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:
Jul. 15, 1980
Filed:
Jul. 07, 1978
Applicant:
Inventors:
Hans-Henrik B Wallin, Smedjebacken, SE;
Eric R Ericsson, Ludvika, SE;
Assignee:
Morgardshammar Aktiebolag, Smedjebacken, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B07D / ;
U.S. Cl.
CPC ...
2093665 ; 74 61 ;
Abstract
A drive device for oscillating a spring-suspended device, such as a sieve or transport device, into an elliptical translational movement with a minimum of rotation. Two unequal and eccentrically arranged oscillation masses, rotatably fixed to the device, are rotationally driven each by a motor independent of the other. If the axes of rotation for the two masses are arranged in a certain geometry relative to the center of mass, the device will oscillate with a substantially pure translational, elliptical movement free of tipping movement.