Patent ID: 7985165
Filing Date: 2011-07-26
Classification: A63B

Abstract:
1. An elliptical exercise machine comprising: a frame having a front end and a rear end, the front end of the frame having a vertical rod extending therefrom; a resistance mechanism disposed adjacent the front end of the frame and including a driving wheel and a resistance wheel driven by the driving wheel and providing a resistance thereto, the driving wheel having a crank respectively disposed on each of opposing sides thereof; two swing arms each having one end respectively pivotally connected to a corresponding side of the vertical rod, the two swing arms each having another end formed with a respective connection portion for swinging forwardly and backwardly with respect to the vertical rod; a pair of towing rods, each of the towing rods having one end thereof extending downwardly to be pivotally coupled to the frame; two stepping rods, each of the two stepping rods having one end pivotally coupled to the connection portion of a corresponding one of the two swinging arms, each of the two stepping rods have another end respectively pivotally coupled to a corresponding one of the towing rods; two transmission rods, each of the two transmission rods having one end respectively pivotally connected to a corresponding one of the two cranks, each of the transmission rods having another end respectively pivotally connected to a corresponding one of the two stepping rods, wherein while stepping on the two stepping rods, the two transmission rods are driven to drive the two cranks to rotate the driving wheel, the two stepping rods having relatively elliptical orbits formed through respective coupling to the two stepping rods driven by the two swing arms and the two transmission rods, responsive to the elliptical orbit of each of the stepping rods, the two towing rods perform a reciprocated towing motion within a towing angle that is smaller than 180 degrees, and when each of the two stepping rods are operated to a respective acme of the elliptical orbit thereof, the corresponding towing rod further tows the stepping rod to generate a quick return effect.