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US 4,796,478 AGranted
Non-linear rotary drive apparatus
OwnerDonald G. Carsoninventor
Life of this patent
Estimating the term…
Abstract
Rotary drive apparatus includes a rotatable member secured to a pivoting arm and another rotatable member having an axis of rotation offset from the geometric center of the member to produce a non-linear rotation. Two embodiments are shown, one in which the driving member is pivoted and a second in which the driven member is pivoted.
Claims8
Non-linear rotary drive apparatus, comprising, in combination:
- first rotatable member means having a geometric center and an axis of rotation spaced apart from its geometric center for providing non linear rotational speed as the member means is rotated;
- second rotatable member means disposed adjacent to the first rotatable member means;
- cable means coupling the first and second rotatable member means together for joint rotary movement;
- and
- pivoting link means for compensating for the difference between the geometric center and the axis of rotation of the first rotatable member means connected to the second rotatable member means for pivoting the second rotatable member means to maintain the second rotatable member means adjacent to the first rotatable member means as the first rotatable member means rotates on its axis of rotation.
2 more elements
Non-linear rotary drive apparatus, comprising, in combination:
- first rotatable member means having a geometric center and an axis of rotation spaced apart from its geometric center for providing non linear rotational speed as the member means is rotated;
- second rotatable member means disposed adjacent to the first rotatable member means;
- cable means coupling the first and second rotatable member means together for joint rotary movement;
- and
- pivoting link means, for compensating for the difference between the geometric center and the axis of rotation of the first rotatable member means, connected to the first rotatable member means for pivoting the first rotatable member means to maintain the first rotatable member means adjacent to the second rotatable member means as the first rotatable member means rotates on its axis of rotation.
2 more elements
Dependencies are inferred from the claim text.