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:
Dec. 27, 1983
Filed:
May. 29, 1981
Joachim Conseur, Berlin, DE;
Carl Hasse & Wrede GmbH, Berlin, DE;
Abstract
A torsional balancer device for a rotary shaft such as for a piston engine comprises a rotationally symmetrical member which is adapted to be connected to the rotary shaft to be balanced. A rotationally symmetrical seismic mass is rotatably mounted so as to be closely spaced from the rotational member and a viscous damping agent is within the small gaps between the seismic mass and the symmetrical member. A plurality, preferably an odd number, of curved, substantially closed spring elements have closely spaced ends which are connected respectively to the rotational member and the seismic mass. The spring elements define closed curves which may be circular or elliptical in shape. The rotationally symmetrical member may comprise a hermetically sealed annular housing and the seismic mass and damping agent may be enclosed within the housing.