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:
Apr. 16, 2002
Filed:
Jan. 27, 2000
Satoshi Kono, Kanagawa, JP;
Daisuke Shibata, Kanagawa, JP;
Unisia Jecs Corporation, Atsugi, JP;
Abstract
A torsional vibration damper assembly having stable torsional vibration damping characteristics is provided. The damper assembly comprises an input element, an output element, a damper hub operatively connected to the output element and having a plurality of circumferentially spaced, radial hub arms, a drive plate operatively connected to the input element and having a plurality of circumferentially spaced windows, a plurality of compression springs extending between circumferentially opposed edges of the windows and the hub arms, and a ring member rotatable relative to the input and output elements and surrounding the compression springs for restricting radially outward bending of the compression springs. Since the ring member is not urged against its surrounding constituent parts of the damper assembly when it is subjected to a centrifugal force of itself and a centrifugal force of the compression springs, the damper assembly can provide stable torsional vibration damping characteristics.