This article presents the determination of relations for calculation of forces and reactions within links and kinematical joints of a double gear harmonic transmission with wave generator dephased with π/2, necessary in dimensioning and verifying calculations of the transmission links.

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The purpose of this paper is to observe the ergonomic advantages of different car seats and how the driver is constrained to them during the drive. The study was conducted by taking in to consideration the dynamical characteristics of a standard vehicle and subjecting the human body model provided by the AnyBody Modelling System, to inertia and centrifugal forces, in three different driving posture cases. The model proved to be viable and offered an image of different car seats advantages from ergonomic point of view.