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US 4,135,409 AGranted
Device for converting rocking motion into reciprocating rotary motion
OwnerRakuichi Ishimaruinventor
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OwnerRakuichi Ishimaruinventor
Estimating the term…
A stepless speed change gear for bicycles and the like. A device is disclosed wherein a rotary input is converted to reciprocating motion by a rack and pinion, the rack is mounted at the end of a lever which is oscillated; an arm is mounted on the lever, connecting it to a rod which is driven in alternating rotary directions; the rod is connected to the output shaft by two ratchets driven in alternate directions by said rod, said ratches are geared to said output shaft in such a way that the output is a continuous rotary motion. The speed change mechanism being that said arm is slidably mounted on said lever and rod so that the nearer the arm is drawn to the end of the lever on which said rack is mounted the greater is the oscillating motion imparted and the greater is the subsequent angle through which the rod is rotated.
A device for converting a rocking motion into a reciprocating rotary motion comprising a rocking rod having one end thereof pivotally supported and the other end thereof rockably disposed, means to drive said rocking rod in a rocking motion, a sliding part provided on said rocking rod and freely movable longitudinally along said rod, a rotating shaft the longitudinal axis of which generally parallels the longitudinal axis of said rocking rod, and a rocker arm having one end thereof pivotally mounted on said sliding part and the other end thereof coupled to said rotating shaft and freely movable longitudinally along said rotating shaft, the rocking motion of said rocking rod being transmitted to said rotating shaft through said rocker arm so as to reciprocatedly rotate said rotating shaft with the amount of rotation of said rotating shaft produced by each rocking of said rocking rod being adjustable by shifting said sliding part along said rocking rod.
Dependencies are inferred from the claim text.