Imparting oscillating motion
AssigneeWataru Shimokawa
InventorSaburo Murakami
Life of this patent
Estimating the term…
Abstract
In apparatus for imparting a swinging motion to a driven shaft from a drive shaft through a pair of eccentric discs or crank pins mounted on the drive shaft and link mechanisms, the link mechanisms comprise a pair of flexible links. Each link has a loop at one end thereof which encircles the eccentric disc or crank pin. The other ends of the links are connected to the driven shaft such that the other ends are wrapped about the driven shaft in the opposite direction and over an angle larger than the swinging angle of the driven shaft.
Claims4
Apparatus, for imparting an oscillating motion to a driven shaft from a drive shaft rotating continuously in one direction, comprising:
- i. first and second cranks mounted on said drive shaft at 180.degree. opposed positions
- ii. first and second inextensible links each having a first end and a second end and a flexible portion, said first link being coupled at its first end to said first crank, said second link being coupled at its first end to said second crank
- iii. first and second winding bodies mounted on said driven shaft, the second end of the first link being secured to said first winding body and being wound round said first winding body in one direction about the axis of rotation of the driven shaft for a length greater than the throw of said first crank, the second end of the second link being secured to said second winding body and being wound round said second winding body in the opposite direction about the axis of rotation of the driven shaft for a length greater than the throw of said second crank
- iv. guide means disposed between said cranks and said wrapping bodies, said guide means having opposed spaced surfaces defining an opening in which said flexible portion of each link is positioned such that both links move through said opening.
Dependencies are inferred from the claim text.