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:
Oct. 09, 2001
Filed:
Jul. 26, 1999
Unbalanced prosthetic device for providing side-dependent twisting-rotational axial-loading coupling
Fu-Kuo Chang, Stanford, CA (US);
Hasan Yildiz, No. 19 G. O. P. Istanbul, TR;
Stuart B. Goodman, Los Altos, CA (US);
Other;
Abstract
The present invention discloses a side-dependent prosthetic device. The side-dependent prosthetic device is a composite prosthetic device with a longitudinal direction. The composite prosthetic device includes a plurality of plies wherein each ply being composed of a plurality of reinforced fibers aligned in a ply orientational angle &thgr;i relative to the longitudinal direction of the prosthetic device, where i=1,2,3, . . . ,N and N being the number of the plies. The plurality of plies are laminated together for forming the prosthetic device wherein the ply orientational angles being arranged such that &thgr;1+&thgr;2+&thgr;3+ . . . +&thgr;,−0 thus forming an unbalanced composite prosthetic device. In another preferred embodiment, the ply orientational angles &thgr;i forming a sequence which is represented by ((&thgr;,/&thgr;,),),where a first ply with orientational angle &thgr;,being followed by a second ply with orientational angle &thgr;,wherein such a sequence repeated n-times and arranged to be symmetrical to a mid-plane, wherein &thgr;,being an angle close to −10,and &thgr;,being an angle close to −20,.