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:
Feb. 19, 1985
Filed:
Jun. 07, 1982
Helmut Maass, West Bend, WI (US);
M-B-W Inc., Slinger, WI (US);
Abstract
A vibratory compactor having forward and reverse movement. The compactor comprises a bottom plate and a pair of standard, single shaft, vibration generating units are mounted in side-by-side relation on the bottom plate and each unit includes an eccentric shaft. The eccentric weight of one of the shafts can be varied in angular position with respect to the weight of the other shaft to provide both forward and reverse movement for the compactor. To adjust the angular position of one of the eccentric shafts, an axially slidable collar is splined to the eccentric shaft and a drive lug on the collar can be selectively engaged with a drive element on a drive gear or with a drive element on a ring which is fixed to the gear and spaced axially therefrom. The drive elements on the gear and the ring are displaced 180.degree.. By moving the collar axially through a manual control, the drive lug will be disengaged with the drive element on the gear and will be engaged with the drive element on the ring. During this adjustment, the gear will advance 180.degree. ahead of the eccentric shaft, thereby changing the angular position of the eccentric shaft with respect to the constantly rotating eccentric shaft to provide a reverse movement for the compactor.