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:
Feb. 15, 2022
Filed:
Nov. 26, 2019
Hugh Steeper Limited, Leeds, GB;
Ryan Wahl, Richmond, MI (US);
Aaron Taszreak, China, MI (US);
Hugh Steeper Limited, Leeds, GB;
Abstract
An adjustable counterbalance mechanism for a prosthetic elbow includes a torsional spring disposed in a housing structure coaxially to an axis of rotation of a forearm portion and a cord and pulley arrangement which includes a first pulley, a second pulley and a link member attached to a fixed member structure. The first pulley is attached to a second portion of the spring and connected to the second pulley by a first cord. The second pulley is pivotally attached to the housing structure and connected to the link member by a second cord. The cord and pulley arrangement is configured to transfer a moment of force due to spring force to the forearm portion to counteract the torque of a forearm due to gravity as the angle of the forearm portion changes relative to the upper arm portion.