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:
Mar. 16, 2004
Filed:
Apr. 22, 2003
Sen-Jung Chen, Taipei City, TW;
Other;
Abstract
An artificial knee joint assembly includes a knee seat connected fixedly to a residual thigh, a support frame connected to the knee seat by means of a linkage unit, a prosthetic lower leg connected pivotally to a lower end of the support frame, a hydraulic cylinder unit disposed within the support frame so as to dampen the movement of the support frame relative to the knee seat, and a valve assembly disposed within the support frame. When the lower leg stands on a horizontal or inclined surface, the valve assembly is actuated by the lower leg to stop the operation of the hydraulic cylinder unit, thereby preventing rotation of the lower leg relative to the thigh.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile