Cam follower assembly for indexing conveyors
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Feb 4, 1986
Grant Date -
N/A
app pub date -
Oct 2, 1984
filing date -
Oct 2, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In an indexing conveyor that employs a helically grooved drive shaft to propel a shuttle carriage that is, in turn, coupled with a product-bearing dolly, the carriage is provided with a drive connection assembly comprising a pair of follower rollers that are received within the drive shaft groove. The rollers are carried by a swivel bar on opposite sides of its axis, which is perpendicular to the axis of rotation of the drive shaft. The assembly further includes a spring that biases the swivel bar in one direction so as to maintain the followers in engagement with the leading and trailing surfaces respectively of the shaft within the groove when the shaft is at rest or rotating at constant speed. Under rapid acceleration or deceleration of the drive shaft, pivotal movement in the opposite direction against the action of the spring causes both followers to engage the trailing surface during acceleration and the leading surface during deceleration. Impact loading in the drive connection is thereby eliminated and precise positioning of the product-bearing dolly is assured.
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