Road structure – process – or apparatus – Apparatus – Means to agitate material
Patent
1989-03-10
1990-08-21
Massie, Jerome W.
Road structure, process, or apparatus
Apparatus
Means to agitate material
404119, 425452, 403359, E01C 1938
Patent
active
049501011
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.
REFERENCES:
patent: 4030873 (1977-06-01), Morrison
patent: 4131375 (1978-12-01), Fischer
patent: 4213749 (1980-07-01), Morrison
patent: 4215869 (1980-08-01), Pendleton
patent: 4261694 (1981-04-01), Morrison
patent: 4340351 (1982-07-01), Owens
patent: 4427358 (1984-01-01), Stilwell
patent: 4577994 (1986-03-01), Miller
patent: 4758114 (1988-07-01), Artzberger
patent: 4832525 (1989-05-01), Morrison
M-B-W Inc.
Massie Jerome W.
Spahn Gay Ann
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