The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 21, 1990
Filed:
Mar. 10, 1989
Thomas G Artzberger, Menomonee Falls, WI (US);
M-B-W Inc., Slinger, WI (US);
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.