Patent ID: 8844961
Filing Date: 2014-09-30
Classification: A61G

Abstract:
1. A stand-up unit, comprising: (a) a first parallelogram comprising first, second, third, and fourth levers operably coupled to each other at first parallelogram pivot points, wherein the first lever comprises a first arm and the second lever comprises a second arm; (b) a second parallelogram comprising fifth and sixth levers and the first and second arms operably coupled to each other at second parallelogram pivot points, wherein one of the first parallelogram pivot points and one of the second parallelogram pivot points is a single common pivot point; (c) a support comprising a first support lever operably coupled to the common pivot point and a second support lever operably coupled to the second parallelogram; (d) a rod operably coupled at a first end to the first lever and at a second end to a backrest carrier; (e) a backrest operably coupled to the backrest carrier; and (f) a seat operably coupled to the third lever.