output lever, main bearing means subjected to generally minimum load and moment and a double speed bearing means subjected to a constant load during operation wherein the improvement comprises:
- means operative to convert elliptical two dimensional motion into elliptical like three dimensional motion, connected to the pinion output lever of said Cardan gear assembly means;
- a means supporting said work performing instrumentality and being connected to said means operative to convert elliptical two dimensional motion into elliptical like three dimensional motion;
- and
- a bearing means carrying said means supporting said work performing instrumentality such that rotary and reciprocatory motion occur therebetween.
A method for converting rotary motion into elliptical like motion comprising the steps of:
- balancing a Cardan gear means;
- converting the elliptical two dimensional output of said Cardan gear means into reciprocatory and rotary motion;
- transferring said reciprocatory and rotary motion to a shaft means whereby said shaft moves along and around its major axis;
- and
- connecting a lever means to said shaft having a work performing means spaced away from said shaft whereby said work performing means sweeps out generally an ellipse like curve in three dimensions.
Dependencies are inferred from the claim text.