Shaft coupling construction for a vibratory screed
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United States of America Patent
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-
Aug 21, 1990
Grant Date -
N/A
app pub date -
Mar 10, 1989
filing date -
Mar 10, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A shaft coupling construction for a vibratory screed. The screed includes at least two vibratory shafts which are disposed in end-to-end relation and an end of each shaft is secured within a bore in a sleeve or connecting member. Each shaft is mounted for eccentric motion to impart vibration to the screed. Each adjacent pair of connecting members are secured together by a flexible tubular coupling, and to transmit rotation between the shafts, the connecting members are provided with external splines which mate with internal splines on the tubular coupling. The spline connection is not symmetrical and is arranged so that the connecting members can be engaged with the tubular coupling only in one circumferential position, thereby insuring that the eccentricity of one shaft is circumferentially aligned with the eccentricity of the other shaft.
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Cited Art Landscape
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