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:
Jun. 22, 1993
Filed:
Nov. 12, 1991
Andrzej Niklewski, Sao Paulo, BR;
Fabrica de Aco Paulista LTDA, Sorocaba, BR;
Abstract
An asymmetric mechanical vibrator with external adjustment for vibrating screens and other equipments having a bearing housing fixable to a sidewall P of the equipment and supporting through bearings a central portion of a shaft, which has an end portion, inside the equipment, carrying a balance eccentric counterweight with fixed axial positioning and predetermined axial extension and mass, the shaft having an end portion outside the equipment and carrying a main eccentric counterweight placed nearer the bearing housing than the balance counterweight and having axial dimension and mass greater than those of the balance counterweight, the axial positioning, axial dimension and mass of the main counterweight being selectively variable to generate determined eccentric forces on the vibrator and the same bending moment equal to that produced by the balance counterweight.