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US 5,960,668 AGranted
Indexing mechanism using pairs of radially disposed rollers engaged between adjacent cam ribs
AssigneeNational Science Council
InventorsChing-Huan Tseng, Wei-Han Wang
Life of this patent
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Abstract
A roller gear cam index mechanism including a turret having pairs of adjacent rollers radially arranged on a circumference thereof. Each pair of rollers is engaged between adjacent ribs on a globoidal cam. The angle between the line up direction of every pair of rollers and the tangent direction of the turret circumference is a variable between 0 to 90 degrees. The rollers are modified globoidal rollers which are selected having difference maximum radii and vertex positions.
Claims8
An indexing mechanism, comprising:
- a rotatable cam;
- a plurality of ribs extending from said cam, two adjacent ribs defining a groove therebetween;
- a turret member;
- and
- a plurality of rollers spaced circumferentially about said turret member, said rollers being arranged on said turret member in roller pairs, each roller pair being circumferentially offset about said turret member from adjacent roller pairs, and said roller pairs and said groove being operationally dimensioned and arranged such that said roller pairs are received in said groove.
2 more elements
Dependencies are inferred from the claim text.